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When ‘Safer’ isn’t Safe: BPA and BPS

Two weeks ago on Backyard Talk, I wrote about BPA, a major plastic component that has been linked to number of health impacts, particularly endocrine disruption. The jury is still out on BPA; the European Food Safety Authority has declared that BPA does not pose a health risk at normal exposure levels, while recent studies have emerged showing that BPA affects stem cells and may impact reproductive health later in life. In the face of all this scientific uncertainty, it’s lucky that we have access to BPA-free products. Or is it?

I have a few new water bottles from Christmas sitting in my cabinet, stamped with a leaf design and a guarantee that their plastic is BPA-free. Our eco- and health-conscious readers probably have similar items in their homes. BPA-free products have proliferated since the U.S. Food and Drug Administration banned the sale of baby bottles containing BPA in 2012. Unfortunately, studies over the past few years have shown that even BPA-free products release estrogenic compounds, some of which can even be more potent than those released by BPA-containing products.

One common replacement for BPA, or bisphenol A, is BPS, or bisphenol S, which has been shown to disrupt cell functioning at very tiny concentrations. It’s no surprise that the compounds might have similar effects, because they are close in structure as well as in name. A brief organic chemistry interlude:




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Image from the blog ‘Science Minus Details.




To the right is an image of BPA side-by-side with a particular estrogen, estradiol.

This image highlights the structural similarities between BPA and estradiol, which enable BPA to mimic the hormone and cause disruptions to the endocrine system.

Below is the structure of BPS:




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BPS molecule









Though the two molecules are not identical, BPS contains the essential ring structure, called a ‘phenol’ group, which is highlighted in both BPA and estradiol. Structural similarity between BPA and BPS is what enables them to play a similar role in conferring hardness to plastics. It also enables them to interact with cells in similar ways. According to Scientific American, BPS is thought to be more resistant than BPA to escaping from plastics when they are heated. However, studies have demonstrated that it is prevalent in human urine, and that even small amounts can cause changes to cells.

We are caught between a rock and a hard place when it comes to developing safe, or safer, alternatives to chemicals that have been linked to adverse health or environmental impacts. When replacing chemicals in products, we often first look to chemicals that share properties with the ones we are seeking to eliminate. As in the case of BPA, however, these similarities that preserve the function of a product can also preserve its toxic effects. When health risks are demonstrated for a given compound, is it prudent to bring in a replacement, even if this new player has not been vetted by scientific studies? Should we settle for lesser risk and continue working towards an even safer ideal? What does ‘safe’ mean, anyway? Tune in next time!

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The Circle of Poverty and Poison

This past month I’ve spent time with several grassroots organizations fighting to protect their families from environmental chemical threats. In each case I was reminded of how impossible it is for parents, with dreams of a bright successful future for their children, to achieve their goals while living in the circle of poison and poverty.

Many parents in low wealth communities, tell the story of how they work hard to support their children in school. Moms and dads make sure their homework is done, provide the healthiest breakfast and lunch they can afford and attend as many meeting and events that time allows. They want their children to succeed in school, to learn the skills needed to later secure a job that will bring them a better life.

Yet, no matter how hard parents try they often can’t stop the environmental poisons in the air, water or land. As the children leave for school the toxic air triggers an asthma attack. A parent must lose a day of work, daily earnings, and take the child to the hospital or care for the child at home. When a child is exposed to other environmental chemicals, or maybe even the same ones that cause the asthma, they can suffer from various forms of central nervous system irritants that cause hyperactive behaviors, loss of IQ point or a host of other problems that interfere with learning potential.

The end result is the child becomes frustrated because s/he can’t keep up with what is required at school because of being sick or unable to focus and often drops out of school. That child and the parent’s dreams disappear. A healthy baby, poisoned for years from environmental chemicals, life is forever altered. Often unable to earn enough money to ever leave the poisoned community, possibly even raising their own families in that same neighborhood, continues another generation within the circle of poverty and poison.

America’s environmental protection agencies are responsible for a healthy environment. As we all know the agencies fail often and even more frequently in low wealth communities. In my conversations with leaders in such areas I hear over and over again, parents saying we had so much hope for our child but the chemicals destroyed that hope. Our family can’t afford to move and our children can’t succeed if we stay and they are poisoned. What are families supposed to do?  I can’t answer that question, except to say keep speaking up and out. Can you answer parent’s cries for a solution?

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SAN Trimer: The hidden killer behind the Reich Farm Superfund Site

Styrene-acrylonitrile trimer. It sounds like some sort of noxious mega-rocket fuel that Wile E. Coyote used to power his Acme rockets as he tried to take the Roadrunner down. Turns out styrene-acrylonitrile trimer, or SAN trimer for short, is not so far from being just that as the residents of Toms River, NJ painfully and tragically found out.

SAN trimer is a compound set of similar semi-volatile chemicals that are formed during the production of acrylonitrile styrene plastics. This compound is relatively new to modern toxicology, having been studied in depth only within the past decade and a half. As a result, its toxicological properties remain poorly understood – and the residents of Toms River and its surrounding areas paid the price for our lack of understanding and, most importantly, our carelessness.

In 1971 a waste hauler working for Union Carbide improperly disposed of drums containing toxic solvents on a section of the three-acre Reich Farm property in Toms River leading to massive soil and groundwater contamination with volatile organic compounds such as trichloroethylene (TCE) and perchloroethylene (PCE). Consequently, the New Jersey Department of Environmental Protection and USEPA worked to address the site’s contamination, introducing it into the National Priorities List in 1983, developing a cleanup plan in 1988 and culminating the soil portion in 1995 (groundwater treatment was ongoing).

However, the SAN trimer lay hidden in the groundwater undisturbed by the treatment system – silently eating away at the health of the local residents. In 1996, significantly elevated rates of certain childhood cancers were found in the Toms River area. A staggering total of 90 cases of childhood cancer were reported from 1979-1995. New Jersey authorities were baffled by this and frantically looked for possible causes. Finally, with the help of the U.S. Agency for Toxic Substances and Disease Registry, they found a possible culprit as high concentrations of the SAN trimer in groundwater surrounding the Reich Farm Superfund Site were detected. Despite having practically zero understanding of the toxicity of SAN trimer, this find led to an update in the groundwater treatment system designed to remove the SAN trimer. Simultaneously, the National Toxicology Program was asked to conduct studies on the SAN Trimer to determine its health effects, and they completed their review in 2012.

The results concluded that the SAN trimer has potential to cause peripheral nerve degeneration, bone marrow hyperplasia and urinary bladder hyperplasia, while also concluding that it has no carcinogenic effects. However, the study consisted of 7 week, 18 week, and 2 year reviews of rats exposed to the SAN trimer as well as bacterial assays. These studies were quite limited and simply underscore our incomplete knowledge of SAN trimer toxicity. Furthermore, although not statistically significant, dose-related increases in DNA damage in brain and liver cells of test rats were observed pointing the way towards a possible association with cancer.

What is clear is that the SAN trimer is one of many new chemicals whose toxicity we simply do not understand. The reality is that it was present for nearly 20 years at the Reich Farm Superfund Site, and it ate up the lives of the children living there. Now, over 35 years since the site became contaminated, EPA held a public meeting in Toms River last Friday to explain how the SAN trimer is not responsible for the cancer cluster that devoured so many lives. And what are they basing this assessment on? On the lie they tell themselves and the rest of the public – that we understand how the SAN trimer works on our bodies, and that this hidden killer is not responsible for ruining 90 lives.

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Health Effects of Fracking – New Evidence

The evidence linking adverse health effects and exposure to chemicals generated during the natural gas extraction process of hydraulic fracturing (also known as fracking) continues to mount. The latest evidence, published in the journal Environmental Health Perspectives, found that people living near natural gas wells may be at increased risk for adverse health impacts including respiratory and skin conditions. The study examined nearly 500 people in 180 households in Washington County, PA, home to some of the most intense fracking activities in the U.S. The authors found that residents who lived less than a kilometer (about 2/3 of a mile) from a gas well reported more adverse health symptoms than residents who lived more than 2 kilometers from a gas well (about a mile and a third). Residents living less than a kilometer from a gas well were also more likely to report skin conditions during the past year as well as upper respiratory symptoms. The effects did not go away when adjusted for potential confounding variables including age, cigarette smoking, education level and occupation. The study did not find an association between proximity to a natural gas well and increased cardiac, neurological or gastrointestinal symptoms. According to the author, this study is the largest to examine general health conditions among people living near fracking sites.

Researchers from Yale University, the University of Washington and Colorado State University collected their data by going door-to-door and asking people to participate in a general health study. The authors followed the study participants for two years from 2012 to 2014. They did not tell people that the study was looking at the adverse health effects of fracking. The authors hoped this approach would reduce the potential for bias in people reporting the results. There are plans for an even longer term study.

The authors concluded that “airborne irritant exposures related to natural gas extraction activities could be playing a role. Such irritant exposures could result from a number of activities related to natural gas drilling, including flaring of gas wells and exhaust from diesel equipment.” According to the authors, the results underscores the need for ongoing health monitoring of people living near natural gas extraction activities in order to better understand the potential health risks. “We’re at a stage in which we know enough to recommend prudent precaution and exposure reduction,” stated Peter Rabinowitz, one of the co-authors, from the University of Washington.

To read the full paper, click here.

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Ohio Govenor Kills Green Energy & NYS Invests

It was only a short while ago when the Ohio Legislature essential killed all efforts to bring clean green energy and energy use reduction to the state. Ohio Gov. John Kasich dashed the hopes of environmentalists, leading manufacturers and renewable-energy businesses in June when he signed a bill shelving requirements for utilities to ramp up the use of renewable energy and energy efficiency. Kasich welcomes fracking and other nasty industrial processes to his state while other states are taking a more proactive and protective direction.

Recently, New York Governor Cuomo announced a ban on fracking in NY sighting the many unknown health issues that  have not been addressed and the potential impacts are too great to allow fracking to proceed in the state at this time.

Acting Health Commissioner Dr. Howard Zucker said that in other states where fracking is already happening, he found that state health commissioners “weren’t even at the table” when decisions about the process were made.

Zucker add “I cannot support high-volume hydraulic fracturing in the great state of New York,” also noting that he would not live in a community that allows fracking and would not want his children to play in the soil in such a place.

We give the Governor of NY an A+ for his due diligence in protecting the citizens of NY and the Governor of Ohio a big fat red letter F for his lack of caring or concern for the residents of his state.


This January 2015 NYS Governor began pushing for investments in clean green energy.

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For BPA, Does the Dose Make the Poison?

For those who keep up with environmental health research and chemical regulations, it is no surprise to come across conflicting reports on the safety or risk of various compounds. This week, in the case of the compound bisphenol A (BPA), these conflicting reports happened to emerge almost simultaneously. On January 21st, the European Food Safety Authority declared that BPA “poses no health risk to consumers of any age group…at current exposure levels.” The next day, a study published in the journal PLoS Genetics showed that even low and short-term exposures to BPA and other hormone-mimicking compounds could alter stem cells and lead to lower sperm counts.

BPA is a common ingredient in plastics used for food and drink containers. Its hormone-like properties allow it to disrupt the endocrine system, with potential health effects ranging from reproductive issues to cancer. Though BPA has been banned in baby bottles in the U.S., and BPA-free products have become widely available since concerns about the compound were first raised in 2008, it remains in products from water bottles to the inside coatings of cans.

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David McNew via Getty Images

‘The dose makes the poison’ is a well-known adage in toxicology, implying that even hazardous chemicals can be harmless at low enough concentrations. However, decades of research have shown this to be an overly simplistic way of analyzing toxic exposures.  Dr. Theo Colborn, who passed away on December 14th, 2014, was a pioneering researcher in the field of endocrine disruption and a tireless advocate for precautionary chemical regulation. Her research on endocrine disruption demonstrated that even very low concentrations of harmful chemicals could result in changes to the reproductive system, particularly in developing babies and children who have less of a tolerance for exposure than adults. She also demonstrated that not all effects of toxic chemicals are immediately apparent, but can occur decades and even generations later.

The study published last week focused on both questions of concentration and timing. The researchers tested estrogenic compounds including BPA on mice, and found that they alter the stem cells, or undifferentiated cells, which are responsible for sperm production later in life. Patricia Hunt, the researcher who led the study, told Environmental Health News that exposure to even low doses of estrogens “is not simply affecting sperm being produced now, but impacting the stem cell population, and that will affect sperm produced throughout the lifetime.”

Uncertainties remain in the wake of this study. For instance, the researchers are still investigating whether the changes observed can cross generations, or whether the same changes can occur in human reproductive stem cells. The EFSA also recognized uncertainties in non-dietary sources of BPA, and they are still conducting long-term studies in rats. While scientists and regulators continue to chase answers, this past week shines a spotlight on the complicated realm of environmental health risk assessment, and shows the continued relevance of Dr. Theo Colborn’s work and legacy. Dose is indeed important in making a poison, but so is timing of exposure, and time itself in revealing the chronic and transgenerational effects of chemicals.

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Demand What You Want-Not What’s “Feasible”

Truer words have never been spoken. In CHEJ’s recent training on Lessons Learned from New York State, which recently banned fracking until it can be proven safe, Eric Weltman from Food and Water Watch told the group to demand what you want not what is feasible.

I find it frustrating and a bit troubling when I visit communities who are struggling to protect their health and environment from environmental threats and they ask for less than they deserve and need. When I ask leaders, “why short change themselves,” they often respond saying they don’t want to sound unreasonable or worse because their opponents said it’s too expensive. Leaders and community members are often bullied into believing that they must take less or they won’t get anything. This is just not true.

At Love Canal in 1978, our community was told that government does not evacuate families and purchase homes because of toxic pollution. If we didn’t stick to our goal we would never had been evacuated. When the environmental health and justice movement demanded that no more commercial landfills be built, we were all told it must go somewhere. Several years later up until today no new commercial hazardous wastes landfills have been built, although it is still legal to do so.

In one of CHEJ’s consumer campaigns around a multinational corporation, we were demanding they take certain products off their shelves. The corporations response was, we won’t be bullied by radical environmental group. Yet a short time later they did exactly what we and consumers across the country asked.

No one should ask or accept as the final decision, what is not right and fair. However, winning the big ask is more difficult and demands serious discipline. Everyone needs to be on the same page and demand the same goal. Yes, there are always those few who will say out loud and even in the media that they would be wiling to accept less. Yet if the loud vocal people, the base of the majority, the framers of the campaign stick with their larger goal for justice, they will dominate the campaign. Those with smaller goals will be essential drowned out by the voices and actions of this  larger group.

This was the case in New York State around fracking. There were good people who would have accepted better regulations or only drilling in certain parts of the state. In every issue those working from various groups often have different goals. Sometimes their efforts help build toward the larger goal and other times they may be an irritation. The key to win it all is to build larger stronger, more visible opposition and demand for the larger goals. In this way you can win your goals without publicly fighting with others.

As Eric told us, “we were relentless. With op-eds, press events, using the public participation/comment period to submit a hundred thousands of “comments” that said Ban Fracking Now –not detailed line by line comments about regulations that were proposed. Hundreds of groups participated in bird dogging the governor who couldn’t go anywhere without a group, small or large in his face demanding he ban fracking.”

Secondly, Eric was clear that you need a single target, in NYS it was the governor. “You need to find the person who has the power to give you what you are demanding,” he said. I would add that it always needs to be a person not an entity, like regulatory agency or corporation. You need a human face on your opponent and your messengers to make it all work.

This is a time tested strategy and if you follow it you are more likely to receive a higher level of justice not a compromising solution.

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President Obama Holds the Power to Protect America from Keystone

In the first week of 2015, President Obama sent a clear message to the new Republican congress that he intends to stand firm in his commitment to uphold the health of environment and the American public. White House Press Secretary Josh Earnest said on January 6 in a public statement that president Obama would veto any effort to move forward with the proposed Keystone XL Pipeline Act. Now, after the Keystone Act was passed in the House and is scheduled for a vote in the Senate, we hope that the President will stand firm by his promise.

This Keystone XL Pipeline Act is an effort that pushes for the completion of a pipeline that would transport oil tar sands from the Canadian province of Alberta, through Montana and South Dakota, and into Nebraska. Republican leads have been pushing for the Keystone pipeline since 2008, with a virtually identical bill failing to make it through the Senate as recently as last November. However, with the newly shaped senate in place and an already approved vote of 266-153 in the House of Representatives, the President faces a tough task in keeping the pipeline from harming the health of millions of Americans.

The concerns surrounding the Keystone pipeline are staggering. Firstly, the type of oil being mined and moved, oil sand tar, produces as much as 22% more carbon emissions than other fuels according to a Stanford University study commissioned by the EU in 2011. Secondly, the potential for a spill is highly likely, as is evidenced by the previous A tar sand spill in Mayflower AR, and could contaminate drinking water and agricultural land with toxic chemicals as the Environmental Working Group’s Poisons in the Pipeline investigation revealed.

Now that the Keystone Act is in the Senate floor and multiple amendments that would mitigate the pipeline’s destructive effects are being shot down by the Republican majority, the President’s resolution will be tested to its fullest. Although the Act has every chance of making it through the Senate, the president still hold the ultimate say. His veto power may be the only thing that stands to protect the American public from the unthinkable harms that the Keystone Pipeline would bring.

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Commemorating Dr. Martin Luther King, Jr.

Martin Luther King Jr. left many legacies – as a crusader for civil rights, voting rights, religious harmony, peace and economic justice. As we reflect on his legacy, I was struck by a story written by Eugene Robinson in the Washington Post that talked about how “timeless” King’s economic message was (“to our society’s great shame”) and how much further we still have to go.

In the weeks before his death, King was preparing for a march on Washington as part of the Poor People’s Campaign, and he formulated a speech called “The Other America.” Although not as well known as King’s “I Have a Dream” speech, there’s much that still rings true in this speech five decade later. Robinson quotes King’s speech given in New York City in March 1968:

“One America is flowing with the milk of prosperity and the honey of equality. That America is the habitat of millions of people who have food and material necessities for their bodies, culture and education for their minds, freedom and human dignity for their spirits … But as we assemble here tonight, I’m sure that each of us is painfully aware of the fact that there is another America, and that other America has daily ugliness about it that transforms the buoyancy of hope into the fatigue of despair. In that other America millions of people find themselves forced to live in inadequate substandard housing, and often dilapidated housing conditions…

“In this other America, thousands of young people are deprived of an opportunity to get an adequate education … because the schools are so inadequate, so over-crowded, so devoid of quality, so segregated if you will, that the best in these minds can never come out.

According to Robinson, the problem was structural as he quoted King further: “This country has socialism for the rich, rugged individualism for the poor.”

Robinson states that King continued this theme eight days later when he addressed striking sanitation workers in Memphis: “Do you know that most of the poor people in our country are working every day? They are making wages so low that they cannot begin to function in the mainstream of the economic life of our nation. These are the facts which must be seen, and it is criminal to have people working on a full-time basis and full-time job getting part-time income.”

According to Robinson, King explained the shift in his focus:

“Now our struggle is for genuine economic equality, which means economic equality. For we know that it isn’t enough to integrate lunch counters. What does it profit a man to be able to eat at an integrated lunch counter if he doesn’t earn enough money to buy a hamburger and a cup of coffee?“

Robinson concludes with “What King saw in 1968 – and what we all should recognize today – is that it is useless to try to address race without also taking on the larger issue of inequality.”

To read the Robinson’s article in full, go to

http://www.washingtonpost.com/opinions/eugene-robinson-mlks-call-for-economic-justice/2015/01/15/3599cb70-9cfe-11e4-96cc-e858eba91ced_story.html

To read King’s Other America speech in full, go to http://www.gphistorical.org/mlk/mlkspeech/mlk-gp-speech.pdf


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Former DNR Official Issues Open Letter About Handling of Burning Bridgeton Landfill

A former official with the Missouri Department of Natural Resources writes a sizzling farewell letter about the burning Bridgeton landfill. He has issued an open letter claiming politics – not science – is dominating the state’s handling of the landfill crisis. Norris says within the DNR, scientists are “losing their minds because they are fighting their own management structure,” which seems more concerned with politics than public safety. He says there is “an overall cozy relationship between the landfill owner and the DNR.” Read more.