BPA -- Here to Stay (In the Environment)
Bisphenol A (BPA) is a chemical used in plastic products we all use, everything from dental resins to household products, canned foods, plastic food containers, and baby bottles. Since the chemical gives plastic products useful properties, its ubiquity means that most of us have traces of it in our bodies -- 93% of populations tested have BPA in their blood. Chemists originally developed BPA as a possible synthetic estrogen so it binds to estrogen receptors, is potent at low doses, and as such it can cause deleterious health effects such as decreased sperm count, enlarged prostate, cancers, diabetes, early puberty, and immunological and developmental effects.
Legislators for the city of San Francisco recently proposed bans on bisphenol A and phthalates, however in the final bill, after the legislators had probably duly considered circumstances such as a lawsuit against the city by bisphenol A manufacturers and toy retailers, as well as sustained lobbying from chemical company lobbies, they removed bisphenol A from the bill. The states of California, Maryland and Minnesota all produced bisphenol A bills that died in process. The America Plastics Council rigorously lobbied against all these bills and is relentless in its efforts to convince the public that there's no scientific evidence to support the dangers of health effects of bisphenol A. In fact, there are hundreds of government sponsored research studies showing health effects of BPA.
Chem Link Love: BPA-->EPA--> FDA--> APC--> RTI--> PPG
Now Congress has taken interest in Bisphenol A. The U.S. House of Representatives and Committee on Energy and Commerce chaired by John D. Dingell (D-MI), and its Subcommittee on Oversight and Investigations, launched an investigation of Bisphenol-A in January. The subcommittee is focusing on BPA found in products made for infants and children like infant formula, where BPA is used in the epoxy liners of cans.
The subcommittee has sent out a series of letters requesting more information about the safety of BPA from the makers of infant formula, the EPA, the FDA, and others, including the consulting firm the Weinberg Group. The manufacturers of infant formulas responded variably that BPA was not found in formula, was found at levels considered safe, and/or BPA epoxy was the only option for lining cans*.
In a letter to the FDA the subcommittee questioned what evidence the FDA used to deem BPA safe, to which the FDA wrote back citing two studies both "sponsored by the American Plastics Council". Both of these studies were done by Research Technologies Inc. (RTI) and scientists have cited problems with at least one of the studies' methodology's. (The president and CEO of RTI Victoria Haynes coincidentally cut her teeth at Monsanto, rising to the post of director of their plastics division. In addition to her RTI post she was an adviser to the Homeland Security Advisory Committee and is a director at several companies, including PPG Industries, a company whose products include epoxy resins for cans as well as *'non-epoxy liners for the European market.')
Government and Industry Consulting, a Lucrative Formula Perhaps?
Last year Acronym Required wrote about Sciences International Inc. (SII), a small consulting firm that was fired for conflicts of interest from its contract running the NIH Center for the Evaluation of Risks to Human Reproduction's (CERHR) assessment of Bisphenol-A's safety for neonates and infants. We wrote that SI's mission included public education, such as publishing their own research on chemical safety in their own scientific journal headed by their own company executives. They cited this as "peer reviewed" research on their website and in white papers perhaps to increase their scientific credibility and assure people of chemicals' low safety risks.
The Sciences International website touted the company's abilities to leverage government contacts for corporate benefit, and their history of producing favorable regulatory outcomes and public opinion. For example SII described their risk analysis work used to influence lower regulatory standards for clean air for the EPA. On one version of their site, SII wrote: "Sciences' methods development work is often sponsored by public agencies, such as the U.S. EPA, while applications work is most often for the private sector where agents of particular concern need to be addressed."
In that post in 2007, Acronym Required wondered about the nature of regulation in Washington when the company NIH chose to assess the safety of BPA for neonates and infants that seemed to be more focused on industry objectives: "[Sciences International scientists]...have applied a biologically-based model approach to coke oven emissions for the industry and derived an alternative cancer potency factor which has been accepted by the EPA. We believe that our ability to utilize accurate dosimetry and pharmacodynamic models in tandem in risk assessments provides unique opportunities to the chemical industry",
Acronym Required is heartened to know Congress is paying attention. Similar to the SII example, the subcommittee explored the marketing website (since removed) of the chemical industry consulting company the Weinberg Group. As per the subcommittee's quotes in their request for more information, the Weinberg site was a virtual rodomontade of feats pulled off by Weinberg on behalf of chemical companies versus government regulatory agencies, all of which seemed to skew scientific integrity in favor of client "results".
The subcommittee sent a letter to the Weinberg Group asking about a series of case studies that included verbiage about various projects, such as swaying an FDA decision on a drug with "life-threatening adverse events", and being "at the forefront" of public relations addressing endocrine disrupting chemicals "leaching from food containers", and contained in "children's toys". (the latter sounding a lot like bisphenol A.)
The subcommittee requested information on details of another letter from the Weinberg Group to DuPont de Nemours referring to their work on the chemical perfluorooctanoic acid (PFOA), a carcinogenic chemical used to manufacture Teflon. Weinberg says they produced scientific papers on "PFOA, junk science and the limits of medical monitoring", handled scientific testimony and expert witnesses for court cases, and "[reshaped] 'the debate by....analyzing existing data, and/or constructing a study to establish not only that PFOA is safe over a range of serum concentration levels, but that it offers real health benefits.'" PFOA Dupont has been fined by the EPA and sued for its PFOA activities including suppression of safety information for 20 years.
The committee has now widened its scope beyond BPA. Their letter to the EPA's Stephen Johnson requested information about the dismissal of Dr. Deborah Rice as the chair of an external review panel that was investigating a type of polybrominated dephenyl ether (PBDE), decabromobiphenyl ether (deca) used as a flame retardant. Rice's sacking followed a letter the EPA received from the American Chemistry Council (ACC) complaining that she had testified for the State of Maine on the dangers of deca. The ACC called her expertise a "conflict of interest". The subcommittee's letter challenged the EPA's firing and included 9 incidences of people from industry who testified on various EPA chemical safety panels despite real conflicts with obvious pecuniary connections in the chemical industry.
It will be interesting to see where this goes beyond the obvious -- subcommittee members burnish their environmental credentials while giving companies serving both government and chemical industries another lesson on the pitfalls of producing zealous marketing material for the company websites. We remain optimistic that the inquiry will produce results and anyway, the public outing of information is always useful. Happy belated Sunshine Week.
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Acronym Required wrote about bisphenol A in the following posts:
"Phthalates and Bisphenol A: Media and Politics" (November, 2007)
Plastic Bottles- Protecting Your Baby, by the ACC (July, 2005)
"Bisphenol-A and Phthalates Bill in California" (January, 2006)
"San Francisco Bans Bisphenol A, Phthalates" (July, 2006)
"San Francisco Phthalates & Bisphenol A Ban" (November, 2006)
"Sports Retailers Stop Selling Polycarbonate Bottles" (December, 2007)
We wrote about PFOC in these posts:
"PFOC: Likely Carcinogen" (January, 2006)
"Dupont, The Teflon Company" (December, 2005)
"Slick Company Stands behind Teflon"(July, 2005)
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