Posts Tagged ‘Toxins’

Safe and Green Cleaning

Saturday, December 12th, 2009

In one of my earlier blog posts I discussed the miracle cleaner electrolyzed water, but for now we will have to get by with other products.  Matt Metzgar has discussed using Green Works and Ecover products.  (Green Works – Matt Metzgar and Going Green – Matt Metzgar)  (Although, for a critical review of Green Works products you can read, “The Four Biggest Enviro-Scams:  Green claims that make us see red” By Amy Tennery, who recommends Seventh Generation products as superior. (But be sure to also read the rebuttal to this.))  Another such product line is EnviroRite’s.  And online, Greenhome.com sells a number of such products.

For those who want to go a step further, and live as safe and green as possible, you can make your own products.  I won’t try to reproduce the vast lists of specific formulas people recommend for doing home chores, but only try to hit a few of the highlights.  If you wish to pursue this, the links provided below should more than get you going.  (Also, for a whimsical perspective on replacing products with substitutes – which aren’t necessarily green – you can take a look at Joey Green’s Wacky’s Uses for Brand Name Products site.)

There are a few ingredients common to many of the recommendations people make. (From Non-Toxic Home Cleaning - Eartheasy): 

Baking Soda – cleans, deodorizes, softens water, scours.

Soap – will clean most things. (unscented, phosphate free, and doesn’t contain petroleum distillates) 

Lemon (juice) – a strong acid that is effective against most bacteria.

White Vinegar – cuts grease, removes mildew, odors, some stains and wax build-up.

Washing Soda – is sodium carbonate decahydrate.  It will cut grease, remove stains, soften water, clean walls, tiles, sinks and tubs.  Do not use on aluminum.

Ethanol Alcohol – is an excellent disinfectant.

Corn Starch – can be used to clean windows, polish furniture, and shampoo carpets and rugs.

Hydrogen Peroxide - used as a disinfectant.    

You can find suggestions for just about every conceivable purpose: air fresheners and deodorizers, fabric softeners, furniture polish, stain removers, pesticides (ants, fleas, flies, mice, mites, mosquitoes, moths, roaches, wasps, etc. ), windshield washer fluid, shoe polish, rust removers, disinfectants, cleaners for glass, your hands, the oven, vinyl, wood, drains, mildew, toilets, paintbrushes, floors, tub and tile, aluminum, copper, brass, silver, porcelain, etc.   

On a related issue, there are sites online that focus on cosmetics safety.  The Campaign for Safe Cosmetics.  Here is an article that discusses this issue: Safe Cosmetics by Christina Hartje-Dunn,  

Here is a somewhat random selection of books on safe and green cleaning:  Clean Your House Safely and Effectively without Harmful Chemicals by Randy Dunford, Green Clean: The Environmentally Sound Guide to Cleaning Your Home (Paperback) by Linda Mason Hunter, Green Clean by Linda Mason Hunter, Better Basics for the Home: Simple Solutions for Less Toxic Living (Paperback) by Annie Berthold-Bond, and Easy Green Living: The Ultimate Guide to Simple, Eco-Friendly Choices for You and Your Home (Paperback) by Renee Loux.

Here are a number of online articles dealing with green living and safe cleaning:  Safer Alternatives To Common Household Products - Barlow Scientific, Hazardous products and healthy alternatives – King County, A Consumer Guide To Safer Alternatives To Hazardous Household Products, Part 2; The only 18 things you need for a clean house by Valerie Rains, Shine staffCleaning the House Safely by Elizabeth Hughes, Alternative Cleaners - Howare County Recycling DistrictNatural Insect Pest Control – Eartheasy, Non-Toxic Home Cleaning – Eartheasy, Alternative Cleaning Recipes – Ecology Center,  Non-Toxic Household Cleaners by Kendra Cecil, Less Toxic Alternatives – Clean Community SystemHazardous Household Substances: Alternatives That Are Relatively Free of Toxic Effects by Marie HammerTips on finding the safest household products – King County, Safer Alternatives to Hazardous Household Products – State of Nevada Bureau of Water Pollution Control, Home and Garden Tips – Natural Resources Conservation Service: U.S. Department of AgricultureSafe Alternatives to Household Hazardous Products – Sierra Club of Canada, Safe Alternatives to Hazardous Household Products – King County Kid’s Page, Household Hazardous Products - Univ. of Missouri ExtensionGreen-Clean Your Home By Amy Roffman New, From Natural Health, September/October, 1994; and How to Make a Non-Toxic Cleaning Kit by Annie B. Bond,   

 

Lead Poisoning

Friday, December 11th, 2009

Lead has no known function in the human body.  It’s an insidious toxin with a very broad range of symptoms, and even people who appear healthy can have dangerous levels of it in their blood.  The problem of lead contamination is entirely a result of civilization, since levels in pre-industrial people (in the range of 0.01 micrograms/deciliter (mcg/dl)) were around 100 to 1,000 times lower than blood levels typically found in people today.  (Lead Toxicity, A Review of the Literature. Part I: Exposure, Evaluation, and Treatment Lyn Patrick, ND)  

One of the major players in this disaster was the Ethyl Corporation.  In its pursuit of profits it criminally exposed workers to lead in its factories, and lied about it while they were dying.  Its lead-based-no-nock-gasoline-additive eventually put about seven million tons of lead out through the tailpipes of cars into the atmosphere. (1) (The Ethyl-Poisoned Earth by Alan Bellows)

The main cause of lead’s toxicity is its ability to interfere with many enzymes by binding to their sulfhydryl groups.  Short term measurable effects of lead poisoning begin at 25 mcg/dl.  Obvious symptoms begin to occur at levels above 40mcg/dl in adults, and above 60 mcg/dl in children. 

The list of potential health problems related to lead is a very long one:  Lead can damage hearing, vision, muscle coordination, the blood, kidneys, heart, and reproductive system.  Symptoms can include abdominal pain, anemia, loss of appetite, constipation, delayed growth, depression, diarrhea, fatigue, headaches, irritability, decreased libido, memory loss, muscle pain, nausea, personality changes, problems with sleep, an unusual taste in the mouth, weakness, tingling in the extremities, vomiting, and weight loss.  In one recent study those people with blood lead levels in the top 20% (over 2.11 mcg/dl) of the subjects had 2.3 times the odds of suffering from a major depressive disorder, and almost 5 times to odds of having a panic disorder as those in the lowest 20% (under 0.7 mcg/dl).  (The average blood lead level of the group was 1.61 mcg/dl.)  (Young Adults’ Blood Lead Levels Linked to Depression, Panic Disorder)

Exposure to even low levels might cause irreversible learning difficulties and mental retardation in children.  One study found that the IQ scores of children dropped about 7 points across the sample as children’s blood lead levels varied from 1 mcg/dl to 10 mcg/dl. (2) (Very Low Lead Levels Linked With IQ Deficits)  

The current consensus is that there is no safe level of lead exposure.  Lead accumulates in the blood, soft tissues and bone; and its half-life is weeks in blood, months in soft tissues, and years in bone. 

In the past lead was used commonly in house paint, as an additive to gasoline, and as a pesticide.  One piece of good news in all this is that the Clean Air Act has helped reduce air emissions of lead nearly 90 percent during the last 20 years.

If you have a problem with lead contamination there are a number of things you can do to deal with it: 

Make sure your child’s blood is tested for lead before age 2, and regularly to age 6, if there is the possibility of lead in the child’s environment.  The major treatments are removal of the source of lead and possibly chelation therapy (administration of agents that bind lead so it can be excreted). (Chelation therapy – Wikipedia)

Around the home anything that has paint or a finish made before 1978 in the U.S. could be a source of lead.  (It was banned in France and many other countries before 1920.)  So you shouldn’t use cribs, bassinets, highchairs, painted toys, or toy chests made before that date.  Lead paint is still sometimes found in toys and toy jewelry made today, so you should keep up on toy recalls by checking the lead recall lists. (Toy Hazard Recalls – CPSC)  Unfortunately, 75% of the nation’s housing has lead paint.  Broken down by time period, 90% of pre-1940 buildings have it, 80% of pre-1960 ones have it, and 62% of pre-1978 buildings have it. 

Keep children away from paint chips (which they might eat) by closing and locking doors.  You should create barriers between living and play areas, and the sources of lead.  Apply temporary barriers such as contact paper or duct tape to cover lead sources. 

Lead contaminated dust can be created by the friction of opening windows and doors, it might be blown in - coming from distant contaminated soils, or it can be generated during home renovation on a pre-1978 house.  Lead dust is invisible and will pass through most masks and filters, so, if you have to sand or strip old paint that may contain lead, be sure to use a high quality mask to prevent inhalation of lead particles.  Regularly wash children’s hands, pacifiers, toys, and any other items that might go in the mouth.  Feed children nutritious low-fat meals high in calcium and iron, since this will reduce the amount of lead absorbed into the body.  Wet-mop and wipe floors, window components, and other horizontal surfaces (counters, tables or floors) frequently.  If possible, windows should be kept shut to prevent abrasion of painted surfaces, or only opened from the top sash.  Don’t vacuum with a regular vacuum because it just lets lead dust fly around, but instead use a vacuum cleaner that utilizes a HEPA (High-Efficiency Particulate Air) filter.  Pregnant women and children shouldn’t be present during a pre-1978 house renovation. 

Lead was often in exterior oil-based paint prior to 1950, and as it ages it often contaminates soil about a house where children play.  Stop children from playing in bare soil and close to the sides of the house.  Instead, provide them with a sandbox more than 3 feet away from it.  (If your do have a sandbox, parents should cover the box when it’s not in use to prevent cats from using it as a litter box.)  Plant grass on areas of bare soil, or cover the soil with mulch or wood chips.  Take off your shoes when you go inside, and, if you walk barefoot outside, wash your feet when you go indoors.   Also, give your pet’s feet, legs, and undersides a rubdown with a towel after taking them outdoors. 

Lead solder can contaminate house pipes, so, unless you know your pipes are uncontaminated, you should only use cold water from the tap for drinking or cooking.  Also, if water sits in a pipe for several hours flush it from the tap for two minutes before drinking.  You can also use a water filter to reduce the lead in the water you cook and drink with.  For example, a simple Brita water filter will remove around 9o% of the lead found in tap water.  

Replace inexpensive, horizontal, plastic blinds that have been made in Asia or Mexico, since these types of blinds often contain lead.  Pregnant women and children should not be exposed to burning candles that could contain lead in their wicks.  Don’t drink out of crystal glass.  Soft vinyl lunch boxes can have dangerous levels of lead.  Avoid using any personal care products that contain significant amounts of lead. 

Hobbies that often involve working with lead are making stained glass windows, working with pewter and other collectible figurines, the glazing and firing of pottery and ceramics, making lead weights, reloading and making ammunition, making lead shot, target practice, making lead fishing weights or lures, refinishing furniture, and remolding.  You should never sand, burn, or scrape paint unless you either know it doesn’t contain lead, or take the proper precautions.  You should shower and change clothes after finishing a task that involves working with lead-based products.

Sites where lead might be a problem are hazardous waste sites, an area where cars are abandoned or repaired, ballast on a ship, a heavily traveled major highway or roadway, and an older house with peeling exterior paint.  Also artificial turf playing fields have recently been found to produce a potentially hazardous amount of lead dust.

Other sources of lead are kohl (a South Asian cosmetic), sindoor (a cosmetic used by traditional Hindu and Sikh married women), herbal remedies (Ayurvedic preparations (Ghasard, Bala Goli, and Kandu), surma, and those of Chinese origin), and folk remedies (azarcon (also called Maria Luisa, Liga, Alarzon, Alkohl, Greta, Coral and Rueda), farouk, bint al zahab, and pay-loo-ah).  Additional sources are solder which was used in the past to seal cans of food, ceramic glazes, lead curtain weights, lead bullets from hunted animals, bullets lodged in a person’s joints (since they deteriorate over time), imported candies that contain tamarind or chili, contaminated pottery, containers, cookware, or tableware.  Older Christmas tree ornaments might be decorated with lead paint, and lead is in some tree light wires.  Old newspapers, paper bags, magazines, and comic books could have been made with lead based inks.  You should never burn treated lumber, since there will be heavy metals in the smoke.  Industrial facilities, urban runoff, and atmospheric deposition are all sources of lead in the aquatic environment.  Even your keys can often contain small amounts of lead.

Types of work that is typically associated with the risk of lead contamination include house construction and repair, shipbuilding, painting (especially marine related painting), iron processing, brass or copper foundry valve and pipe fitting, bronze work, welding, resurfacing, bridge, tunnel, and elevated highway construction; the demolition of bridges, towers, and other steel structures; lead battery manufacturing and recycling, radiator manufacturing and repair, scrap metal recycling, the electronics industry, the manufacture of some plastics, automotive repair, fishing weight production, leaded glass manufacturing, lead ore production, milling, and smelting; and municipal solid waste incinerators. 

If your workplace poses a risk of lead contamination there are a number of safety precautions you should take:  You should work with your employer to reduce lead and lead exposure in the workplace, perhaps by providing special ventilation equipment and/or fitted respirators.  Wash your hands and face before eating, drinking, or smoking.  Eat, drink, and smoke only in areas free of lead dust and fumes.  Wet clean and HEPA vacuum lead-contaminated dust.  Use separate work clothes and shoes while at work, and keep your street clothes in a clean place.  Shower at work before going home, and launder your work clothes at work.  If you take your work clothes home, wash and dry them separately.

For more information there are a number of sources you can contact.  Here are some numbers: 

EPA’s Safe Drinking Water Hotline 1-800-426-4791.  

National Lead Information Center 1-800-LEAD-FYI, or 1-800-424-LEAD (5323). 

Lead Surveillance and Reporting, Office of Epidemiology, 1-360-236-4252. 

For information about lead in the workplace call the Department of Labor and Industries, 1-360-902-5663. 

For a list of qualified testing laboratories for analysis of lead in paint, soil, or dust call 1-800-424-LEAD. Please specify that you are requesting the NLLAP/ELPAT list of laboratories.  

HUD’s Lead Reduction Office, see: http://www.hud.gov/lea/leahome

For a home test, see: http://leadtestkit.com/kits1.html

You can also talk to your state or local health department about testing paint and dust from your home for lead.

To permanently remove lead hazards, you have to hire a lead “abatement” contractor.  Call your local paint stores to find out if the contractor you’re considering has a good history with the store.  Find a contractor who has been in business for several years, and can offer references. The longer they’ve been in business, the more they will likely know about lead.  Find a contractor with whom you feel comfortable, and who can answer your questions and explain their work.   

(1) Only one of the many consequences of this might have been a nationwide crime wave.  A number of recent studies have shown a strong correlation between atmospheric lead levels and crime rates.  The sharp decline in US crime rates, which began in the early 1990s, correlates perfectly with the reduction of leaded gasoline in the early 1970s.  Other countries have seen similar declines, also delayed by twenty years. (The Ethyl-Poisoned Earth by Alan Bellows)

(2)  Throughout this entire discussion there exists the common problem of inferring causation from correlation.  Since direct experiments with humans would be unethical, many results require an assumption that lead is actually the cause of a health problem.  At higher levels of contamination this assumption is unproblematic, but at lower levels this can be a source of uncertainty.  Looking at the national lead standards for blood toxicity through the years, in the space of about 50 years, they have changed six-fold from 60 mcg/dl to 10mcg/dl.  One reason to be skeptical of a 7 point IQ drop because of such low lead levels is that this suggests that people who grew up in the 1950’s and 1960’s would have had greatly reduced IQ’s, and this doesn’t seem to have been the case. 

In 1960, 60 mcg/dl
In 1970, 40 mcg/dl
In 1975, 35 mcg/dl
In 1985, 25 mcg/dl
In 1991, 10 mcg/dl

It is certainly possible that raising a child’s blood lead level from 1 mcg/dl to 10 mcg/dl directly causes an average 7 point drop in IQ.  The problem here is that there are potentially hundreds of confounding variables that could be creating the observed correlation.  It’s possible that children with lower IQ’s have a greater tendency to chew on paint chips, be less well-nourished, or attend poorer schools.  Also, parents with lower IQ’s might have a greater likelihood of living in lower quality housing and in more contaminated neighborhoods, be less aware of the dangers of lead poisoning, or be less competent when taking precautions, etc.  So, the connection between lead at low levels and IQ could be one of children inheriting genes from relatively lower IQ parents, which predispose them to also have lower IQ’s.  

In short, while it is entirely reasonable to take no unnecessary chances with lead poisoning (personally I would prefer my blood level to be literally zero), it’s only careful to remember that researchers haven’t actually established an airtight connection between the low blood lead levels and the observed health effects they are currently concerned about.  (From: Toxic Lead Levels by Valerie)

(Lead – CDC) (Lead – Prevention Tips – CDC) (Lead – Sources of Lead – CDC)  (Lead Poisoning Fact Sheet) (The Basics about Lead Paint – Home Safe Environment) (Lead Poisoning – Wikipedia) (How to Lower The Risk of Your Child Getting Lead Poisoning – eHow) (Simple ways to help prevent childhood lead poisoning - iVillage) (Helping Parents Prevent Lead Poisoning. ERIC Digest. by Binns, Helen J. – Ricks, Omar Benton) (Lead Poisoning: Prevention – MayoClinic) (Ways To Prevent Lead Poisoning by Dr. Ben Kim) (How to Prevent Lead Poisoning) (Prevention of Lead Poisoning – Cure Research) (Campaign for Lead Safety Awareness – Angie’s List) (Lead Poisoning Prevention – KeepKidsHealthy)

Preventing Home Poisonings

Tuesday, December 8th, 2009

In an earlier post I blogged about carbon monoxide (CO) poisoning.  (Carbon Monoxide – Lost Wanderer)   But, there are obviously many other ways you can poison yourself: 

According to the CDC, poisonings killed 32,691 people in the United States in 2005.  About 72% of these were unintentional (23,618), 10% undetermined (3,240), 18% suicides (5,744), and 0.3% homicides (89).  To understand where the bulk of this risk is coming from it’s important to know that 95% of the unintentional poisoning related deaths were caused by drugs.  The most common drugs involved, in descending order, were opioid pain medications, cocaine, and heroin.  Benzodiazepines, sedatives, hypnotics, and antidepressants were also commonly involved.  (Poisoning in the United States: Fact Sheet – CDC)   

If we look at poisonings of children under age 6, in 2001, drugs accounted for 42% of poisonings, and non-drugs accounted for 58% of the total.  90% of these events occurred at home.  (Pediatric Poisoning by John P. Lamb)

Drug poisonings in this age group involved analgesics (19%), topicals (19%), cold/cough (15%), vitamins (10%), antimicrobials (8%), GI preps (9%), hormones (7%), antihistamines (7%), minerals/Lytes (3%), and antidepressants (3%).  Among analgesics the percentages were ibuprofen (40%), acetaminophen (31%), others (11%), combination (10%), aspirin (5%), and opiates (3%).  

Non-drug poisonings in children under 6 involved cosmetics (26%), cleaners (22%), foreign bodies (15%), plants (13%), pens/inks (6%), pesticides (5%), hydrocarbons (4%), foods (3%), rodenticides (3%), and alcohols (3%).  The pesticides involved were insecticides (51%), rodenticides (22%), repellents (14%), herbicides (10%), fungicides (2%), and fumigants (1%).  Insecticide exposures in 2002 were from the following sources: Pyrethrin (37%), organophosphate (22%), others (16%), borates (8%), unknown (8%), Carbamate (6%), combinations (5%), Chlorinated HC (3%), Arsenic (1%), and Metaldehyde (0%).  Herbicide exposure in 2002 was 14,021, and was from the following sources: other (43%), Glyphosate (32%), Chlorophenoxy (15%).  

The effects of pesticide exposure broke down in the following way: no effect 21,844 (55%), minor effect 14,563 (37%), moderate effect 2,661 (7%), major effect 274 (0.7%), death 18 (0.05%). 

The routes of exposure were oral (76%), dermal (8%), inhalation (6%), ocular (5%), bite/sting (4%), and other (1%). 

The common characteristics across poisoning situations for children were availability, attractiveness, and taste.  This isn’t surprising since 47% of households with children under 5 living in them had pesticides stored in an unlocked cabinet less than 4 feet high.  75% of households without children under 5 also had pesticides stored unsafely, which might not seem to be much of a problem, except for the fact that 13% of pesticide poisonings occurred in a home other than the child’s own. 

Hazardous substances fall into a number of categories: Reactive ones are unstable and produce dangerous byproducts.  Corrosives are acidic or alkaline, and will eat away at substances.  Ignitables can catch fire.  Toxic substances are by definition poisons.

In your garage or shed you might have antifreeze (which tastes sweet to dogs and cats), other automotive fluids, cleaning fluids, hand cleaner, car soaps, rust remover, lamp oil, polish and wax, fertilizer, weed killer, gasoline and kerosene, lighter fluid, lime or lye, mothballs, paint, paint thinner and stripper (paint strippers are among the most dangerous products in your home), pesticides (such as rat and other rodent poisons), insecticides (such as roach sprays and ant baits), insect repellents,  turpentine, pool chemicals, charcoal lighter, windshield washer fluid, and anti-freeze .  

In your kitchen you might have ammonia, bug sprays and traps, floor wax, cleansers (including floor, carpet, oven cleaner, and window), disinfectants, drain openers, medicines (both prescription and over-the-counter), glues, polish (for furniture, metals or glass), soaps and detergents.  (Note: You should be very careful about mixing cleaning products.  For instance, if you mix bleach with toilet bowl cleaners (or ammonia) this combination will form very deadly chlorine gas.)

In your bedroom you might have cosmetics, perfumes, colognes, cough medicine, prescription drugs, and sleeping aids. 

In your bathroom you might have aftershave lotion, baby oil, toothpaste, alcohol, hydrogen peroxide, bath oil, cleansers (including floor, window, toilet bowl, and tub/tile cleaners), disinfectants, deodorizers and sanitizers, products used to kill mold or mildew, drain openers, hair removers, hair colors and perm solutions, nail products, personal hygiene products, mouthwash, ointments, flea and tick shampoos, powders and dips for pets, and shampoo. 

In your laundry room you might have laundry detergents, softeners, bleach, cleaning fluids, soaps, stain removers, and spray starch.

One special case is that of your art supplies.  Lead glazes can cause lead poisoning.  Rubber cements can cause nerve damage.  Acrylic paints can contain formaldehyde.  Oil paints, or anything that requires solvents, can be toxic.  Darkroom chemicals can be hazardous.  Dust from sanding can trigger allergic reactions.  Copper salt dust can be toxic.  Turpentine can strip oil off skin, making it vulnerable.  “Zinc shakes” and “bronze fever” have occurred. 

Often the dose does make the poison, so be aware of the extent of your exposure and try to space it out.  Temperature can also make a difference, since in warm temperatures liquids evaporate more quickly.   (Using Art Materials Safely) (Art and Hobby Materials) (Health Hazards Manual for Artists by Michael McCann) 

For children you should make sure everything is labeled non-toxic.   Safe materials for children include crayons, colored pencils, water colors, finger paints, many modeling materials, some inks, and some glues.  (ACTS : Arts, Crafts & Theatre Safety) (Kids Art)       

Other hazards you might have in your home are alcoholic beverages, vitamins, supplements, diet pills, hair sprays, colognes, nail polish and remover, furniture polish, cigarettes, nicotine patches, folk remedies and herbal preparations, ammunition, and batteries (including button cell batteries like those in watches). 

One basic way of minimizing the danger from hazardous substances, etc. is by limiting your use of them and educating yourself about safer alternatives.  Most household cleaners can be replaced by five things: plain soap, borax, baking soda, vinegar, and ammonia.  Instead of cough medicine you can mix honey and lemon juice with hot water.  Instead of iodine you can use soap and water.  (Home Safe Home by Deborah Lynn Dadd, Nontoxic, Natural & Earthwise by Deborah Lynn Dadd, and Green SealThe general rule is to use the least powerful chemical necessary to do the job.  The warnings run from “DANGER, DANGER – POISON,” to “WARNING,” to “CAUTION.”  Get the product designed to address your specific problem, and, unless you are an expert, only buy pesticides labeled for general use. 

For the dangerous things that you do decide to keep in your house (the following advice includes medicines) store all hazardous substances separately in a locked and high cabinet protected from heat and cold.  Return a container to the cabinet immediately after removing the amount needed.  (You need to consider how best to secure your cosmetics, given the number of poisonings they cause.)  For a second layer of defense put child safety caps on all of the containers you can.  But don’t rely on packaging to protect your kids, since child-resistant packaging does not mean childproof packaging. Keep children and pets away from a work area, and remove toys.  Obviously, a woman who is pregnant should stay away when hazardous chemicals are being used.   

Always keep dangerous substances in their original containers, since their labels provide valuable information in the event of an accident, and substituting other containers invites deadly confusion. (You should apply transparent tape over the labels to keep them legible.)  You should read these labels (and any relevant safety data sheets that are available) and know the details about what you have. (1)  Follow their advice regarding the recommended safety precautions and product restrictions, and contact the manufacturer if you have any questions.  For example, use neoprene gloves, eye goggles, long sleeves, long pants, socks, shoes, proper cross-ventilation, and masks if the label says to. 

Make sure your equipment is in good working condition.  Open containers carefully with a rag around the cap.  Proper ventilation requires by definition a large turnover of air.  Turn on a fan (unless a substance is highly flammable) and open several windows when using chemical products such as household cleaners.  Don’t use power tools with flammable materials.  Mix insect sprays outdoors away from areas used by people and pets, and stay upwind.  Basements can allow fumes to collect near the floor.  Don’t spray when it’s windy.  Follow the waiting times before allowing anyone into the area treated.  You should never keep gasoline in your home, but if you do use a specifically designed container for gasoline.  Some paint strippers will produce toxic gas if used in direct sunlight.  Only use the amount of product recommended for the application, clean up any spills as soon as they happen, and wash off thoroughly after any contact with a hazardous substance.  Don’t apply a pesticide more often than recommended.  Be sure you know how close to harvest you can apply a product.  If you are working with poisons don’t wear leather belts or shoes.  Don’t smoke, drink, or eat when handling these materials.  Re-close containers if interrupted (e.g. phone call or doorbell) during an application or dosing.  Remember that most poisonings happen when a product is in use.  Often something is going on which distracts people, such as someone is sick, there has been a death in the family, or it is mealtime. 

Wash all sprayed fruits and vegetables.  One method is to put them in vinegar and water for a few minutes, and rinse again with water.  You should wash your clothes three times separately after exposure to strong pesticides.  Triple rinse tools, equipment, or empty containers.  Puncture empty containers so they can’t be reused, and dispose of them according to directions. 

Only buy and mix what you need, then use it up.  In other words, don’t buy in bulk.  If you store hazardous substances for long periods of time they can react with their containers, which can then leak.  Another problem is that their labels can become worn. 

You should properly dispose of expired materials.  Do not burn them.  Also, don’t  burn or reuse their containers.  Don’t burn plywood or lumber that has been treated with preservatives, the resulting fumes can be thick with heavy metals. 

Your local public health or hazardous-waste organization is often the best place to find information about how to dispose of a product.  Some things such are motor oil, or batteries, can be recycled.  Hazardous waste often needs to be put into special landfills. 

You need to know the names of your medications and supplements, both prescription and over-the-counter.  When you take or give medicine put your glasses on, turn on the lights, and read the label every time.  Always check for the proper dose, and be sure you are giving the right medication to the right person.  Never take another person’s medicine.  Take medicine at the correct time of day, and keep track of when you took it by writing it down if necessary.  Know and don’t confuse the abbreviations for tablespoon (Tbsp) and teaspoon (tsp).   Avoid making conversions.  If the label says two teaspoons, and you’re using a dosing cup with ounces only, get another measuring device.  If the medicine came with a measuring device use only that device.  Know how much medication you have, so you can tell if any is missing by regularly doing a count, and keeping a line marked on bottles.  

Never guess on the amount of medicine that should be given to someone.  For example, kids aren’t just small adults; half an adult amount may be more than your child needs, or not enough to help.  Always follow the age limit recommendations.  Twice the dose obviously isn’t appropriate just because your child seems twice as sick as last time. 

It can be confusing when there are multiple caregivers giving medications to someone.  Be sure to communicate to each other every dose you give, and also write down each dose given in a log.

Medications can interact with each other.  If someone is already taking one medicine, check with your doctor before adding any other meds to be sure they are compatible.  If multiple doctors are prescribing a variety of medications, be sure to communicate with each doctor and your pharmacist so they can check for drug interactions.  Some medicines will interact with certain foods, some need to be taken with food, some without. 

Never leave vitamin bottles, aspirin bottles, or other medications on kitchen tables, countertops, bedside tables, or dresser tops.  Children will imitate you, so ideally take your medicines where children can’t watch, and never call medicine candy.  Teach children to ask before eating or drinking anything.  Talk about prescription drugs, and stress that they are only safe for the person who receives the prescription from the doctor.  (For advice on how to talk to your child/teen go to www.drugfree.org)  Something as seemingly harmless as pain-relieving skin creams will often contain benzocaine, dibucaine or lidocaine.  A child who swallows just a small amount of these can have seizures and might even die.

Throw away expired medications in the garbage.  Don’t put them down the sink or toilet because they can contaminate the water supply.  For privacy sake remove the labels.  Keep children and pets away from the garbage.  Crush old pills and mix them with sand, coffee grounds, or kitty litter.  Place them inside a container such as an empty yogurt or margarine tub and tape it shut.  Your health department might know of a place to take old medicines.  (Poison Prevention Tips)

At Christmas time don’t put presents like perfumes and after-shaves under the tree, but put them out of the reach of children.  Clean up immediately after parties, so alcohol or cigarettes won’t be a temptation for children.  

Mothballs should be hung in containers. If they are used in closets or chests, they should be put out of children’s reach.  Bait traps should be tamper-resistant.  Store bottles of alcohol in a locked cabinet far from kids’ reach, and remember that food extracts, such as vanilla and almond, may contain alcohol that can be harmful to kids. 

When you have party guests designate a locked room where relatives and guests can place their coats and purses that may contain medications.  Ingesting as few as six cigarette butts can send a child to the hospital, so you should empty ash trays often.  Remove and empty partially filled glasses of alcoholic beverages.  Be aware of any legal or illegal drugs that guests may bring into your home. Do not let guests leave drugs where children can find them, for example, in a pillbox, purse, backpack, or coat pocket.  Be aware of all medications in your home (and in the homes of your relatives if your kids spend time there).

If relatives come to stay through the holidays, be sure their medications are put away.  Lock medicines in a suitcase or, if in a purse, place it out of reach.  Buy plastic plants with fake berries, not the real ones.

You should have the national poison hotline by each phone, the number is 1-800-222-1222.    They will want to know the condition, weight, and age of the person.  Have they been sick, and if so, what medications have they been on?  Do they have any allergies?  Also, have a poison first-aid chart at hand.  (Poison First Aid) (Poison First Aid) (Emergency First-Aid Chart

Here is some general advice for specific situations:  Has the person collapsed or stopped breathing? Call 911 or your local emergency number right away.  Do you have poison in the eyes?  Then rinse your eyes with warm running water for 15 to 20 minutes.  What about poison on your skin?  You should take off any clothing that the poison touched, and rinse your skin with running water for 15 to 20 minutes.  Have you Inhaled poison?  You should get to fresh air right away.  Did you swallow the wrong medicine or too much medicine?  Then don’t take anything by mouth.  Have you swallowed something that’s not food or medicine?  You should then drink a small amount of milk or water.  You should also keep a supply of ipecac syrup on hand (to induce vomiting if necessary). 

Plants:

Identify all the plants in your home and yard by taking them into a nursery, greenhouse, or florist.  Label the pots, and make a map of the yard.  Don’t assume a plant is safe because birds or wildlife eat it.  Remember that even a safe plant can be a choking hazard.  You can try to remove material from a child’s mouth with a damp washcloth wrapped around your finger.  Store seeds, bulbs, and plant food out of the reach of children.  Seeds and bulbs might be coated with fungicides and insecticides. (Poisoncenter Brochure)

Teach children to not eat wild plants or mushrooms.  It’s easy to confuse safe and unsafe ones.  Unless you are an expert, you cannot tell poisonous mushrooms from safe mushrooms.  Mushrooms that are called “death caps” (Amanita phalloides, Amanita verna) grow easily in yards and parks. Eating even a few bites can cause fatal liver damage. Mushrooms will often sprout up after a rain.  Inspect your yard and remove them.  If you do decide to go mushroom hunting get a good guide and read up. (Mushrooms Demystified by David Arora, The Mushroom Hunter’s Field Guide by Alexander Smith, and Mushrooms of North America by Orson K. Miller)   You should note the environment, shape, color, odor, terrain, whether it is growing in a cluster or alone.  Since many mushrooms are very similar, all of the characteristics must match for you to know what you have.  Check for a fetid odor, signs of decomposition, or worm infestation.  Try only a few at first, and set a few aside in case you are poisoned. 

Dividing plants into safe and unsafe ones is a crude method of categorizing them.  So, the list below is only a very rough guide, and, of course, it is far from complete.  Ideally you should identify each plant you are likely to be exposed to by its scientific name, and know the degree and nature of its toxicity. 

Safe Plants:

Houseplants: African Violet, Air Fern, Aluminum Plant, Asparagus Fern, Baby Tears, Beauty Bush, Begonia, Common Blood leaf, Boston Fern, Bridal Veil, Bromeliad, Christmas Cactus, Coleus Blumei, False Aralia, Gloxinia, Hoya, Hibiscus, Inch Plant, Jade, Kalanchoe, Lipstick Plant, Norfolk Pine, Palm – Big Leaf, Peperomia, Piggyback Plant, Poinsettias are not that harmful, Prayer Plant, Snake Plant, Spider Plant, Spider Aralia, Swedish Ivy, Umbrella Plant, Wandering Jew, Yucca, Zebra Plant, and Zinnia.  Garden: Aster, Baby’s Breath, Coral Bell, Crocus - Spring, Dahlia, Fuschia, Golden Sedum, Impatiens, Lily (Easter, Tiger), Nasturtium, Petunia, and Snapdragon.  Field Plants: Dandelion.  Trees:  Mountain Ash and Mulberry.  Ornamentals: Autumn Olive, Forsythia, Lilac, and Pussywillow. Miscellaneous: Christmas tree preservatives are usually not toxic, but check the label, and Nandia berries.

Unsafe Plants (It’s probably best to simply not have these in the house.):

Houseplants:  Amaryllis, Bird of Paradise, Burro Tail, Caladium, Crown of Thorns, Dumbcane, Elephant’s Ear, Gardenia, Jerusalem Cherry, Mother In Law’s Tongue, Philodendron, Pothos, and Purple Passion.  Garden Plants:  Aconite, Bleeding Heart, Bloodroot, Christmas Rose, Crocus - Autumn, Daffodil, Daisy, Delphinium, Dutchman’s Breeches, Eucalyptus, Four O’clock, Foxglove, Gladiola, Heather, Hellebore, Hyacinth, Iris, Jimsonweed, Jonquil, Larkspur, Lily of the Valley, Lobelia, Lupine, Monk’s Hood, Morning glory, Narcissus, Nicotiana, Star of Bethlehem, Sweet Pea, and Wolfsbane.  Field Plants: Angel’s Trumpet, Baneberry, Bittersweet, Buttercup, Dogbane, Goldenrod, Nightshade, English Ivy, Poison Ivy, Poison Oak, Poison Sumac, Pokeweed, Queen Anne’s Lace, Snow on the Mountain, Spurge, and Virginia Creeper.  Trees: Black Locust, Buckeye, Chinaberry Tree, Elderberry, Dogwood, Jatropha, Oak, and Wild Black Cherry.  Ornamentals: Atropa Belladonna, Azalea, Carolina Jessamine, Cotoneaster, Daphne, Golden Chain, Heath Family, Holly, Hydrangea, Jessamine, Juniper, Lantana, Mistletoe, Mountain Laurel, Oleander, Privet, Rhododendron, Wisteria, and Yew.  Woods: Baneberry, Death Camas, Jack in the Pulpit, and May Apple.  Swamps: Cowbane, False Parsley, Hemlock, and Skunk Cabbage.  Miscellaneous: Boxwood, Castor Bean, Java Bean, Jequirity Bean, Potato (green parts), Rosary Pea, and Rhubarb (leaf blades).  (Know Your Plants – Connecticut Poison Control Center)

(1)  Having said this, you can’t fully trust the instructions, since researchers have found they can be wrong.  They have also found that local poison control centers will often be wrong, so the advice is to call the regional and national ones.

(Poison Prevention Tips)(Poison Prevention Brochures)(Poison Prevention Checklist)(Pesticide Poison Prevention Checklist) (HOUSEHOLD GUIDE TO POISON CONTROL) (Household Safety: Preventing Poisoning) (Preventing Poisoning: 10 Things You Need to Know)(Tips to Prevent Poisonings - CDC) (Poisoning in the United States: Fact Sheet) (Holiday Safety Tips) (Preventing Poisoning) (Preventing Poisoning: Safety Tips for You, Your Family, and Friends) (Poison Prevention.org) (Poison Prevention.org) (Home Safety Council Index) (Home Safety Council – Bathroom Poison Safety)  (Kitchen Poison Safety- Home Safety Council) (Poison Prevention Tips – Home Safety Council) (Outdoor Poisonings and Chemicals – Home Safety Council) (Pediatric Poisoning by John P. Lamb) (Poisoning in the United States: Fact Sheet - CDC)  

 

 

Carbon Monoxide

Friday, November 20th, 2009

Carbon monoxide (CO) is the leading cause of poisoning worldwide, with it killing and injuring more people than all other poisons combined. (Carbon Monoxide Protection) It is colorless and odorless, becomes toxic at 25 ppm (parts per million), and deadly at 400 ppm.  The early symptoms of CO poisoning often mimic the flu, causing headaches, nausea, unclear thinking, shortness of breath, weakness, and loss of muscle control.  CO accounts for about 40,000 known cases of poisoning in the U.S. each year, and in about 500 of these cases the person dies.  Some experts estimate that about 11,000 undetected cases occur each year, and because of this have recommended routine emergency room screening for CO poisoning. (Routine Screenings Uncover Hidden Carbon Monoxide Poisoning)  

In about half of the most serious cases where people do survive they will later develop permanent brain damage.  Now researchers know part of the reason why; in about half of the cases of permanent brain damage (so for a total of a quarter of the most serious cases where the people survive) it’s an autoimmune reaction.  CO alters some of the brain’s myelin in such a way that a person’s immune system attacks it, then doesn’t know when to stop, and goes after much of the rest of the brain’s myelin.  (Long-term Effects Of Carbon Monoxide Poisoning Are An Autoimmune Reaction)  (GAS ATTACK: Carbon Monoxide Poisoning

If that wasn’t bad enough, CO harms people in a number of other ways.  It can permanently damage a person’s heart, independently of its role in oxygen deprivation.  (Carbon Monoxide May Cause Long-lasting Heart Damage)  The fetus is particularly vulnerable to it, down to levels as low as 25 ppm.  (Tiny Levels Of Carbon Monoxide Damage Fetal Brain)  Children and infants might suffer hearing damage at these same levels. (How chronic exposure to tiny levels of carbon monoxide damages hearing in young ears)  Also the probability of hearing damage goes up if noise and carbon monoxide are combined. (Noise And Carbon Monoxide Exposure Increases Hearing Loss In Workers According To Université De Montréal Study

Here is a laundry list of things to do to avoid killing yourself with CO:

Have at least one CO detector in your home outside each sleeping area, and in your workplace.  Make sure they’re working.  If one goes off get out and call 911.  (Know About CO - Alarm Education) (The Silent Killer: Selecting an Effective Carbon Monoxide Detector that can Save Lives)  (AlarmSuperStore.com)

Have your gas or oil furnace, wood stove, fireplace, gasoline powered generator, gas water heater, gas oven, gas dryer, kerosene and gas space heaters, stove and any other gas, oil, wood, or coal burning appliances serviced by a qualified technician every year. 

All gas appliances must be vented, with a pipe that is somewhat vertical and not perfectly horizontal.  Always properly patch a vent pipe.  Only buy gas equipment that is certified by the AGA or UL. 

Your gas oven should have an exhaust fan, and also never heat your house with your oven.

Don’t use a generator, camp stove, kerosene heater, charcoal or gas grill, portable flameless chemical heater (catalytic) in your home, garage, or even outside near a window.  You should never burn charcoal indoors. (Portable Heater and Generator Safety) (Unvented Portable Kerosene Heaters – Safety Considerations)

Don’t run a car inside a garage, especially if it is attached to your house.  Have your car’s exhaust system checked every year.  If you have a vehicle with a tailgate, if you open it you must open the vents and windows to move air through your car or truck.  Be very careful about letting people ride in the back of an enclosed pickup truck.

Don’t use any gasoline powered engines such as mowers, snow blowers, chain saws, weed trimmers, generators, or small engines in enclosed spaces.  A propane or charcoal barbecue should only be used outdoors away from any buildings. 

If your refrigerator’s cooling unit gives off an odor have it checked, it could be giving off CO.

Spray paint, solvents, degreasers, paint removers, and cigarette smoke are all sources of CO.

It can be dangerous to swim near a boat’s stern when the engine is running.  You shouldn’t moor next to a boat that is running its engine or a generator.  Your boat should also have a CO detector. (Carbon Monoxide Poisoning Causes) (Boating and Boat Safety: Reduce the Odds of Carbon Monoxide Poisoning)

When you are traveling you should remember that there is no federal law that requires CO detectors in hotels, and about 50 people a year are poisoned in them.  (Hotel Guests At Risk From Carbon Monoxide Poisoning, According To Study)  Some people recommend traveling with a portable CO detector, and one such model is the Costar P-1.  (How to Ensure your Safety against Carbon Monoxide Poisoning in Hotels)

CO poisonings sometimes occur after a disaster when people are using emergency generators. (CDC – Carbon Monoxide Poisoning After a Disaster)

Doctors recommend that you seek prompt medical attention if you suspect CO poisoning and are feeling dizzy, light-headed, or nauseous. 

One positive step is that researchers have developed a new method for clearing carbon monoxide from a person.  Instead of using 100% oxygen they used a mixture of oxygen and carbon dioxide, which cleared CO three times faster.  (Simple New Method Holds Great Promise For Treating Carbon Monoxide Poisoning Quickly And Easily)

Another interesting wrinkle in the CO story is “that paranormal experiences track quite closely with symptoms of carbon monoxide poisoning.” (From a reader’s comment on Haunted Houses Possibly Explained – Lost Wanderer) (Carbon monoxide as an explanation for perceived hauntings – Haunted house – Wikipedia)

Having said all this, doctors are finding that CO can be useful in some circumstances.  It turns out that a little CO can be beneficial in treating pre-eclampsia. (When Preventing Pre-eclampsia, A Little Carbon Monoxide Goes A Long Way)  (However, I think a safer and more natural alternative might be vitamin D supplementation. (Vitamin D for the Prevention of Preeclampsia?  A Hypothesis.))  And CO is an anti-inflammatory that could be useful in treating certain lung diseases, multiple sclerosis, and other inflammatory conditions. (Carbon monoxide could fight disease and Carbon monoxide may protect against MS symptoms)  

Finally, here are some general overviews of CO related information and CO poisoning. (Carbon monoxide poisoning – Wikipedia) (An Introduction to Indoor Air Quality – Carbon Monoxide (CO))

Electrolyzed Water the ‘Miracle Cleaner’

Friday, September 25th, 2009

Electrolyzed water is produced through the electrolysis of salt water.  This process produces sodium hydroxide and hypochlorous acid, and when these two chemicals are recombined they make an excellent grease cutting detergent, which is also a superb disinfectant.  

The way it works is that NaCl, or salt, is composed of sodium and chlorine atoms, and the process of electrolysis breaks them apart.  When they are in water the sodium ions form sodium hydroxide, and the sodium hydroxide is alkaline, so it cleans and degreases.  And it does so with no fumes or scent.  Meanwhile, the chloride ions become hypochlorous acid, which happens to disinfect far better than bleach.  It will kill such things as E. coli, listeria, salmonella, and even anthrax spores. 

The amazing thing is that electrolyzed water is so nontoxic you can drink it, and it is also completely environmentally friendly.  In Europe they use it on burn victims, and in Latin America they use it to sanitize drinking water.  Russia and Japan have been using it for decades, and it has been approved for a variety of uses in the United States.  Finally, it costs less than 1 cent a gallon to make.    

This raises the obvious question, “Why isn’t everyone using this stuff for all their cleaning?”  The reason is that currently it does have some major drawbacks: 

It can’t be stored long because it quickly loses its potency.  Currently the machines that make it cost $10,000, and are designed for industrial use.  You also have to monitor the production process constantly to ensure the proper strength of the solution.  

So, if you are running something like a factory or hospital it makes perfect sense to use it.  But, unfortunately most people will have to get by with what they have been using, until they find a way to make a machine that will economically produce it in small quantities, and which can sit under the kitchen sink.

(Simple elixir called a ‘miracle liquid’ by Marla Dickerson)

Tinnitus and Permanent Hearing Loss

Tuesday, September 15th, 2009

Noise can be much more of a problem than merely an annoyance.  People instinctively tend to interpret noise as a threat, which means your body will respond by releasing adrenalin and raising your heart rate.  Over time this type of stress can cause people to become nervous and irritable, and can even contribute to cardiovascular disease.  Noise is also the major cause of hearing loss and tinnitus (ringing in the ears), and today people are losing more of their hearing acuity at younger ages than in the past.   Also, permanent hearing loss makes you even more vulnerable to future damage.   

Official sources usually say that the dangerous sound level starts at 85 decibels (dB), but some researchers caution that this standard isn’t strict enough, since people vary in their vulnerabilities, and the danger might actually start as low as 70 dB.  They argue that an exposure level of 70 dB should have a safe time limit of 24 hours, and that for every increase of 3 dB you should cut that limit in half.  Using this rule, the time limit for 82 dB would be 1/16 of 24 hours, or 1 & 1/2 hours.  82 dB is about the noise level of a shower.  A relatively quiet lawn mower is roughly 91 dB, and this works out to about 11 minutes of safe exposure. 

Most people are aware of many of the common dangerous noise sources, such as gunshots, explosions, jet engines, fire alarms, concerts, loud headphone music, construction noises (such as jackhammers), leaf blowers, factory noises, large computer fans, sirens, chain saws, and fireworks.  But there are also many less obvious sources, such as traffic (truck drivers often have high levels of hearing loss just due to traffic noise levels of around 90 dB),  the kitchen stove fan, the cheering at an indoor gym sporting event,  motorcycles, a subway train, a snow mobile, power drills, children’s musical and squeak toys, toy guns, classical music concerts, woodshop machinery, and even such everyday things as blenders, dishwashers, garbage disposals, loud TVs, hair dryers, printers, photocopiers, very loud conversations, vacuum cleaners,  and ringing phones. 

Many of these latter sources only tend to become dangerous when combined.  An example of when this might happen would be when a stove fan, dishwasher, and blender were all going at once.  If multiple appliances are going at the same time, the sound level can approach that of a chain saw at 110 dB.  One obvious safety rule is to use only a few appliances at a time.  You could also purchase noise reduced appliances. 

A good rule of thumb is that if you have to raise your voice to be heard from a few feet away the noise level is dangerous.  But, if you don’t want to just trust your instincts, you could go out and buy a noise meter alarm.  (Extech Sound Level Alert Alarm)

Another hazardous situation that most people don’t think about is that of air bag deployment.  When air bags deploy they permanently damage the hearing of 17% of exposed people.  Some individuals have even suffered ruptured eardrums, permanent tinnitus, and vertigo.  Safety experts fear that as car makers install more of them there could be big increases in the number of such injuries.   Short of wearing ear plugs while driving, or disabling your airbags, it isn’t clear how a person can protect themselves.  (Hearing Loss and Air Bags)  And it’s worse in a small car with the windows closed.  (Do Airbags Cause Hearing Loss? and Airbags and Ear Damage)  (I personally would consider disabling my air bags.)

There are a number of factors that can increase the risk of permanent injury arising from any given noise level; some of the most common ones are alcohol, caffeine, nicotine, being obese, and not exercising. 

Occupations where hearing loss is common are agriculture, mining, construction, manufacturing, utilities, transportation, the military, classical orchestra, and rock music.

Using adequate hearing protection is the common sense recommended solution.  Inexpensive ear plugs with about 30 dB of protection are available at drug stores.  People should be aware that wadded up tissue or cotton balls don’t provide sufficient protection.  (Noise-induced hearing loss – Wikipedia, and Presbycusis – Wikipedia

But, sometimes if the source is loud enough, even ear plugs might not be sufficient.  A leading scholar of Gregorian chant suffered permanent hearing loss from attending one rock concert, even though he was wearing ear plugs.  (Losing Your Ears to Music: The Hearing Loss Epidemic and Musicians)  To be safe under such conditions you might have to double up, and also wear something along the lines of gun protection ear muffs.  (AOSafety Shotgunner Hearing Protection Muffs)   I remember at one concert I was wearing 30 dB ear plugs, and the band hit a sound level that was painful.  To be clear about just how loud such concerts can be, there have been cases of lung collapse at them.  (Loud music lung collapse warning)  Guns are another particularly high risk situation, and when I shoot them I use both levels of protection. 

Researchers have also found that supplements can provide some protection.  Free radicals are a byproduct of cellular metabolism, and when the cells work too hard they can poison themselves with their own wastes and die.  Loud continuous noise can overwork cells, and this is one way loud noise damages hearing.  Antioxidants neutralize free radicals, and in one study, a combination of the antioxidants, beta carotene, magnesium, vitamin C, and vitamin E, prevented hearing loss in guinea pigs.  (Vitamin supplements may protect against noise-induced hearing loss)  Another group is working with the antioxidant N-acetylcysteine in a study to see if Marines can be better protected from hearing loss.  (Pill sought to cut hearing loss from noise

Besides loud noise, here is a long list of specific solvents, fuels, drugs, toxins, injuries, conditions, and diseases that can all cause permanent, and/or temporary, hearing loss: toluene, styrene, xylene, n-hexane, ethyl benzene, perchloroethylene, trichloroethylene, p-xylene, white spirits/Stoddard, carbon disulfide, hydrocodone, aspirin (temporary), carbon monoxide, hydrogen cyanide, lead (Beethoven’s deafness might have been caused by lead poisoning), mercury, paraquat, measles, meningitis, mumps, multiple sclerosis, Lyme disease, whiplash, head injury, tumor in the ear, otosclerosis, osteoarthritis of the tiny bones in the ear, superior canal dehiscence (a gap in the bone cover above the inner ear), enlarged adenoids, AIDS, and, in newborns, congenital Chlamydia and syphilis, fetal alcohol syndrome, and premature birth. 

Moving from the specific to the general, classes of substances, conditions, and diseases that can cause hearing loss include: organotins, salicylates (temporary), antineoplastics, anti-malarial drugs, aminoglycosides, macrolide antibiotics, non-steroidal anti-inflammatories, diuretics, autoimmune disorders, ear infections, foreign objects or was in the ear, nose allergies, and organophosphate pesticides.  (Hearing impairment – Wikipedia, Ototoxicity – Wikipedia, and Ototoxic Medications)

Current treatments for hearing loss include: hearing aids, and cochlear implants.  For the future, researchers hope that gene therapy will someday become available to regenerate the lost and damaged hair cells. 

For tinnitus Doctors currently have noise maskers, and for the future they are experimenting with such things as magnetic stimulation and implanted electrodes that temporarily quiet the brain cells causing the noise.  Some drugs that are normally used to treat conditions such as Alzheimer’s, epilepsy, and alcoholism might be useful.  They alter the neurotransmitters in the brain, and for some people this can reduce their tinnitus.  (New Therapies Fight Phantom Noise of Tinnitus, and Secret to Treating Tinnitus in Vets may be Unlocked in Zebrafish)

Here is a list of the noise levels from some common sources (the numbers depend on assumptions of distance):

  • softest audible sound: 0 dB
  • normal Breathing: 10dB
  • soft whisper (at 5m): 30dB
  • computer: 37-45 dB
  • library: 40 dB
  • typical living room: 40 dB
  • forced hot air system: 42-52 dB
  • radio playing in the background: 45-50 dB
  • typical neighborhood: 40-50 dB
  • wilderness area: 50 dB
  • moderate rainfall: 50 dB
  • dishwasher: 51 dB
  • bathroom exhaust fan: 55 dB
  • microwave: 57 dB
  • typewriter: 55-65 dB
  • clothes dryer: 57 dB
  • normal conversation: 60dB
  • printer: 62 dB
  • Increased risk of heart disease starts at 65 dB. 

  • refrigerator: 40-65 dB
  • window fan on high: 63 dB
  • dishwasher: 65 dB
  • The 70 dB safe limit is 24 hours.

  • normal piano practice: 60-70 dB
  • cloths washer: 65-70 dB
  • handheld electronic games: 68-76 dB
  • driving car: 68-76 dB
  • dinner table conversation: 69 dB
  • alarm clock: 70 dB
  • phone: 70 dB
  • kitchen exhaust fan: 70 dB
  • vacuum cleaner at 4 feet: 70-90 dB
  • busy traffic: 70 dB
  • The 73 dB safe limit is 12 hours.

  • applause at concert: 73 dB
  • driving in car: 73 dB
  • The 79 dB limit is 3 hours.

  • car, window open at highway speed: 79 dB
  • blender at 4 feet: 80 dB
  • garbage disposal :80 dB
  • city traffic: 80 dB
  • average factory: 80dB
  • freight train: 80 dB
  • electric can opener: 80 dB
  • shower: 83 dB
  • coffee grinder: 84-95 dB
  • dentist drill at 1″ from sound meter: 86 dB 
  • The 91 dB limit is 11 minutes and 15 seconds. 

  • Niagara Falls: 90 dB (about the loudest source of continuous noise you could be exposed to in nature)
  • truck traffic: 90 dB
  • electric shaver: 80-92 dB
  • hair dryer: 80-95 dB
  • oboe: 90-94 dB
  • clarinet: 92-103 dB
  • piccolo: 95-112 dB
  • The 94 dB limit is 5 minutes and 35 seconds.

  • weed whacker: 95 dB
  • subway train at 200 feet: 95 dB
  • playing banjo at banjo-to-ear distance: 97 dB
  • legion hall concert: 90-97 dB
  • food processor: 93-100 dB
  • children’s squeak toys: 98-105 dB
  • The 100 dB limit is 1 minute and 24 seconds.

  • flute: 85-111 dB
  • trombone: 85-114 dB
  • motor cycle: 100-115 dB
  • jackhammer at 4 feet: 100 dB
  • outboard motor: 100 dB
  • farm tractor: 100 dB
  • garbage truck: 100 dB
  • snowmobile: 100 dB
  • lawn mower: 90-100 dB
  • leaf blower: 95-105 dB
  • circular saw: 100-104 dB
  • rock concert: 110 dB
  • chain saw: 110 -125 dB
  • symphonic music peak: 120-137 dB
  • ambulance: 120 dB
  • bagpipes: 100-122 dB
  • stock car race: 130 dB
  • toys which amplify the voice: 135 dB
  • fireworks: 140 dB
  • gunshot: 140 dB
  • rock band near speakers: 145 dB
  • jet takeoff from 80 feet: 150 dB
  • 12-guage shotgun: 165 dB
  • rocket at launching pad 205 dB
  • (very quiet 0 – 30 dB, quiet 30-50 dB, annoying 70-80 dB, possible damage over time 70 + dB, painful 110+ dB, eardrum rupture 140+ dB)

    (Noise LevelsNoise: The Hidden Danger, Hearing Loss: How to Protect Yourself, and Ringing in the Ears -Prevention)

    (Decibel Loudness Comparison Chart, Decibel Level Comparison Chart, Decibel Table, Decibel Comparison Chart, and Dangerous Decibels)

    Diabetes

    Saturday, September 12th, 2009

    Summing this blog entry up, I would say that the likely major ways of greatly reducing your risk of diabetes boils down to: getting enough vitamin D, having helminths (hookworms and whipworms), eating a Paleolithic Diet, engaging in intermittent fasting, exercising, getting enough sleep in complete darkness, consuming curry, cinnamon, and cloves; and avoiding toxins.    

    I previously blogged about the theory that in Type I diabetes the beta cells aren’t dead, but instead malfunctioning pain cells in the pancreas are preventing them from producing insulin.  (A Cure for Diabetes?)  Of course, there are a quite a few more ideas out there about the condition:

    In Finland, a cohort of infants born in 1966 were given vitamin D supplements of up to 8,000 IU/day, and had about 1/3 the rate of type I diabetes as other cohort groups.  (Intake of vitamin D and risk of type I diabetes: a birth-cohort study)   Finland later adopted a level of vitamin D supplementation closer to that of the United States, and their population naturally has lower levels of sun exposure, so today the blood levels of vitamin D there are likely very low.  Today Finland is the diabetes capital of the world.  (Finnish epidemic offers clues to diabetes)  (See also: Vitamin D Council

    Helminths might play a role in preventing diabetes through down regulating the immune system.  (Review series on helminths, immune regulation and the hygiene hypothesis) (See also: Hookworms are our Little Friends)

    The nitrates in our foods might be risk factors for Alzheimer’s, Parkinson’s, and diabetes.  These nitrates are found especially in bacon, cured meats, and ground beef; but they are also in such products as beer, cheese, water, rubber and latex products, cosmetics, fertilizers, and pesticides.  (Processed foods linked to Alzheimer’s and diabetes)  Avoiding such foods supports the argument for the Paleolithic Diet, which according to one man’s experience cured his type II diabetes. (Paleo Diet – So Easy a Caveman Can Do It!)  The Paleolithic Diet people argue that the high glycemic foods we eat cause chronic hyperinsulinemia, which leads to a host of diseases, including diabetes. (Hyperinsulinemic diseases of civilization: more than just Syndrome X)  Advocates of the sweetener Xylitol argue that it is ideal for diabetic patients.  (The Sweet Miracle of Xylitol, and Xylitol)  Celiac disease, which is an autoimmune disease caused by an immune reaction to the gluten found in grains,  is associated with a number of conditions, including diabetes, short stature, infertility, and anemia.  (Largest Study Ever Finds That One Out of Every 133 Americans May Have Celiac Disease

    Intermittent fasting can help prevent diabetes and brain deterioration.  (Meal Skipping Helps Resist Diabetes, Brain Damage, and Posts Tagged ‘Intermittent Fasting’)

    Exercise reduces the risk of diabetes through weight control, growth factor changes, and the reduction of inflammation. (Exercise builds brain health: key roles of growth factor cascades and inflammation, and Changes in Vigorous Physical Activity and Incident Diabetes in Male Runners)  In one study, multiple short duration exercise sessions of 3 x 10 min/day are superior to 1 x 30 min/day in glycemic control.  Cardiovascular fitness improvements were similar for the two groups.  (Comparison of the effect of multiple short-duration with single long-duration exercise sessions on glucose homeostasis in type 2 diabetes mellitus)  Apparently 4 x 30 second sprints 3 times a week can greatly reduce the risk of diabetes and heart disease.  (Short fast sprints ‘cut’ diabetes, and Extremely short duration high intensity interval training substantially improves insulin action in young healthy males)

    Heavy snoring, sleep apnea, and insomnia have been implicated in cardiovascular diseases, cancers, and diabetes.  Researchers have found that losing even a single night’s sleep causes the immune system to turn against healthy tissues in an autoimmune reaction.  (Getting a Handle on Why We Sleep)  The book, Lights Out: Sleep, Sugar, and Survival argues that our lack and sleep, and especially darkness, fouls up our hormonal systems; this greatly contributes to such diseases as diabetes, depression, heart disease, and cancer.  The author advises getting enough sleep, and sleeping in total darkness. (See also: Posts Tagged ‘Sleep’

    Nursing an infant reduces his/her later risk of diabetes, cancer, allergies, infections, and arthritis. (Nursing Mothers…But Still Best for Babies)

    Men with short legs, possibly caused by malnutrition during their first three months of gestation in utero, are at increased risk for diabetes and cardiovascular disease.  (Men with Short Legs More Likely to Suffer Heart Attacks

    Large amounts of curry (turmeric) stops diabetes in diabetic mice.  (Curry for Diabetes)  Cinnamon and cloves improve risk factors for diabetes and heart disease.  (Cinnamon, Cloves Improve Insulin Function)  Dr. Richard A. Anderson found that doses of 1 to 6 grams of cinnamon daily improved blood profiles of diabetic patients.  (A Spoonful of Cinnamon Helps Treat Diabetes)

    Exposure to pesticides and air pollution have both been linked to diabetes.  A major chemical accident happened in Seveso Italy, and years later those townspeople with higher levels of persistent organic pollutants in the fat in their bodies suffered much higher levels of type II diabetes.  (Could the diabetes epidemic be down to pollution?)  The use of the pesticide trichlorfon has been found to increase the risk of diabetes by 85%.  (Pesticides linked to diabetes risk)  Arsenic might be a risk factor for diabetes, since people with traces of it in their urine are more likely to suffer from it.  (Are Traces of Arsenic in Tap Water Linked to Diabetes?)

    Gastric bypass can cause remission in Type II diabetes independently of weight loss or obesity.  What might be happening in that the upper intestines, the duodenum and jejunum, produce a regulatory hormone, anti-incretin, which is activated by the passage of food through this part of the intestine.  Anti-incretins lower the insulin level, and incretins raise it; and together they regulate its levels.  Researchers speculate that diabetics produce excess anti-incretin, which drives down their insulin, and block its action.  (Rethink On Cause of Type 2 Diabetes

    The malarial drug hydroxychloroquine HCQ might prevent the development of diabetes in arthritic patients.  (Antimalarial Drug Prevents Diabetes in Arthritis Patients, Study Suggests)

    The risk of getting Alzheimer’s doubles if a person has diabetes before age 65.  (Getting Diabetes Before 65 More Than Doubles Risk for Alzheimer’s Disease)  And Alzheimer’s might be a third form of diabetes.  (Discovery supports theory of Alzheimer’s disease as a form of diabetes)  (See also Alzheimer’s)  Children of mothers with autoimmune diseases, such as diabetes, arthritis, and celiac disease, have up to three times the risk of getting autism.  (From Gut Buddies, Autism May be Linked to Mom’s Autoimmune Disease)

    It’s little surprise that misinformation regarding diabetes comes from our government, and it’s likely that the diabetic dietary guidelines recommend such a high level of grain consumption they actually increase your chances of becoming diabetic.  (The Best Way to Get Diabetes: Follow the Diabetes Dietary Guidelines)  Also, the GI index is very over simplified.  (GI Blues: What’s wrong with the GI Diet? Interindividual Variability and Intra-Individual Reproducibility of Glycemic Index Values for Commercial White BreadGlycemic Index Values Vary from One Test to the Next)  More misleading information comes from the book, The China Study, which concludes that there is a strong relationship between consuming animal products and numerous diseases, such as diabetes, cancers, heart disease, autoimmune diseases, etc.  Of course, the Paleolithic Diet people would argue that this is because of the types of meats we consume, which come from domesticated grain fed animals.  This relationship wouldn’t exist if the animal products people ate were from healthy grass consuming wild animals.

    Ergot Poisoning, the Likely Cause of the Salem Witch Trials

    Thursday, September 3rd, 2009

    I find natural explanations for historical mysteries and legends fascinating.  I first heard about the ergot theory of the Salem witch trials about 20 years ago, and PBS did a nice review of it (Ergot Poisoning - the cause of the Salem Witch Trials) on a Secrets of the Dead episode (The Witches Curse) back in 2002.  When Linnda Caporael was a senior in college she was writing a paper on the play, The Crucible (which is about the trials).  While reading a book about the play, she noted that the author said he couldn’t explain the hallucinations of the people in Salem.  As a child, she had read about a possible case of mass ergot poisoning in France, and was able to make the connection. 

    The most interesting thing about this theory is that seems to explain, not only the Salem case, but many of the instances of witch hysteria in European history.  What some scholars think happened is that an early case of mass ergot poisoning occurred, and it was diagnosed by authorities as witchcraft.  This became the paradigm, and so from then on everyone knew what witchcraft was, and how to recognize it.  If you look throughout European history, and correlate the incidences of witch hysteria with the weather, you find that those cases frequently occurred when the weather was ideal for the ergot infection of rye. 

    In addition to its immediate effects, ergot also suppresses the immune system, making people more vulnerable to disease, and the symptoms of plague, a disease that was common at that time, are similar to those of ergot poisoning.  So, the sequence that might have frequently occurred is they first had good weather for an ergot blight.  Then people got poisoned, and therefore had hallucinations and weakened immune systems.  Finally they had a major plague outbreak.  No wonder they thought they were cursed.  (Rye Ergot and Witches, Ergot, See also Witch-hunt -Wikipedia for a sociological perspective on witch hunts.)

    Pregnancy & Child Related Information

    Wednesday, September 2nd, 2009

    I’ve previously blogged about how geophagy (eating clay) has been practiced for thousands of years to prevent morning sickness.  Pregnant women become hyper-sensitive to environmental toxins, and morning sickness helps protect the developing fetus from deformities.  It now turns out that all that misery could pay off for yet another reason, because women who have a greater degree of morning sickness might have more intelligent babies.  (Morning Sickness may be Sign of a Bright Baby)  The researchers involved theorize that the hormones which cause it might also protect a baby’s brain.  

    S. Boyde Eaton, et al., have written (Dietary Intake of Long-Chain Polyunsaturated Fatty Acids during the Paleolithic, p. 20) that our brains are somewhat smaller than our Paleolithic ancestor’s brains, and that one reason might be our modern dietary deficiency in DHA omega-3 fats.  Along with DHA, it seems that, for rats, enriching the environment of the mother long before she becomes pregnant can affect the learning of her offspring.  Researchers theorize that the mother’s learning affects the nature of the hormones she will release during her later pregnancies.  This will affect epigenetic chemical markers on her offspring’s genes, which will in turn affect these genes’ expression during brain development, finally causing changes in the brains of the pups.  (Can Experiences be Passed on to Offspring? and A Mother’s Experience can Alter her Offspring’s Memory Performance)  Meanwhile, stress during pregnancy very likely harms a baby’s brain, and might increase the risk of schizophrenia.  Researchers think the mechanism is likely related to the stress hormone cortisol crossing the placenta.  (Stress Harms Baby’s Brain While in Womb)  Another possible factor that could increase the risk of schizophrenia is having the flue during pregnancy. (Flue During Pregnancy may Increase Risk of Schizophrenia in Certain Offspring

    There are some indications that vitamin D deficiency is a risk factor for preeclampsia.  (Vitamin D for the Prevention of Preeclampsia?  A Hypothesis.)  This is a condition that occurs in pregnancy, which causes the patient to develop hypertension, along with protein in their urine.  It’s widespread, affecting about 10% of pregnancies, and is currently only treatable through termination.  It is most common in first pregnancies, and some researchers think that it’s the result of the mother’s immune system inappropriately attacking fetal cells.  The theory is that they are being triggered by the foreign antigens that were introduced by the father.  So, besides vitamin D supplementation, another recommendation is to delay pregnancy for a while after beginning sexual relations, on the theory that this allows the mother’s immune system to become acquainted with the father’s sperm’s antigens.  (Introduction and Overview of Evolutionary Medicine (p.24) by Wenda R. Trevathan, et al.) 

    Low levels of vitamin D are also associated with chronic pain and muscle weakness, which suggests this might be a possible factor in a painful difficult birth. (Lack of Vitamin D Linked to Pain, and Recent Developments in Vitamin D Deficiency and Muscle Weakness Among Elderly People)  Stephan Guyenet, of Whole Health Source, reports that pelvic inlet depth index was larger in our hunter-gatherer ancestors (97.7% versus 92.1% today), and that this might be still another reason why childbirth is difficult for modern people.  (Longevity & Health in Ancient Paleolithic vs. Neolithic peoples)  Because vitamin K2 deficiency narrows the bone structure of the face, it seems natural to speculate that this could also be part of the reason for our lower pelvic inlet depth index today. 

    Difficult births lead to caesareans, and, using MRIs, researchers have been able to show that women who have had c-sections had lower response levels to their baby’s cries.  This might indicate weaker bonding with their infants.  Researchers suggested that this possibly occurred because these women missed out on the hormonal priming from oxytosin that takes place during a vaginal delivery.  (C-sections may Weaken Bonding with Baby)  

    Home birthing is as safe as in the hospital.  Two studies, one from the Netherlands and the other from Canada, found no evidence of greater death rates among home births, for low risk pregnancies, in either the mothers or their babies.  In the Netherlands study nearly 1/3 of those who started at home did end up being transferred to the hospital, but the risk was no greater than those mothers who had started out in the hospital.  Researchers said that a good midwife was the key. (Home Births “as Safe as Hospital,” and Home Birth with Midwife as Safe as Hospital Birth, Study) (See also: The Natural Family Site, and Why Have Natural Childbirth?) 

    Also, as I previously blogged, some people claim that placenta eating can prevent postpartum depression.  (Placenta Benefits.info)

    The natural childrearing people argue against circumcision on a number of grounds, including that they believe there doesn’t seem to be much of a reason for it.  (Put Down that Knife!  11 Reasons not to Circumcise, Circumcision – Wikipedia, and Circumcision Rates)

    Pacifiers reduce the risk of sudden infant death syndrome (SIDS) by about 90%.  (Pacifier Greatly Reduces Risk of Sudden Infant Death)  They reduce the risk regardless whether or not the infant sleeps on his/her stomach, in soft bedding, or his/her mother smoked.  Problems such as thumb sucking, tooth development, and difficulties breast feeding can be avoided by waiting a few weeks before using one, and stopping when they become toddlers.  (However, there apparently is a trade-off, because, according to Gabe Mirkin, studies from Finland found that children who use pacifiers are more likely to have recurrent ear infections.)  Other people also recommend co-sleeping as protective.  (See below)  One more way of lowering the risk of SIDS is by using a fan to circulate the air in the room.  This reduces the risk by 72%. (Fan Use Linked to Lower Rate of Sudden Infant Death)  (See also: Sudden infant death syndrome – Wikipedia)

    Coming to very similar conclusions as The Continuum Concept by Jean Liedloff, here is an article on Evolutionary Psychology: Natural Parenting - Back to Basics in Infant Care by Regine A. Schon.     Matt Metzgar wrote up this outline.  (I inserted some additional materials and links):  

    Evolutionary Function of Crying (For a second opinion see: Should Infants be Allowed to Cry Themselves to Sleep?)

    • Crying signals genuine needs of the infant
    • Crying should be immediately attended to by the mother or caregiver
    • Crying takes significant physical effort on the part of the infant
    • The immediate response to crying should be to restore physical contact between the caregiver and the infant

    Infants as Carried Young

    • Hunter-gatherer women carried their infants in slings close to the body
    • This increased beneficial skin-to-skin contact between the mother and the infant
    • The common leg positions of babies suggest they are adapted for carrying

    Cosleeping  (Regarding co-sleeping: Mr. Metzgar cites this article (which argues in favor of it), Why Babies Should Never Sleep Alone: A Review of the Co-sleeping Controversy in Relation to SIDS, Bedsharing, and Breastfeeding, and this site, Mother-Baby Behavioral Sleep Laboratory.  See also: The Benefits of Co-Sleeping)       

    • Cosleeping for the infant and mother has been the universal norm throughout most of human history
    • Bedsharing is the environment to which the vulnerable newborn is best adapted
    • Cosleeping may reduce some forms of SIDS

    Breastfeeding (See also: Breastfeeding Linked to Smarter Babies (Again)  This article points out that, as well as being correlated with 5.9 points of higher IQ, breastfeeding also apparently reduces the chances of a mother later developing rheumatoid arthritis, and lessons the child’s odds of later developing cardiovascular disease.  This article, Big Bad Cavities: Breastfeeding is not the Cause, states that more than three dozen studies have shown no link between breastfeeding and the disease of Early Childhood Carries (ECC).  Medical News Today reports that the concentration of volatile organic compound toxins in breast milk are much lower than indoor air, and also much lower than the safe levels for drinking water. (Concentrations of Certain Toxins in Breast Milk are Low, Study Finds))

    • No alternative to breast milk existed before the transition to a farming economy
    • Therefore, infants have been breastfed for 99% of all human existence
    • Artificial substitutes have been unable to replicate the complex structure of breast milk
    • There is mounting evidence about the many benefits of breastfeeding on child development

    Extrogestation

    • Human infants are born in an exceptionally immature state
    • The conditions for the early part of infant life should attempt to mimic that of the womb
    • This includes close contact with the mother’s body in a tight, warm embrace
    • Heartbeat sounds are comforting to an infant; women tend to hold infants on the left side of their body, close to their hearts
    • Rocking an infant provides a calming effect since it mimics the movement stimulation the infant received from the mother’s normal daily movements
    • Swaddling replicates the feeling of the womb and has been proven effective in calming infants

    Toilet Training  (What is Infant Potty Training, Benefits of Infant Potty Training, Infant Potty Training, The Controversy over Infant Potty Training, Shaping self-initiated toileting in infants)  (There are also major health benefits of squatting instead of sitting for defecation.  (The Squat Toilet)  The repeated refrain is to do things the way nature intended.)

    • Infants were historically toilet trained much earlier than in modern times
    • Natural toilet training depends on reading an infant’s signals and responding appropriately
    • Children trained in this way complete toilet training anywhere from 6 months to 2 years

    Matt also reviewed this book, The 90-Minute Sleep Baby Program.  As he says, the basic idea behind the book is that humans have a 90 minute cycle of activity and rest.  This means that when a baby wakes up their next nap should be 90 minutes later.  (Older children might string several of these together.)  22 out of 27 reviews on Amazon gave the book 5 stars.  Matt speculates that many children today are sleep deprived, which is obviously troublesome.  It turns out that sleep deprived children have twice the risk of becoming obese.  (Sleep Deprivation Doubles the Risk of Obesity in Both Children and Adults

    Matt also very favorably reviewed, The Happiest Baby on the Block.  The author argues that babies need a uterus like environment, and he suggests a number of tactics for mimicking it.  These include swaddling, shh sounds, side/stomach position, swinging, and sucking.  He claims that his program will calm almost all babies.  

    Matt also pointed out Baby Sign Language, which allows the infant to communicate his/her needs at a much younger age.  I think it’s very surprising that this wasn’t stumbled upon thousands of years ago, yet it is a remarkably simple and wonderful advancement.  It apparently isn’t some sort of silly fad, but brings real benefits, which I think all parents would appreciate, including greatly reduced frustration on everyone’s part, and increased language skills. 

    Matt has blogged about Baby Led Weaning, which takes the position that children shouldn’t be fed pureed foods (Pureed Food “isn’t Natural for Babies’), but instead weaned directly onto solid foods.  The argument behind the idea is that this is much closer to the way our ancestors would have done it.  (It should be said that hunter-gatherers often did pre-chew the child’s food to help him/her along.)   

    I have blogged before about going barefoot, and children who go barefoot as long as possible have about half the rate of flat footedness later on.  Having said that, being flat footed doesn’t appear to be as big a problem as people once thought.  There appears to be no relationship between the height of children’s arches and their ability to perform athletically, and it very well also might not affect their injury rates. (Flat Feet don’t Impair Kid’s Motor Skills)  

    A study from Sweden concluded that risk factors for snoring as an adult include respiratory and ear infections as a child, being raised in a large family, and being exposed to a dog at home as a newborn. (Have A Dog? Your Child is More Likely to Snore as an Adult) 

    Children who suffer from cyclic vomiting might actually be suffering from migraines. (Gabe Mirkin: Cyclic Vomiting

    Low levels of carbon monoxide, 25 parts per million, might cause oxidative stress on the cochlear nerve, and permanently damage the hearing of children.  Such carbon monoxide can come from tobacco, cooking, and heating appliances.  (How Chronic Exposure to Tiny Levels of Carbon Monoxide Damages Hearing in Young Ears)  However, the main cause of hearing loss in modern world is loud noise.  The blast from a single gunshot, or the loud prolonged noise of a rock concert, can result in permanent hearing loss and tinnitus (ringing in the ears).

    Many cases of bed-wetting might be caused by breathing problems.  63% of bed-wetting children stopped when they had surgery to remove their adenoids or tonsils, and the use of a plate to widen the palate of bed-wetters with narrow palates ended the condition in 70% of cases. (Breathing Troubles the Cause of Bed-wetting?)   Gabe Mirkin discusses another theory, that it’s the lack of antidiuretic hormone that causes the problem.  This hormone causes the kidneys to shut down at night.  (Bedwetting

    The BBC reports that a 10 minute test for dyslexia has been developed that can be used starting at age 3 & 1/2.  (Early Warning Test for Dyslexia)  The test has children repeat sentences and re-tell a story while looking at how the child builds sounds up into words.  For parents of children who seem a little different there is the book, Quirky Kids: Understanding and Your Child Who Doesn’t Fit In- When To Worry And When Not To Worry.  One reviewer thought the book would be most helpful to parents who are just beginning to suspect something is unusual, but don’t know what might be the problem.  It also debunks a number of folk myths out there, and reportedly has a good section on the pros and cons of various medications.  Science Daily has this article, Specific Behaviors Seen in Infants Can Predict Autism, New Research Shows, which reports that Canadian researchers have discovered that there are behavioral signs that can accurately predict autism in children as young as one year old.  (See also: The Vitamin D Theory of Autism)

    According to a study by the University of Rochester Medical Center, there is no detectable risk to children from the mercury in the seafood their mother’s ate, up to 12 servings a week.  The study period was before birth to age 9, and the children were tested for 21 different cognitive, neurological and behavioral functions.  These abilities included concentration, attention, problem-solving, and motor skills. (No Detectable Risk From Mercury in Seafood, Study Shows

    Tonsils serve to trap germs and train the white blood cells when children are young, but as they grow older their importance lessons.  Doctors generally seem to say that their removal can be justified if they obstruct the throat, or the child suffers from frequent throat infections.  (Dr. Alan Green on Tonsil Removal)    

    Not surprisingly, mother’s who talk about people’s mental states, such as beliefs, wants, and intentions, have children with a greater understanding of social interactions.  (This obviously does not establish causation, because mothers with greater social skills might pass on genes that also dispose their children to have those same skills.)  Researchers note that these greater social skills do not necessarily imply that these children will be better behaved. (The Secret to Building Children’s Social Skills)   The Incredible Years is an organization which hosts a variety of programs for teaching parents, teachers, and children social skills.  It turns out the ability of a mother to read her child’s emotions is more important than her social status for the child’s development. (Why Mind-Reading Mums are Best

    Not surprisingly, children are happier who have a sense of spirituality, that is meaning in life, and they think that their lives have value.  Good interpersonal relationships also helped, and accounted for 27% of the happiness variation between children.  Being more sociable was also a happiness predictor.  (Spirituality is key to kids’ happiness

    Researchers want to know why some children are resilient in spite of bad upbringings.  They have found that resilient children tend to share a number of characteristics:  They have at least one supportive person in their life, have a positive outlook, a pleasant altruistic personality, they are eager to learn, and have problem-solving skills.  They take responsibility for their mistakes, and move on.  They also have an interest or friend they can turn to when they need to.  (This description to me sounds somewhat like the characteristics of lucky people.)  (Raising Resilient Children Foundation, their book, Psychosocial Characteristics of Resilient Children, and The Resilient Child)

    Sara Bennett and Nancy Kalish, in The Case Against Homework: How Homework is Hurting our Children and What We Can Do About It, argue that there’s almost no evidence that homework helps kid’s academic success.  They point out that the amount of homework has skyrocketed in recent years, which is contributing to an epidemic of obesity, and robs kids of the time they need to be kids.  They also give advice on how to separate useful assignments from the time wasters.  Richard Louv, author of, Last Child in the Woods, argues that children suffer from a nature-deficit disorder. 

    For preventing myopia, besides a low glycemic diet/ Paleolithic Diet, it seems that playing outside is also protective.  Researchers in Australia have found that kids who spend a lot of time outside have lower myopia rates. (Kid’s eyes need the great outdoors)   

    I have previously blogged about The Freedom to Learn site.  Peter Gray has a series of articles which argue that play is essential for healthy human life, and maintaining a band’s existence.  John Holt takes a similar approach in his books, How Children Learn and How Children Fail, that children are natural learners, and the process of forcing them to learn in school changes their personalities for the worse.  David Elkind’s book, The Power of Play: How Spontaneous Imaginative Activities Lead to Happier Healthier Children, argues that play is changing from teaching children social roles, vocations, and academic skills to teaching them brand loyalty, fashion consciousness, and group think.  Matt Metzgar reviewed Susan Linn’s book, The Case for Make-Believe: Saving Play in a Commercialized World, which argues that many of today’s toys are scripted, and that they don’t foster the development of social and critical skills.  Matt also discussed this article, Sucker-Me Elmo, which questions the merits of electronic toys.  Meanwhile, New York City is developing the next generation playground, which is designed to foster the imagination of kids. (New York developing a next-generation playground)  Here is a site that features educational products for children We Make Stories, which allows the child to write and print their own stories.

    It turns out that pedophiles don’t randomly search through MySpace sites searching for kids.  Instead they go for those kids in chat rooms who are presenting themselves in sexually suggestive ways. (Welcome to Crimes Against Children Research Center, and Salon – Stop Worrying about your Children)  This information is from the same woman who runs Free Range Kids, which I have written about before.  Boing Boing favorably reviewed this book, If Your Kid Eats this Book Everything will Still be Okay: How to Know if Your Child’s Injury or Illness is Really an Emergency by Lara Zibners.  Zibners is an emergency room pediatrician who says that 75% of late night emergency room visits are unnecessary, and this book is a guide to all the things you don’t have to worry about.

    On the other hand, there are real risks out there, and Dreambaby makes safety products to help reduce these.  Science Daily has a story, Homes Need More Protection Against Falls, which points out that falls are the second leading cause of death among children, and that this is because many homes have inadequate protection against them.  Such homes are lacking such commonsense things as banisters, grab bars, anti-slip bathtub strips, and child safety gates.  Eco Child’s Play has a similar outlook, and advocates ”Green Parenting for Non-Toxic Healthy Homes.”  This site focuses on alternative medicine, and sources of toxins from such things as plastics, medicines, and cleaners.  (See, for example: 12 Warnings for Parents and Kids in 2008, 10 Ways to Avoid Toxic Plastic - BPA (Bisphenol A), Synthetic Estrogens and Your Child, Smart Medicine for a Healthier Child, 9 Best Articles for Natural and Home Remedies on Echo Child’s Play in 2008, Another Reason We Can’t Trust the FDA, Melamine…, New Study Suggests Link Between Hairspray Exposure and Genital Birth Defect, How Safe is Your Child’s Playground?, Balloons Cause More Deaths than Marbles, and Finding Safer Products for our Children)  They also discuss products to make parent’s lives easier. (Postpartum Bamboo Belly Wrap Helps Shrink Your Belly and Prevent Stretch Marks, and Why Tilty is a Better Sippy

    In recent years people have been taking bullying far more seriously, and researchers have found that, at least with rats, bullying might scar the brain for life.  When rats were bullied new brain nerve cells would form, but then die, and they acted depressed.  (Bullying May Scar Brain for Life

    Psychologist Randall Flanery has this advice for being a great dad:  Run a benevolent dictatorship.  Be friendly, but not a friend.  Admit when you’re wrong.  Remain firmly flexible.  Stick around even when they don’t want you to.  Ask questions.  Don’t take it personally if they express unhappiness.  Know that parenting is 24/7, and then some.  Keep in mind that who you are is more important than what you buy them.  Laugh.  Of course, there is also the book, Supernanny: How to Get the Best from your Children by Jo Frost.  For the sport parent, there is Who’s Game is it Anyway: A Guide to Helping Your Child Get the Most From Sports, Organized by Age and Stage by Amy Baltzell.

    Alzheimer’s

    Saturday, August 15th, 2009

    In a previous blog I discussed the Cycad Hypothesis of Alzheimer’s, which postulates that excitotoxicity caused by BMAA toxin from cyanobacteria might be the root cause of the disease.  However, there are many other possibilities.

    If I had an identical twin who had developed Alzheimer’s, I would consider everything I could think of to prevent it.   The short list would probably include:  I would eat a Paleolithic Diet, intermittently fast, practice good dental hygiene, exercise, take vitamin D supplements, folic acid, omega-3 fats, curcumin, Longevinex, green tea, and resveratrol.  I also would avoid STDs, concussion-risky sports, toxins, radon, electromagnetic fields, heavy cell phone use, and heavy metals. 

    Come to think of it, this just sounds a lot like extremely healthy living.  Below are the details:

    The disease has an obvious genetic component, since having a family history of Alzheimer’s increases your risk, as does having an identical twin with it (concordance is 59%).

    A relatively new theory is that it is a third form of diabetes.  (Alzheimer’s could be diabetes-like illness, study suggests)  It turns out that the brain produces its own insulin.  In Alzheimer’s the brain’s insulin production, as well as its ability to respond to insulin, drops off as the disease becomes more severe.  Brain cells also lose the ability to respond to insulin growth factors, and when rats were treated with related insulin-like growth factors to correct for this lack of response the typical loss of learning and memory was prevented.  Regular diabetes itself is also a risk factor for the disease.

    A moderate or severe concussion will roughly double your later risk of Alzheimer’s.  (Study bolsters head injury, Alzheimer’s link)  This is also true of mild repetitive head injuries.  (Fortunately isolated mild concussions don’t seem to increase your risk.) 

    Besides avoiding head trauma, having a generally healthy cardiovascular system and avoiding atherosclerosis helps avoid the disease.  Having moderately high cholesterol and a diet higher in saturated fats are risk factors.  Atrial fibrillation makes it 44% more likely you will get it.  Cardiovascular disease increases your risk by 30%.  And if you’ve had a stroke your chances go up by nearly 50%.  Being obese, metabolic syndrome, and smoking during midlife all put you at greater risk.

    Researchers suspect that early nutrition, as indicated by various body measurements, might play a role.  Women with short arms have a 50% greater risk, while a longer shin length is protective. 

    Various viruses and microbes can worsen your chances.  Viruses in the herpes family (simplex I, Cytomegalovirus V, and simplex VI) are strongly suspected of being causal factors.  One theory holds that the microbe Chlamydia pneumonia might be the main agent responsible.  Lyme disease and Helicobacter pylori bacteria also are both associated with Alzheimer’s.  

    A vasectomy might put men at risk for one rare form of dementia, Primary Progressive Aphasia.  

    Vitamin D keeps proving its worth, since low levels of vitamin D have been linked to cognitive decline.  (See also Prevalence of vitamin d insufficiency in patients with Parkinson disease and Alzheimer disease)  

    The inhaled anesthetics halothane and isoflurane are linked with amyloid beta buildup.  Childhood lead exposure could increase the risk.  Processed food that contains nitrates might be linked to Alzheimer’s, diabetes, and Parkinson’s.  Other possibilities include mercury, aluminum, and zinc exposure, non-wine alcohol consumption, and work related organic solvent exposure.

    Although the lines of causation are far from clear, Alzheimer’s correlates with other mental problems.  Being lonely (an active social life is protective), having a history of depression, and having a major psychiatric illness all increase your chances of getting it. 

    Additional correlating factors include:  having poor dental health, being exposed to air pollution,  a history of manual work, a family history of Parkinson’s, maternal age at birth, number of pregnancies, (possibly) exposure to low magnetic fields (Qiu et al, 2004) (Occupations with Exposure to Electromagnetic Fields: A Possible Risk Factor for Alzheimer’s Disease, Do Cell Phones Cause Alzheimer’s? By Maggie Spilner), and age.  There have also been concerns about radon’s radioactive daughter products being found in the brains of Alzheimer’s patients at ten times the normal rate. (Alzheimer’s & Parkinson’s – Could the Cause be Radon?)  

    In addition to the above list, here are some more controllable factors that people have suggested:  

    Exercise has been shown to slow memory loss.

    Dietary restriction and intermittent fasting seem to protect against a large variety of diseases, including Alzheimer’s.  (See also Extreme Diet Nixes Alzheimer’s)  A low carbohydrate and high fat diet has been shown to improve Alzheimer’s disease in mice.  In one study drinking fruit and vegetable juices cut risk by 76%.  The Mediterranean diet also seems to be protective.  Although I haven’t seen any studies on it, given all the lines of evidence I’m pointing out in this blog entry, I feel very confident in predicting that The Paleolithic Diet would be protective.

    Having proper levels of folic acid reduces your risk by 55%, probably at least in part because of its effect on homocysteine levels.  Curcumin, which is found in the spice turmeric, appears to block amyloid plaques.  Many results suggest that the omega-3 fatty acid DHA is beneficial.  Silica in drinking water might help prevent the disease.  (See also Nature’s Way Silica Gel)  Huge doses of vitamin B3 have been found to stop the progression of Alzheimer’s in mice.  Marijuana has anti-inflammatory effects, and it might limit the memory loss part of it.  There is some speculation that Vitamin K2 could be beneficial.  Vitamin C and E consumption, coffee drinking, resveratrol, huperzine A, and wine consumption all might be somewhat protective.  (Since I am a teetotaler I’d consider using a product like Longevinex, which they claim has red wine’s benefits in a pill, without the alcohol or calories.)

    Although it seems a bit extreme to suggest this as a preventive measure, Alzheimer’s does have an inverse association with cancer.  If this is true with those few cancers which are fully curable, and it were possible to somehow induce such a cancer, this suggests an unorthodox treatment option.

    Looking in the doctor’s medicine cabinet, non-steroidal anti-inflammatory drugs, statins, antihypertensives (calcium antagonists), and vaccines for diphtheria, tetanus, polio, and the flue all might be protective.

    Academic ability is a protective factor which probably indicates that you aren’t as susceptible to the disease.  A Canadian study showed that bilingualism delayed the onset of Alzheimer’s by up to four years.  A lack of schooling and farm upbringing seems to boost your risk.  (Of course, the farm environment suggests the possibility of chemical exposure as an additional risk factor.) 

    Researchers are making progress on possible ways to diagnose the disease at earlier stages:

    It turns out that the disease manifests tell-tell signs years before it becomes apparent, and that lower levels of abstract reasoning and recall for verbal materials at a young age are good predictors for Alzheimer’s many years later.  One study, the “Nun Study,” has shown that certain aspects of language usage in young adults are 85%-90% accurate in predicting the disease 50 years later.  The rational for focusing on this population of women was that they lived very similar lives; so many possible confounding variables were eliminated.  Researchers found that linguistic features of the essays these women wrote when they were entering the convent, when analyzed properly, were strongly predictive.  They found that grammatical complexity tells how well a person’s memory is functioning, and “Idea density,” which is the number of discrete ideas per 10 written words, predicts educational level, vocabulary, and general knowledge.  It turns out that idea density at a young age is very predictive of Alzheimer’s in old age.   

    Researchers have found that normally people do better on a memory test if the words to be remembered are semantically related.  But people who later develop Alzheimer’s don’t do any better at such tasks, suggesting that they no longer have access to deeper semantic meanings.  The same scientists have also found that implicit memory tests are good for diagnosing Alzheimer’s in its early stages.  In one test, participants were required to read words from a computer screen as quickly as possible.  For healthy people if a word is repeated they will be primed and perform better.  This effect doesn’t tend to happen with people who will later develop Alzheimer’s, indicating they aren’t learning implicitly (learning without the awareness of learning, or being primed) when they perform a task.   

    Researchers have developed a technique that allows them to image beta amyloid plaques in living mice.  They did this by using a non-toxic compound that binds to the plaques, which is then visible when scanned by using MRI.  It might turn out not be necessary to go to such lengths, because researchers have discovered that beta amyloid proteins also build up in the eye lenses of patients.  It therefor seems likely that a simple eye test will someday be available for the disease.  Some researchers speculate that it might be possible to develop a saliva test which would be able to detect Alzheimer’s.

    As for what medicine might eventually have to offer:

    British scientists claim that an experimental drug called Rember, which attacks the tangles that form during the disease, can reduce Alzheimer’s progression by about 80%.   In a small study, the anti-inflammatory arthritis drug Etanercept demonstrated remarkable benefits in patients.  Researchers are now testing a patch which delivers a vaccine that causes the immune system to break down beta Amyloid proteins.  If used early in the disease, the epilepsy drug Valproic Acid (VPA) has been shown to reverse memory loss, by inhibiting the production of these proteins.  A drug tested in the UK and Singapore, Methylthioninium chloride (MTC), blocks the accumulation of tau tangles inside brain cells, and slows the progress of the disease by 81%.  Dimebon, a Russian antihistamine, which seems to improve the functioning of mitochondria, stabilized Alzheimer’s in an 18 month study.  In Australia they have developed a drug PBT2 that attacks plaques.  Exelon, a cholinesterase inhibitor, seems to delay development of the disorder.  Researchers have found that they can increase the expression in the brain of the protein transthyretin, which seems to halt the progression of the disease.

    Getting further into what sounds like science fiction, there is an experimental helmet which bathes the brain with infra-red light, which it is claimed stimulates the growth of brain cells and could reverse Alzheimer’s symptoms.  Finally, researchers have been experimenting with trepanation, drilling a hole in your head, on the theory that this increases cranial compliance.  This is the elasticity of the brain’s vascular system, and the theory is that increasing this will in turn increase blood flow to the brain. 

    Here is an on-line article by William R. Ware that discusses many of the suspected causes that might be involved, in addition to the ones I have listed, they include: emotional stress, oxidative stress, vitamin deficiency, vitamin b12 deficiency, hypotension, hypertension, alcohol abuse, pesticides, and herbicides, low antioxidant levels, and a tendency for thrombosis.  (See also memory and cholesterol, low levels of cholesterol)  He also reviews the relative risk reduction of a number of drugs currently used to treat Alzheimer’s.  What the more successful drugs seem to have in common is antiangiogenic activity, or the inhibition of new vascularization.  Natural compounds which might have antiangiogenic activity include Omega-6 fatty acids, green tea, licorice, quercetin, squalamine, and shark cartilage.

    Here are two positively reviewed books:  The Alzheimer’s Answer: Reduce Your Risk and Keep Your Brain Healthy by Marwan Sabbagh, which, at 330 pages, covers a lot of material; and Beyond Alzheimer’s: How to Avoid the Modern Epidemic of Dementia (Hardcover) by Scott D. Mendelson (See also: Beyond alzheimer’s – summary)

    Finally, The Myth of Alzheimer’s: What You Aren’t Being Told About Today’s Most Dreaded Diagnosis by Peter J. Whitehouse provides a contrarian view of the disease.