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Scientists find vinyl plastic chemicals linked to diabetes

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Photo: http://www.healthypeople.gov/2020/topicsobjectives2020/overview.aspx?topicid=8

Two new peer-reviewed studies published over the past few months are calling attention to the potential link between exposure to phthalates and diabetes, a disease that affects 25.8 million Americans or 8.3% of the US population.  Over 90% of all phthalates are used to soften vinyl, such as vinyl school supplies and flooring.

The most recent study, led by researchers at Harvard, found phthalates linked to higher rates of diabetes in women. This comes at a time when the prevalence of diagnosed diabetes doubled from 1980 to 2010 in women.

They found that the diabetes rate was double for women with the highest levels of phthalates in their bodies, even after accounting for sociodemographic, behavioral, and dietary factors.  Phthalates were also linked to higher blood glucose levels and insulin resistance, two common precursors of type 2 diabetes.    In a story published by Environmental Health News, Richard Stahlhut, an environmental health researcher at the University of Rochester Medical Center who co-authored the study, noted:

“These findings are important clues, but it’s only a first step…It’s extremely likely that phthalates and other chemical contaminants will turn out to be a big part of the obesity and diabetes epidemic, but at this point we really don’t know how these chemicals are interacting with each other, or with the human body.”

The story notes that African Americans have a 19 percent chance of developing diabetes – a rate 77 percent higher than that of whites –  and Hispanics have a 66 percent higher rate than whites.  The story also notes that, “Poor women had up to 78 percent higher levels of BBP – the phthalate in vinyl flooring that was associated with a double rate of diabetes –  than women living above poverty level.”

Another study published in April by the American Diabetes Association found that people with higher phthalates in their bodies had about twice the risk of diabetes as those with lower levels.  Another study published last year also found a link between phthalate exposure and diabetes.

Dioxin and Diabetes

Phthalates aren’t the only vinyl chemicals that may be associated with diabetes.

The production and disposal of vinyl plastic, like the roofing and flooring in our children’s schools, is a major source of dioxin. A number of studies published over the years have linked dioxin exposure to diabetes.

For instance, author and scientist Pete Myers published a synopsis of a study a few years ago and stated that,

“A large new epidemiological study in Japan finds that even at background levels of exposure, people with higher levels of dioxin and dioxin-like PCBs are a significantly greater risk to metabolic syndrome, which includes high blood pressure and Type 2 diabetes… Using a method to assess total exposure to this family of chemicals, they found that the people most exposed were over five times more likely to suffer from the health condition.  Looking at some of the chemicals one-at-a-time, they found that some, by themselves, had an even stronger relationship, as high as 8 to 9 times more likely.”

This is of great cause for concern given how widespread this disease is.  Diabetes is a major cause of heart disease and stroke, and is the seventh leading cause of death in the U.S.  It is also the leading cause of kidney failure, nontraumatic lower- limb amputations, and new cases of blindness among adults in the United States.

Over time, I expect the evidence will only continue to mount linking dioxin and phthalates to these and numerous other health problems.

The question is: how much more do we need to know before we act?

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New studies link phthalate exposure to childhood obesity, eczema

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Photo: CDC

In a pair of troubling scientific announcements this week, researchers presented findings suggesting that exposure to phthalates – the common, unlabeled chemical additives found in a wide range of consumer products, including many made of PVC/vinyl – may be linked to eczema and obesity in children. Previous studies have associated phthalate exposure with endocrine disruption and asthma, early puberty in girls, and learning disabilities.

The findings underscore the need to phase phthalates out of consumer products and construction materials like vinyl flooring, especially in schools, where they pose a particular threat to children and teachers of childbearing age. CHEJ’s annual Back to School Guide to PVC-Free School Supplies outlines ways parents can choose safer alternatives for their children.

The obesity study, presented at the Endocrine Society’s annual meeting in Houston by South Korean pediatric endocrinologist Dr. Mi-Jung Par, found that children with the highest levels of the common phthalate di-ethylhexyl phthalate (DEHP) in their blood were nearly five times as likely to be obese as children with the lowest levels.

The eczema study, published in the journal Environmental Health Perspectives by researchers from the Columbia Center for Children’s Environmental Health in New York, found that prenatal exposure to the phthalate butylbenzyl phthalate (BBzP) – commonly found in vinyl flooring – can increase a child’s risk of developing eczema, a skin condition characterized by red, itchy swelling of the skin.  This comes at a time when another study found the very same phthalate can be absorbed into children’s bodies.

The evidence is overwhelming that reducing phthalate exposure, especially among children and womenof child-bearing age, is smart public-health policy and follows the precautionary principle. Click here to learn more about CHEJ’s work to phase PVC, in which over 90% of all phthalates are used, out of the NYC school system.

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Stop The Madness – You're Hurting Our Children

The future of our country will be the hands of our children.  But what does that mean?  We can raise our children with values and ethics and teach the basic lessons of life, encourage learning and education.  Yet our children and our future children are at risk of not being able to lead our country. Our children risk not being able to succeed in business, in society because of the environmental chemicals that they are exposed to every single day.  Chemicals are leaching from the floors that they crawl on as infants, beds that they sleep on nightly or the toys they play with and put into their mouths, all release dangerous chemicals.  What will their future be like?  How can our country grow and prosper or compete in the global economy?

Recently the Center for Disease our federal health agency reported that 1 out of every 88 American children is affected by autism. That is a 78% increase in autism since 2002 and 23% increase since 2006. As if that is not bad enough, the agency also reports that 14% of American children are affected by Attention Deficit Hyperactivity disorder (ADHD).

Of course not all of these problems are the result of chemicals in a child’s environment but a good percentage are.  Looking at the chemicals that are in every day products, ones that are linked to these particular diseases, it is clear society can prevent the harming of children.  PCBs, for example are fond in our environment, in lighting and windows of schools built before 1980.  Lead is found in toys imported from other countries; paint in older building, homes, play grounds and around various industrial sites.  Brominated flame retardants are in mattresses, pillows, clothing and all types of furniture. Also there are Endocrine disruptors like phthalates found in PVC products that are all around us in flooring, toys, pipes, shower curtains and binds.

Not a single one of these chemicals in products are necessary for life or for comfort.  Every one of them can be taken out of children’s environment today.  We know how, and we know where to find and remove these threats.  We are just lacking the political will.

Our politicians need to stop the madness and find the conviction and courage to stand up to Corporate America and say no more . . .”Our children will no longer be sacrificed.”

If I as a parent deliberately, knowing harmed my child I would go to jail, yet in America corporations are above the law and spend huge amount of money to keep their unsafe product from being eliminated in our marketplace and environment.

Just look at the statistics above or the rising cancer incidence in children across the country.  This is an election year where we have a chance to ask the hard questions and vote out of office those that intend to harm our children to protect corporate interests.  Everyone needs to get involved, today, so that we together can reverse the trend and protect our futures. For more information

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Backyard Talk

Early Puberty in Girls – Is There a Connection to Plastics?

Yesterday, the NY Times Magazine ran a fascinating yet disturbing story about a growing trend – young girls going through puberty, way before their time. In the story, the Times explores how early puberty is effecting girls and their families across the country, and what parents, doctors and scientists are doing to address this troubling issue.

Here at CHEJ, we’re particularly interested in the question of whether there is a link between early puberty in girls and exposure to toxic chemicals. The Times Magazine explores this and found:

“In addition, animal studies show that the exposure to some environmental chemicals can cause bodies to mature early. Of particular concern are endocrine-disrupters, like “xeno-estrogens” or estrogen mimics. These compounds behave like steroid hormones and can alter puberty timing.”

The Falling Age of Puberty

A few years ago, ecologist and author Sandra Steingraber authored a noteworthy report for the Breast Cancer Fund, The Falling Age of Puberty, What We Know, What We Need to Know. The report, the first comprehensive review of the literature on the timing of puberty, found:

“Girls today get their first periods, on average, a few months earlier than did girls 40 year ago, but they get their breasts one to two years earlier. Over the course of a few decades, the childhoods of U.S. girls have been significantly shortened.

What does this mean for girls today and their health in the future? We know that early puberty is a known risk factor for breast cancer and other mental and physical health problems. We need to better understand what’s causing early puberty so that we can protect the health of our children now and as they age.”

The role that endocrine disrupting chemicals like dioxin and phthalates may play is very complex. The Advocates Guide to the report, notes that:

“We know that endocrine-disrupting chemicals are a possible cause of early puberty but we also know that exposure to these chemicals in utero or early in life can also lead to low birth weight and obesity, which are themselves possible causes of early puberty.”

The report is a must read for anyone concerned about this pressing public health and social issue.

Early Puberty and Phthalates – Is there a Connection?

While the NY Times story discusses some of the science examining exposure to BPA, not much attention is paid to another endocrine disrupting class of chemicals – phthalates, which have also been linked to early puberty in girls. Over 90% of all phthalates are used in PVC plastic products, like those found in our nation’s schools. Studies have found young girls face some of the highest phthalate exposures.

A landmark study published by researchers from Puerto Rico found:

“Premature breast development (thelarche) is the growth of mammary tissue in girls younger than 8 years of age without other manifestations of puberty. Puerto Rico has the highest known incidence of premature thelarche ever reported. In the last two decades since this serious public health anomaly has been observed, no explanation for this phenomenon has been found. Some organic pollutants, including pesticides and some plasticizers, can disrupt normal sexual development in wildlife, and many of these have been widely used in Puerto Rico… The phthalates that we identified have been classified as endocrine disruptors. This study suggests a possible association between plasticizers with known estrogenic and antiandrogenic activity and the cause of premature breast development in a human female population.”

Another study published in 2009 also found a link between early breast development and phthalate exposure among girls in Taiwan.

While these studies did not find causation, they certainly raise a whole lot of questions about the role phthalates may possibly play in early puberty among girls today.

Other studies have found a link between phthalate exposure and obesity, which is a prime suspect in the early puberty mystery. Dioxins and organotins, both of which are also released by PVC plastics, have also been linked to obesity.

We’ll be sure to be following this issue and the science around it in the months and years to come.

What do you think about this issue, and whether chemicals released by plastics may possibly be a cause?

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Backyard Talk

Study finds risk to children from coal-tar sealants










Children living next to driveways or parking lots coated with coal tar are exposed to significantly higher doses of cancer-causing chemicals than those living near untreated asphalt, according to a study that raises new questions about commonly used pavement sealants.

Researchers from Baylor University and the U.S. Geological Survey also found that children living near areas treated with coal-tar-based sealants ingest twice as many polycyclic aromatic hydrocarbons (PAHs) from contaminated dust tracked into their homes as they do from food.

The peer-reviewed study, and other new research documenting how coal-tar sealants emit high levels of troublesome chemicals into the air, comes as several cities in the Midwest, South and East are trying to ban the products’ use on playgrounds, parking lots and driveways. Some major retailers have pulled the products from their shelves, but coal-tar sealants remain widely available elsewhere.

“There’s been a long-held assumption that diet is the major source of exposure for children,” said Peter Van Metre, a USGS scientist who co-authored the studies. “But it turns out that dust ingestion is a more significant pathway.”

About 85 million gallons of coal-tar-based sealants are sold in the United States every year, mostly east of the Mississippi River, according to industry estimates. The sealants, promoted as a way to extend the life of asphalt and brighten it every few years with a fresh black sheen, are sprayed by contractors or spread by homeowners.

During the past decade, studies have identified coal-tar sealants as a major source of PAHs, toxic chemicals that can cause cancer and other health problems. Pavement sealants made with coal tar can contain as much as 50 percent PAHs by weight, substantially more than alternatives made with asphalt.

Anne LeHuray, executive director of the Pavement Coatings Technology Council, an industry trade group, said she was reviewing the new findings.

“It appears they have some other agenda here, which is to ban coal-tar-based pavement sealants,” she said of the government scientists.

LeHuray and other industry representatives have argued that vehicle exhaust, wood smoke and grilled hamburgers are more significant sources of the toxic chemicals than coal tar.

But the latest USGS research estimates that annual emissions of PAHs from the application of coal-tar-based sealants exceed the amount from vehicle exhaust. Two hours after application, emissions were 30,000 times higher than those from unsealed pavement, one of the new studies found. Parking lots with 3- to 8-year-old sealant released 60 times more PAHs to the air than parking lots without sealant.

By Michael Hawthorne of the Chicago Tribune

The studies are published in the scientific journals Chemosphere, Atmospheric Environment and Environmental Pollution.

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What the Chemical Industry Doesn’t Want You To Know!

The American people will panic if they find out there is dangerous levels of dioxin in their food. That’s the argument the chemical and food industries are using to stop the release of the Environmental Protection Agency’s (EPA) scientific report on dioxin.   Really. . . do they really think people will panic rather than take steps to protect their families?  The American people didn’t panic and not place their children in vehicles when they learned that more kids are injured in auto collisions than in any other type of accident. Parents installed safety seats.

The EPA’s dioxin report has been meticulously peer reviewed and is scientifically sound.  Yet, the power of the corporations that are responsible for dioxin in our environment and food has kept this critical scientific information (over 20 years of study) from reaching the public.  Consequently, the public is unable to make personal decisions about what foods they’ll eat and how best to reduce their families’ risks.

Dioxin, a known cancer causing and endocrine-disruptor chemical, is a byproduct of combustion and various industrial processes and is found everywhere in the environment. Chlorinated dioxins are released into the air and travel great distances landing on fields, pastures and waterways from waste incineration, burning household waste and a variety of industrial processes, including smelting, chlorine paper bleaching, PVC plastics and pesticide manufacturing. When animals graze in the pastures or eat feed that has animal byproducts, they ingest dioxin which is then stored in their fat.  So when little Joey drinks his whole milk, he also ingests dioxin contained in the milk’s fat.

Ninety percent of the public’s body burden of dioxin comes primarily from animal fat in the food supply.  The Environmental Working Group has found that the amount of dioxin a nursing infant ingests daily is up to 77 times higher than the level EPA has proposed to protect the endocrine and immune systems. The fact that both breast milk and infant formula are contaminated with dioxin highlights the urgent need for EPA to release its report.  For cancer risk, the situation is also concerning because the general public is exposed to up to 1,200 times more dioxin than regulatory agencies typically consider safe.

Parents place bike helmets on their children, fasten their seat belts, and take their babies for regular checkups because they understand the risks of not taking these steps.  However, everyone is being kept in the dark when it comes to dioxin in our food.  For example, breast milk contains fairly high levels of dioxin.  Nevertheless breast milk is still the healthiest food for baby.  EPA must release this information to new mothers so they know that nursing is the healthiest option.

Whose protection is our public agencies’ priority?

Recently, there has been an increased lobbying effort by various industries to stop the release of the EPA’s dioxin report. The International Dairy Foods Association, for example, wrote EPA a letter stating, “Animal products, such as milk and dairy foods, have the highest concentrations of dioxins, albeit at levels that are only in the parts-per-million and clearly below levels that have been determined to be unsafe. However, EPA’s proposed values for evaluating dioxin, if translated publicly to a “reference dose,” would scare consumers away from our products, and this would be contrary to the government’s own dietary guidance to consume three servings of low-fat or fat-free dairy each day in order to get essential nutrients found in milk and dairy.”

Releasing the EPA’s dioxin report will help consumers make choices in food products that are low in fat content (as recommended by government’s dietary guidance) and could educate the dairy lobbyists as well since they got it wrong in their letter. Low fat and fat free products are not the big problem, because dioxin is carried into food products through the fat content.

Consumers should call their federal representatives and urge them to support the release of the EPA’s dioxin report so they can make their own decisions about what is safe.  It is time to stop assuming the American people will not understand and give them the scientific information.