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Category: endocrine disruptors

Published on Leave a comment on Common PFAS Chemical Exposure and Age At Menopause

Does exposure to common PFAS chemicals contribute to an earlier age for menopause? A recent University of Michigan study found an association between blood levels of PFAS (per-and polyfluoroalkyl substances) in women and age at menopause. Women with the highest levels of PFAS in their blood had menopause 2 years earlier than those with lower levels.

PFAS are commonly known as "forever chemicals" because they persist in the environment and in humans. These chemicals have been widely used in many industrial and consumer products, such as non-stick cookware and food packaging, including microwave popcorn bags. They are also endocrine (hormone) disruptors and are thought to have an effect on ovarian aging.

What you can do: Don't microwave food, including popcorn, in the packaging it came in. Use microwave safe dishes instead.  Also, avoid nonstick cookware, and instead use plain stainless steel cookware.

From Science Daily: PFAS exposure may cause early menopause in women

Per- and polyfluoroalkyl substance (PFAS) exposure may cause menopause to occur two years earlier in women, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism.  ...continue reading "Common PFAS Chemical Exposure and Age At Menopause"

Published on Leave a comment on Certain Chemicals Linked to Celiac Disease

Worried about the effects of persistent pesticides, flame retardants, and the chemicals used in non-stick pans (e.g.Teflon) on human health? An interesting small study from researchers at New York University looked at whether there is a link between having higher levels of these chemicals and celiac disease (a digestive disorder in which there is an abnormal response to foods with gluten). And yes, they found one.

Certain pesticides, flame retardants (PBDEs), and nonstick chemicals (PFASs) are known as persistent organic pollutants (POPs). They are known to be endocrine disruptors (meaning they disrupt the hormonal system). The researchers think that because there is an interplay between endocrine and immune systems, then perhaps these chemicals may contribute to the development of celiac disease in people who are genetically susceptible to it.

Thirty children and young adults newly diagnosed with celiac disease were compared to 58 individuals without the disease.  Higher levels of these chemicals were found in the blood in those with celiac disease, when compared to those without celiac disease.

More reasons to avoid non-stick pots and pans, avoid flame retardants, avoid using pesticides on lawns, and to eat organically raised foods.

From Futurity: CELIAC DIAGNOSIS MORE LIKELY WITH HIGHER BLOOD LEVELS OF PESTICIDES

Children and young adults with high blood levels of pesticides—and with high levels of pesticide-related chemicals called dichlorodiphenyldichlorethylenes—were twice as likely to receive a new diagnosis of celiac disease than those without high levels, report researchers.  ...continue reading "Certain Chemicals Linked to Celiac Disease"

Published on Leave a comment on Tips For Reducing Exposures to Harmful Chemicals

Did you know that our modern lifestyle is exposing us to thousands of harmful chemicals? All of us are exposed to many harmful chemicals daily - in ordinary household products, at work and school, in our food, and in the air and water around us. These chemicals are found in plastics, in stain resistant finishes, non-stick cookware, flame retardants, fragrances, pesticides, water resistant finishes, and antimicrobial products.

All these chemicals have made our lives easier in many ways, but they have a dark side. The chemicals leach out of the products and get on us and in us, and can be measured in our blood and urine.

They are linked to all sorts of health problems (reproductive effects, infertility, neurological effects, lower IQs, immunological problems, cancers, etc.) and the list is growing annually. Many are hormone (endocrine) disruptors. Developing children and fetuses are especially vulnerable, and the effects can be life-long.

We all have many of these harmful chemicals in our body. No one can totally avoid all these chemicals, but we can lower our exposure to many of them quite a bit. These chemicals get in us various ways: we ingest them (in food and water), we absorb them through the skin, and we breathe them in (e.g. in household dust and in the air).

Many chemical levels can be reduced quickly - within a few days or weeks (for example, by switching to different personal care products, switching to organic foods, and not eating canned foods).

It is especially important to lower exposures to these harmful chemicals if you are considering conceiving a child, are pregnant, or have children. Many of these chemicals are linked to fertility problems for both men and women, and researchers think this is why male fertility is dropping so rapidly over the past few decades.

Yes, it does require a life-style change, and it does require reading labels, but it is worth it. Following these tips should also have the added bonus of improving your gut microbial communities. It's all related.

HOW TO REDUCE EXPOSURE TO HARMFUL CHEMICALS:

IN GENERAL - Try for a more “natural and non-toxic” lifestyle, and reduce use of plastics (including vinyl) and pesticides.

  • Read labels of personal care products, household products, and clothing. Avoid products with parabens and oxybenzone. Avoid products that are antimicrobial, antibacterial, anti-odor, anti-stain, anti-mildew, and nonstick.
  • Use unscented or fragrance-free products, including personal care products. Avoid fragrances or scented versions of products.
  • Don't use air fresheners, dryer sheets, scented candles, incense, essential oils.

FOOD

  • Buy foods and beverages in glass bottles and jars whenever possible.  Store food in glass, stainless steel, or ceramic containers. Avoid plastic bottles and containers.
  • Avoid canned foods, including aluminum cans - they are all lined with plastics containing BPA or equally bad BPA alternatives. Canned foods are a major source of endocrine disruptors.   ...continue reading "Tips For Reducing Exposures to Harmful Chemicals"

Published on Leave a comment on Flame Retardant Chemicals Have Harmful Effects Before Birth

Please, only buy or use sofas and upholstered chairs that do NOT contain any flame retardant chemicals. Be sure to look at the tags attached to the furniture that are required by a California law since 2015 (called Technical Bulletin 117-2013) to be on each new sofa and upholstered furniture. It will tell you if it contains flame retardant chemicals or not.

This is especially important if at some point you are thinking of having a child, if you are pregnant, or if you have children. The problem is that the flame retardant chemicals, which were added for decades to the foam in upholstered furniture, migrate out and so get into us (through the skin, inhaling, or by swallowing). Unfortunately, almost all of us have flame retardants in our bodies.  Where they can cause health problems.

Two new studies were published recently showing harms from exposures to flame retardants. The first found an association between flame retardant chemicals before birth (when the pregnant woman is exposed, it gets to the developing baby) and later reading problems.

The second study found that exposures to pesticides and flame retardants have overtaken  lead and mercury as leading contributors to IQ loss in children.

The researchers looked at exposure to major groups of endocrine disrupting chemicals during pregnancy and effects on the children. Yes - once again, chemicals frequently found all around us are hormone disruptors, and these chemicals also negatively affect neurological development. One result with higher exposure is that it lowers IQ. The 4 groups are: flame retardants (polybrominated diphenyl ethers or PBDEs), certain pesticides (organophosphates), mercury (methymercury), and lead. Exposures to the first three have the biggest effect during pregnancy (they cross the placenta and so get to the baby).

The researchers found an interesting result: organophosphate pesticide (such as chlorpyrifos) exposure and IQ loss attributed to it has increased since 2003. And that since the EPA did not ban chlorpyrifos (widely used on crops), then organophosphate pesticide "levels will continue to climb in the United States population due to ingestion of chlorpyrifos-treated crops". NOTE: these pesticides are allowed on conventional crops, but NOT organic crops.

How to avoid exposure? Hard to totally avoid exposure to these chemicals, but you can lower your exposure. Eat as many organic foods as possible. Try to avoid buying or having flame retardant sofas, upholstered chairs, and other upholstered furniture in your home. [Note: if they say that they use "safer" replacement chemicals - still avoid that furniture. The replacements are similar chemicals and may be just as bad or worse.] Frequently open windows to "air out" the home.

Excerpts from Science Daily: Prenatal exposure to flame retardants linked to reading problems   ...continue reading "Flame Retardant Chemicals Have Harmful Effects Before Birth"

Published on Leave a comment on Is the Replacement For BPA Even Worse?

Think that BPA-free products are safe? Oops... it doesn't look like it. The most common replacement for the commonly used chemical compound BPA (bisphenol A) is BPS (bisphenol S). But it has become very clear that both are hormone disrupting chemicals with numerous and harmful health effects, especially reproductive disorders.

BPA and BPS are plasticizers used in products all around us, for example in food packaging containers, water bottles, baby bottles, can linings, toys, personal care products, cash receipts, dental sealants and on and on. Because it leaches out of products, BPA has been detected in the urine of nearly every person tested, as well as in breast milk, amniotic fluid, the placenta, and the blood of pregnant women (meaning it's getting to developing babies and causing effects).

Thus the desire for BPA-free products, and why industry has substituted chemically related BPS. But BPA-free doesn't mean it's safe or without problems if BPS or BPSIP (another chemically related substitute) are used. Similar chemicals often cause similar problems, which is what is happening. BPS is also being found in the urine of the great majority of people tested (which means humans are being widely exposed to it).

Research using BPS has been worrying - it actually seems to be worse for health than BPA. The latest research (by University Of Guelph researchers), which was conducted on mice, suggests that BPS has rapid effects (in a negative way) on heart functioning. Within minutes of exposure (at levels comparable to typical human exposure), heart function worsened, especially in female mice.

What can you do to lower exposure to hormone disruptors BPA and BPS? One can't avoid chemicals such as BPA and BPS totally, but you can definitely lower your exposure by taking the following steps (as much as possible). The good news is that BPA and BPS leave the body rapidly - so the goal should be to try to limit new exposure.

SOME STEPS FOR LOWERING EXPOSURE: 1) Assume that a "BPA-free" product is using similar hormone disruptors (such as BPS) and so avoid it. 2) Buy and store food in glass or stainless steel containers (and not in plastic containers). 3) Use ceramic or glass plates in the microwave. Don't use any sort of plastic containers or pouches in the microwave. 4) Use fragrance-free products. Avoid products with fragrances in them, including air fresheners, scented candles, detergents, dryer sheets, and personal care products. 5) Avoid flexible vinyl (e.g. shower curtains - use cloth shower curtains and liners instead), 6) Use glass baby bottles, and 6) Wash hands before eating (everything gets on the hands!).

From Medical Xpress: BPA replacement hinders heart function, study reveals   ...continue reading "Is the Replacement For BPA Even Worse?"

Published on Leave a comment on Pregnancy, Endocrine Disrupting Chemicals, and Lower IQ

The evidence is building, study by study, that we are all exposed to a mixture of hormone disrupting chemicals (endocrine disruptors) on a daily basis, and that these have serious health effects, including on the developing fetus during pregnancy. Researchers found that early prenatal exposure to a mixture of endocrine disrupting chemicals  was associated with lower levels of cognitive functioning (lower IQ scores) at age seven, particularly among boys.

Researchers in New York City and Sweden looked at the impact of 26 endocrine disrupting chemicals during pregnancy on 718 Swedish mother-child pairs. It appeared that the higher the exposure during pregnancy, the more of an effect at age 7. Especially harmful was the BPA replacement chemical BPF - this is because it is chemically related to BPA.

Endocrine disrupting chemicals (EDCs) include bisphenols (BPA and its replacement  chemicals, such as BPF - used in products called "BPA free"), phthalates (especially used in vinyl products), parabens, chemicals used in flame retardants and non-stick coatings,  and some pesticides (e.g. the commonly used chlorpyrifos).

Especially worrisome is that while scientists typically test chemicals one at a time to determine their safety, in the real world we are all exposed to mixtures of these chemicals in our food, consumer products (including personal care products and cosmetics), and environment. Some of these chemicals can cross the placenta during pregnancy and so have an effect on the developing the fetus, including brain and neurological development. Yes, some of these chemicals are only in the body for a short time, but during critical developmental  stages, the effects can be big - even at very low exposures.

Bottom line: If trying to conceive a child or during pregnancy, try to minimize exposure to plastics, pesticides, flame retardants, non-stick cookware, stain-proofing (in fabric and rugs), fragrances and scented products (including air fresheners and dryer sheets), and food stored in cans and plastic containers. Avoid triclosan, anti-odor, antibacterial, anti-germ products and clothing. Avoid parabens (in lotions, etc). Read labels. Glass and stainless steel is perfectly fine. Use unscented or fragrance free products as much as possible.

From Medical Xpress: Chemicals in consumer products during early pregnancy related to lower IQ   ...continue reading "Pregnancy, Endocrine Disrupting Chemicals, and Lower IQ"

Published on Leave a comment on Are You Drinking Tiny Plastic Particles In Your Tea?

Did you know that many tea bags contain plastic or are made totally from plastic? And that tiny pieces of plastic (microplastics) from these teabags are released into the hot water when brewing tea? Canadian researchers found that a single plastic teabag releases about 11.6 billion microplastic and 3.1 billion nanoplastic particles into the water during normal tea brewing. And no one knows what this is doing to us long term, but it is doubtful that ingesting billions of tiny plastic particles in each cup of tea is beneficial to health. View it as an "unknown risk".

The researchers point out that water is frequently at or above 95 degrees C (203 degrees F) when brewing tea, and that "food grade"plastics degrade or leach toxic substances when heated above 40 degrees C (104 degrees F). They tested 4 different commercial teabags in 95 degree C water for 5 minutes. Note: Boiling water is 100 degrees C or 212 degrees Fahrenheit. On the other hand, the researchers noted that few plastic particles were released into room temperature water.

Microplastics are particles ranging from 100 nm to 5mm in size, while nanoparticles are particles ≤ 100 nm in size. The researchers found that many, many more plastic particles were released into the water from the teabags than what has been reported in other foods (e.g. salt or bottled water).

There is another reason to also avoid plastic teabags - if the plastic contains phthalates (endocrine disruptors), it will leach them into the hot water. Which, of course, we are then drinking.

What to do? Just stick with the traditional paper teabags. But you'll have to do research to find one that has zero added plastic. Some bags may appear to be paper, but plastic may be coating the paper, or in the glue sealing sides of the bag. Or drink tea made from loose leaf tea. By the way, any company that advertises its tea bags as "silky", "silken sachets", or "mesh" is using plastic tea bags. There is no silk used. Also, assume that any company that won't tell you if it uses plastic in the tea bags, has plastic in the teabags.

Nowadays many foods come in plastic pouches that are meant to be heated - keep in mind that they probably all leach plastic particles into the food or liquid. If the idea of ingesting multitudes of tiny plastic particles concerns you - avoid heating foods in plastic pouches or containers. Instead, transfer into a glass, stainless steel or iron container for heating.

From Science Daily: Plastic teabags release microscopic particles into tea  ...continue reading "Are You Drinking Tiny Plastic Particles In Your Tea?"

Published on Leave a comment on Why Are We Still Using These Dangerous Substances In Consumer Products?

More bad news about the toxic class of chemicals called PFAS chemicals, which are used in a wide variety of consumer products, such as Teflon non-stick cookware and Scotchgard. The problem is that the chemicals don't stay in the products, but leach out (migrate out) and spread further - even into us. Unfortunately these chemicals persist in the environment. Earlier studies had already detected PFAS  (per- and polyfluoroalkyl substances) chemicals in water, soil, some foods, and in the bodies of almost all Americans. Now some recent research studies and the efforts of investigative journalists have uncovered more disturbing findings about the spread of these chemicals in the environment, in foods, and us.

The site Intercept has done a series of investigative reports highlighting these new findings about PFAS chemicals For example, these chemicals are found in fertilizers that contain sewage sludge (or biosolids) that farmers use on their farms. Farmers have been been doing this for decades. And it's in milk from dairy farms that spread this compost (fertilizer) made from sewage sludge on their fields. Of course! What is spread on the fields gets into food and which humans then ingest. The chemicals are also found in breastmilk from women in every country that has been studied.

Environmental Working Group (EWG) also has a series of articles on these chemicals, including the results of a recent FDA study of foods. The FDA found PFAS in many foods, including meat, seafood, dairy products, sweet potatoes, pineapples, leafy greens, and chocolate cake with icing. But the FDA has not publicly disclosed the results. Why not? Especially since the EPA has already said that "dietary exposure" (what we eat) is a main way that people get these chemicals into their bodies.

Why should we be concerned? PFAS chemicals are called  by some as "persistant chemicals" because of their persistence in the environment and humans. PFAS chemicals are linked to all sorts of serious health risks, including reproductive harm (e.g.poorer semen quality), cancers, lowered sex and growth hormones in children, immune effects,  thyroid disease, liver and kidney damage, and high cholesterol.

PFAS chemicals (such as PFOA, PFOS, PFBS) are used in a wide variety of consumer products because they have stain, water, and grease repellent properties. They are used in nonstick cookware, in food packaging (especially the paper wrappers and cardboard containers), stain-resistant carpets, furniture, floor waxes, textiles, water-proof and stain-resistant clothing (such as Gore-tex fabric), and performance gear. Remember Teflon? That's one. Some have been banned, phased out of use because of their dangers, but the replacements appear to be just as bad. The chemicals migrate out of food packaging into food, or can be released into the air and dust from carpets and upholstery treated with stain-resistant coatings.

I want to point out that sewage sludge (also called biosolids), are found in many commonly available fertilizers, such as Milorganite fertilizer.  It's not just farmers who've been using the stuff for years. Note that organic fertilizers and organic farmers can NOT use sewage sludge (biosolids). It turns out that even compostable food containers contain PFAS chemicals that leach out. Yikes!

What can you do to lower exposure to PFCs? These are chemicals that are hard to totally avoid, but one can lower exposure to them. And some have been phased out. The good news is that research shows that after a while levels in blood and breast milk should drop. What to do?? First of all, don't use non-stick pots and pans, and definitely not older Teflon ones. Use stainless steel or cast iron instead. Avoid the use of non-stick smooth dental floss made with a "non-stick" coating such as Oral-B Glide dental floss (use plain waxed or unwaxed floss instead). Try to not eat prepared foods in coated containers frequently. Avoid Scotchgard or other stain-proofing or stain-resistant treatments on upholstered furniture or rugs. Avoid water-proof treated fabric. It's also best to avoid drinking PFAS-contaminated water (which may be hard to do in places such as NJ where so much of the water supply is contaminated by PFAS chemicals).

From the Intercept - TOXIC PFAS CHEMICALS FOUND IN MAINE FARMS FERTILIZED WITH SEWAGE SLUDGE ...continue reading "Why Are We Still Using These Dangerous Substances In Consumer Products?"

Published on Leave a comment on Male Fertility Is Plunging In Switzerland

Two years ago scientists reported an alarming and steep decline in sperm counts in men from Western industrialized countries over the last 40 years. Both sperm count and sperm concentration declined 50 to 60% in this period in men in North America, Europe, Australia, and New Zealand. Especially concerning was that there was no evidence of this year by year decline leveling off.

What does this mean? As these declines continue, more and more men will have sperm counts below the point at which they can reproduce. Instead they will be infertile or "sub-fertile" (fertilization is unlikely). According to the World Health Organization (WHO), a sperm count of below 15 million per ml makes a man subfertile. However, also of concern is the threshold level associated with a "decreased monthly probability of conception", which is 40 million/ml - which means conception will take significantly longer (due to impaired ability to fertilize an egg).

A recent Univ. of Geneva study looked at semen quality of 2523 young men (aged 18 to 22 years old) who were being drafted into the military in Switzerland. They found that average sperm quality and sperm concentration of the men, who were from all regions of Switzerland, was among the lowest in Europe (along with Germany, Denmark, and Norway).

In Europe, median sperm count ranges from 41 to 67 million per milliliter (ml), depending on the country. The researchers found that the group of Swiss men had a median sperm count of 48 million per ml. And 17 percent of the men had sperm counts below 15 million per ml (thus subfertile). By the way, countries with lower sperm counts and quality, have higher rates of testicular cancer - they go hand in hand.

Also, in a quarter of the Swiss men studied, less than 40 percent of sperm cells were motile (moved normally), and 43 percent of men had less than 4 percent normally formed sperm. Overall, only 38 percent of Swiss men had healthy sperm - that is, with concentration, motility, and morphology (shape, form) that met the WHO’s criteria for healthy sperm.

Why is this happening? The researchers found that of the men with very low sperm concentration, more of their mothers smoked during the pregnancy, which means there could be changes during embryonic development. Also, while this study did not discuss this, many other researchers say that sperm health is "the canary in the mine" for male health - evidence of harm to men from environmental and lifestyle influences. 

These Western developed countries are awash in chemicals and plastics, also with endocrine disruptors (hormone disruptors) in our foods, our personal care products, in products all around us - and so studies find these chemicals in all of us (in varying degrees). Same with flame retardants, pesticides, "scented" products. Exposure to all sorts of environmental pollutants - whether in air, water, soil, our food - such as high levels of aluminum. All of these can have an effect on sperm counts and reproductive health. You can't totally avoid these chemicals, but you can try to lower your amounts of exposure (some tips to lower exposures).

From Medical Xpress: Poor semen quality in Switzerland   ...continue reading "Male Fertility Is Plunging In Switzerland"

Published on Leave a comment on Sunscreen Chemicals Enter the Bloodstream

A recent study found that within hours of applying sunscreen, the chemicals in the sunscreen appear in the person's blood - and at levels high enough to be of concern. Of course the chemicals enter the body! Why is anyone surprised? Generally, assume that what you put or get on your skin enters your body - lotions, pesticides, etc.

The small study was conducted by the Center for Drug Evaluation and Research, which is a part of the US Food and Drug Administration (FDA). Commonly available sunscreens (2 different sprays, a lotion, and a cream) were applied on 24 volunteers according to directions. Within hours the four sunscreen ingredients being studied (avobenzone, oxybenzone, ecamsule and octocrylene) had entered the bloodstream at levels high enough to cause concern.  They also found that the blood concentration of three of the ingredients continued to rise as daily use continued and then remained in the body for at least 24 hours after sunscreen use ended.

The four chemicals studied are among a dozen chemicals that the FDA recently said needed to be researched by manufacturers before they could be considered "generally regarded as safe and effective." Especially worrisome is oxybenzone, which is in 85% of chemically based sunscreens - and has also been found in breast milk, amniotic fluid, urine, and blood. It is an endocrine disruptor, and linked to various health problems. With these chemicals, the more one uses, the more gets into the body - and people may apply sunscreen several times a day. They may also be found in personal care products and cosmetics. But unfortunately, as with so many chemicals that we are exposed to - long-term effects of frequent or chronic exposure are unknown.

The Environmental Working Group (EWG) rates sunscreen chemicals and is an excellent resource in finding safe sunscreens, as well as those that should be avoided. The EWG has a page discussing the problems with these chemicals, including that they are endocrine disruptors. They also have a page on nanoparticles (typically zinc and titanium dioxide), which are also used in sunscreens.ided. The EWG has a page discussing the problems with these chemicals, including that they are endocrine disruptors. They also have a page on nanoparticles (typically zinc and titanium dioxide), which are also used in sunscreens.

...continue reading "Sunscreen Chemicals Enter the Bloodstream"