(Beyond Pesticides, December 7, 2010) Last week, Federal District Judge Jeffrey S. White issued a preliminary injunction ordering the immediate destruction of hundreds of acres of genetically engineered (GE) sugar beet seedlings planted in September after finding the seedlings had been planted in violation of federal law. The ruling comes in a lawsuit filed by Earthjustice and CFS on behalf of a coalition of farmers and conservation groups. The lawsuit was filed on September 9, shortly after the U.S. Department of Agriculture (USDA) revealed it had allowed the seedlings to be planted. The court outlined the many ways in which GE sugar beets could harm the environment and consumers, noting that containment efforts were insufficient and past contamination incidents were “too numerous” to allow the illegal crop to remain in the ground. In his court order, Judge White noted, “Farmers and consumers would likely suffer harm from cross-contamination” between GE sugar beets and non-GE crops. He continued, “The legality of Defendants’ conduct does not even appear to be a close question,” noting that the government and Monsanto had tried to circumvent his prior ruling which made GE sugar beets illegal. Paul Achitoff of Earthjustice, lead counsel for the plaintiffs, said, […]

(Beyond Pesticides, December 6, 2010) A new study finds that exposure to dioxin in the womb can affect female reproduction for generations, reducing fertility and increasing the chance for premature delivery. Scientists from the Women’s Reproductive Health Research Center at Vanderbilt University School of Medicine examined the effects of a specific variety of dioxin on female mice and found that subsequent generations of the mice exposed to dioxin are at risk. The study, entitled “Developmental exposure to TCDD reduces fertility and negatively affects pregnancy outcomes across multiple generations,” was published in the journal Reproductive Toxicology. Dioxin refers to a family of chemicals linked to cancer, endocrine disruption, weakened immune systems and reproductive problems. They are persistent organic pollutants that bioaccumulate in humans and other animals, especially in fatty tissue, meaning that concentrations of dioxin in the body generally increase with age. So, even in very low doses, dioxins can cause health problems. Scientists in this study specifically looked at the variety of dioxin that is considered the most toxic, known as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). TCDD is a well-known contaminant of the herbicide 2,4-D, which was originally a part of the deadly chemical weapon Agent Orange. As such, TCDD is still found […]

(Beyond Pesticides, December 3, 2010) Ignoring the assessments of top U.S. scientists and its own Scientific Review Committee, the California Department of Pesticide Regulation (DPR) announced its approval on December 1, 2010 for use of methyl iodide, a potent carcinogen and water contaminant, as a fumigant in the state’s strawberry fields, nut orchards, and flower farms. The news comes one day after press events in eight California cities urging DPR to deny its approval, and after Washington State decided to not allow use of the chemical.”¨ Methyl iodide poses great risk to farmworkers and those who live near fields where it will be applied as well as to air and waterways, should it escape into the surrounding environment. It is on California’s official list of known carcinogenic chemicals and has been linked to serious risks in reproductive and neurological health. A coalition of farmworker, farm, public health and environmental groups is calling on the administration of governor-elect Jerry Brown to work with his agency staff to undo this approval, and deny the use of methyl iodide in California. Specifically, the groups call on Brown to: ”¢ Follow the recommendation of John Froines, PhD, Chair of the Scientific Review Committee, to […]

(Beyond Pesticides, December 2, 2010) The U.S. Environmental Protection Agency (EPA) just announced that it is seeking public comment until December 15 on a draft stipulation in U.S. District Court for the Southern District of New York that will suspend further litigation with the Natural Resources Defense Council (NRDC) and Pesticide Action Network North America (PANNA) on the claim that EPA has unreasonably delayed its response to their 2007 petition to cancel all uses and revoke all tolerances for the pesticide chlorpyrifos. Under the draft Stipulation and Order, the case will be suspended, provided (1) EPA issues a preliminary human health risk assessment for chlorpyrifos by June 1, 2011, and requests comment on that assessment; and (2) EPA sends NRDC and PANNA a written response to their petition by November 23, 2011. If the lawsuit is not reactivated by January 23, 2012, it will be dismissed. In September 2007, the Natural Resources Defense Council (NRDC) and Pesticide Action Network North America (PANNA) filed a petition with EPA asking the agency to ban chlorpyrifos. In the nearly three years since, the agency has not responded. This spurred the groups to file a lawsuit in federal court to force EPA to decide […]

(Beyond Pesticides, December 1, 2010) Several fishing and environmental conservation groups are suing the U.S. Environmental Protection Agency (EPA) for failing to limit the use of six agricultural pesticides to protect salmon. Restrictions on the use of six pesticides in Oregon, Washington and California shown to harm endangered salmon and steelhead, were ordered after a court found that EPA violated the Endangered Species Act (ESA) by failing to restrict the pesticides from entering salmon habitat. However EPA has failed to act to restrict the pesticides. The lawsuit, filed in U.S. District Court in Washington is the fourth lawsuit the plainstiffs -Northwest Coalition for Alternatives to Pesticides, Pacific Coast Federation of Fishermen’s Associations; Institute for Fisheries Resources and Defenders of Wildlife- brought against the EPA to restrict the pesticides diazinon, malathion, chlorpyrifos, carbaryl, carbofuran and methomyl in streams of endangered salmon and steelhead. The plaintiffs seek a judgment declaring that EPA’s failure to implement the organophosphate (OP) and carbamate biological opinions issued by the National Marine Fisheries Service (NMFS) violates the ESA, and a judgment declaring that EPA is taking listed salmonids in violation of the ESA. The lawsuit seeks an order vacating and enjoining EPA’s authorization of the uses of […]

(Beyond Pesticides, November 30, 2010) Young people who are overexposed to antibacterial soaps containing triclosan may suffer more allergies, and exposure to higher levels of Bisphenol A among adults may negatively influence the immune system, a new University of Michigan School of Public Health study finds. Triclosan is a chemical compound widely used in products such as antibacterial soaps, toothpaste, pens, diaper bags and medical devices. Bisphenol A (BPA) is found in many plastics and, for example, as a protective lining in food cans. Both of these chemicals are in a class of environmental toxicants called endocrine-disrupting compounds (EDCs), which are believed to negatively impact human health by mimicking or affecting hormones. Using data from the 2003-2006 National Health and Nutrition Examination Survey (NHANES), U-M researchers compared urinary BPA and triclosan with cytomegalovirus (CMV) antibody levels and diagnosis of allergies or hay fever in a sample of U.S. adults and children over age 6. Allergy and hay fever diagnosis and CMV antibodies were used as two separate markers of immune alterations. The study, “The Impact of Bisphenol A and Triclosan on Immune Parameters in the US Population, NHANES 2003-2006,” was published online November 30, 2010 in the journal Environmental Health […]

(Beyond Pesticides, November 22, 2010) The British Beekeepers’ Association (BBKA) last week announced plans to end its controversial practice of endorsing pesticides for financial benefit from leading chemical manufacturers. The endorsement of four products as “bee-friendly” caused outrage among many beekeepers because one of the companies, Bayer Crop Science, makes pesticides like imidacloprid, an insecticide widely implicated in the deaths of honeybees worldwide. The 135-year-old charity endorsed pesticides used to combat the varroa mite that is linked to the collapse of colonies as “bee-friendly.” In return, for the past 12 years the association has received £17,500 ($27,949) a year from Bayer Crop Sciences and Syngenta. This relationship angered many members and some left the association. However, the BBKA denies that it has bowed to pressure from members who have been increasingly critical of its relationship with Bayer and other chemical companies. In a statement sent out this week to the secretaries of local beekeeping associations across the UK, the BBKA’s president, Martin Smith, said: “Following discussion with the companies involved, the BBKA trustees have decided that endorsement and related product-specific payments will cease as soon as practically possible.” He added: “The four products subject to BBKA endorsement are of declining […]

(Beyond Pesticides, November 19, 2010) House Rules Committee Chairwoman Louise M. Slaughter and two colleagues asked the U.S. Food and Drug Administration (FDA) to ban triclosan due to the hazards that this chemical poses, including antibiotic resistance and potentially leading to higher health care costs, citing both Beyond Pesticides and Food and Water Watch along with other environmental groups. Rep. Slaughter, joined by Reps. Raul Grijalva and Betty McCollum, delivered the letter Tuesday, November 16, urging FDA to take immediate steps to stop the unnecessary exposure to this chemical in the U.S. Rep. Slaughter concludes that “triclosan is clearly a threat to our health.” Among the reasons for her conclusion, she lists: ”¢ The presence of triclosan in the human body and its impact on our “body burden;” ”¢ Bacterial resistance to antibiotic medications and antibacterial cleaners; ”¢ The potential for endocrine disruption as a result of triclosan bioaccumulation in the body; ”¢ Wastewater contamination; ”¢ The threat of destroying ecological balance, and; ”¢ The fact that triclosan is no more effective than soap and water. The scientific literature has extensivelly linked the non-medical uses of triclosan to many health and environmental hazards. Triclosan is an endocrine disruptor and has […]

(Beyond Pesticides, November 18, 2010) Yesterday, the U.S. Environmental Protection Agency (EPA) announced that it has identified a list of 134 chemicals that will be screened for their potential to disrupt the endocrine system, along with a draft of the policies and procedures that the agency will follow for testing. Endocrine disruptors are chemicals that that interfere with the hormones produced or secreted by the human or animal endocrine system, which regulates development, metabolism, growth, and reproduction. These man-made chemicals are used in everyday materials but appearing in increasing levels throughout the environment. For years, scientists have noted strange anomalies in fish and wildlife in locations where endocrine disrupting chemicals (EDCs) are found. A recent study found that an astounding 100 percent of small mouth bass in certain sites of the Potomac River basin have exhibited both male and female organs, a characteristic linked to EDCs. According to a 2009 study by the U.S. Geologic Survey, the occurrence of “intersex” fish is now found to be nationwide. EPA is currently proceeding with endocrine disruptor screening on three fronts: 1) Developing and validating Tier 2 tests; 2) Selecting chemicals for screening and testing; and 3) Implementing the policies and procedures the […]

(Beyond Pesticides, November 17, 2010) Researchers with the U.S. Geological Survey (USGS) have found a dozen agricultural fungicides in the waters and sediments downstream of farms and orchards in western states. Presented November 8, 2010 at the annual meeting of the Society of Environmental Toxicology and Chemistry (SETAC) in Portland, Oregon, the findings represent the first such data on fungicides in the western U.S. Farmers routinely use fungus-killing compounds to spray or dust food crops, such as strawberries, corn, and soybeans. Some crops receive up to a dozen doses per growing season. Nationwide, fungicide use has risen considerably since the 1990s, reaching 350 million pounds in 2001. However, the environmental prevalence and effects on wildlife and ecosystems, particularly of newer fungicides, are poorly understood, says Kathryn Kuivila, PhD, of the USGS California Water Science Center. Environmental monitoring programs monitor concentrations of few or no fungicides, she notes. The study entitled, “Occurrence of Azoxystrobin, Propiconazole, and Selected Other Fungicides in US Streams, 2005—2006,” documents the occurrence of fungicides in select U.S. streams soon after the first documentation of soybean rust in the U.S. and prior to the corresponding increase in fungicide use to treat this problem. Water samples were collected from […]

(Beyond Pesticides, November 16, 2010) A French study published November 15, 2010 in the journal Environmental Health finds that pregnant women living in a municipality where peas or potatoes are grown have an increased risk of giving birth to an infant with a small head circumference. Head circumference also tends to be lower where wheat is grown, but not to statistically significant degree. The study finds no association between head circumference and proximity to other crops. The study’s authors suggest that pesticides, specifically organophosphates (OPs), are a possible cause. OPs were applied to most of the area devoted to pea and potato crops, but used less frequently in areas growing corn and wheat. The study, “Impact on fetal growth of prenatal exposure to pesticides due to agricultural activities: a prospective cohort study in Brittany, France,” utilized a prospective birth cohort of 3421 pregnant women in a French agricultural region (Brittany, 2002-2006) through gynecologists, ultrasonographers, and maternity hospitals during routine prenatal care visits before 19 weeks of gestation. The national agricultural census in 2000 provided the percentages of the municipality area devoted to cultivation of corn, wheat, colza, peas, potatoes, and fresh vegetables. The link between exposure to pesticides and birth […]

(Beyond Pesticides, November 15, 2010) A new study suggests the widespread use of the antimicrobial triclosan may be inhibiting the aquatic bacteria and algae needed for a healthy ecosystem. Triclosan is an antibacterial compound found in a wide variety of household products including soaps, cosmetics, toothpaste, flooring, textiles, and even children’s toys. According to the study entitled “Triclosan persistence through wastewater treatment plants and its potential toxic effects on river biofilms,” when triclosan finds its way into rivers and streams it can inhibit photosynthesis in algae and kill bacteria. The study examined a group of algae known as diatoms. Through photosynthesis, diatoms produce food as well as oxygen needed for other organisms. Diatoms produce an estimated 80 percent of the oxygen in our atmosphere making them essential to life on earth. When introduced to the market in 1972, triclosan was confined to hospital and health care settings. Aided by the false public perception that antibacterial products are best to protect and safeguard against potential harmful bacteria, triclosan has since exploded in the marketplace in hundreds of consumer products ranging from antibacterial soaps, deodorants, toothpastes, cosmetics, fabrics, toys, and other household and personal care products. Due to the prevalence of this […]

(Beyond Pesticides, November 10, 2010) A University of Florida, Gainesville study reports that the antibacterial pesticide triclosan, found in toothpaste, soaps, toys and clothing, interferes with estrogen metabolism in women and can disrupt a vital enzyme during pregnancy. These recent findings raise concerns about triclosan’s possible effects on fetal growth and development. This study is just one of an emerging body of science which supports triclosan as an endocrine disruptor and should be eliminated from consumer products. The study, which was published in the November print issue of the journal Environment International, examines the effect of triclosan on a placental enzyme, called estrogen sulfotransferase. Triclosan is known to inhibit sulfonation of phenolic xenobiotics and is structurally related to other known inhibitors of estrogen sulfotransferase, such as polychlorobiphenylols (PCBs). During pregnancy, the placenta is an important source of estrogen, which is needed for normal fetal development and successful parturition (childbirth), and estrogen sulfotransferase is thought to play an important role in regulation of estrogen availability. Estrogen is a key hormone during pregnancy and controls the way a baby develops many key organs like the brain. Triclosan was found to be a very potent inhibitor of both estradiol and estrone sulfonation. The […]

(Beyond Pesticides, November 9, 2010) In October, 11 groups representing chemical-intensive and biotech-based agricultural interests dropped out of the process to develop an American National Standards Institution (ANSI)-certified standard for sustainable agriculture, facilitated by the Leonardo Academy. The groups cited committee dominance “by environmental groups, certification consultants, agro-ecology and organic farming proponents” and an opposition to “modern agriculture” as their main reasons for resigning. The drop-outs include the American Farm Bureau Federation, American Frozen Food Institute, American Soybean Association, California Seed Association, CropLife America, Environmental Intelligence, Inc., Grocery Manufacturers Association, National Corn Growers Association, National Cotton Council of America, and United Fresh Produce Association. “These groups relentlessly pushed for molding the standard to validate industrial agriculture and high tech genetic manipulation,” says Jeff Moyer, Farm Director at the Rodale Institute and active member of the committee. “The model they propose confuses short-term profits for sustainability.” Responding to the resignation, a Leonardo Academy spokesperson said it, “recognizes their perspective but disagrees with their assessment.” The Academy believes their ANSI-approved standard development process provides the balance across interest categories needed for developing a Sustainable Agriculture Standard that will be widely implemented and successful in the marketplace. They state that the balance is […]

(Beyond Pesticides, October 25,2010) In an effort to control sea lice in farmed Atlantic salmon Health Canada has approved a request by the province of New Brunswick to use the pesticide Alphamax, whose active ingredient is deltamethrin. The high concentrations of salmon in aquaculture facilities has lead to major problems with sea lice, a type of parasitic crustacean that attaches to the fish. Health Canada has approved the use of the restricted pesticide deltamethrin through December of this year. While many salmon farmers are pleased, the decision by Canada’s federal agency has many local fishermen concerned about the effects the pesticide will have on fish and shellfish populations. “Basically we are shocked in a nutshell,” said Grand Manan Fishermen’s Association project manager Melanie Sonnenberg, adding, “Dsappointed doesn’t cover it.” The use of deltamethrin will be restricted to tarped cages or well boats, boats with large holds. Treatment would involve placing fish in the boats, bathing them in Alphamax and releasing them back into cages along with the treated water. The industry is ready to start using the treatment in the Bay of Fundy. Fish farmers have been challenged in controlling sea lice outbreaks this summer, particularly in the upper Passamaquoddy […]

(Beyond Pesticides, October 19, 2010) In addition to the ongoing investigation into the death of nearly 1,000 lobsters last fall around waters in New England and Canada, Environment Canada is now investigating the possible release of a pesticide that is not permitted for use in Canada. The pesticide, cypermethrin, is used in the U.S., including Maine, to control sea lice outbreaks in salmon farms, a practice under investigation. Cypermethrin is toxic to lobsters, and fishermen associations have been calling for the elimination of the use of pesticides in the marine environment. Fish farmers have been challenged in controlling sea lice outbreaks this summer, particularly in the upper Passamaquoddy Bay area. They have been using other chemicals to control the outbreaks, including hydrogen peroxide, Salmosan (azamethiphos), SLICE (emamectin benzoate) and Calicide (teflubenzuron). New Brunswick aquaculture organizations have maintained that fish farmers do not use cypermethrin, which is not permitted for use there. The New Brunswick Salmon Growers Association referred to the cocktail of pesticides used on salmon farms as “medicine” and referred to salmon farming techniques as “natural.” However, shoddy farming practices, such as growing too many fish per site and having too many sites in the same area, can lead […]

(Beyond Pesticides, October 15, 2010) Reversing previous rulings that claimed that the toxic pesticide endosulfan was “safe,” the Australian Pesticides and Veterinary Medicines Authority (APVMA) announced its decision Tuesday to finally cancel the registration of the highly hazardous chemical. Recent assessments by the Australian government’s Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) concluded that the prolonged use of endosulfan is likely to lead to adverse environmental effects via spray drift and run-off, and that these long-term risks could not be mitigated merely through use restrictions or label changes. Australia joins over 60 countries, including to the U.S. to have banned endosulfan. Endosulfan is an organochlorine insecticide that was first registered for use in the U.S. in the 1950s. It is an endocrine disruptor and exposure in male children may delay sexual maturity and interfere with sex hormone synthesis. Endosulfan also decreases semen quality, sperm count, spermatogonial cells, and sperm morphology, and contributes to other defects in male sex hormones. It is volatile, persistent, and has a high potential to bio-accumulate in aquatic and terrestrial organisms. Two-headed bass, for example, were found in the Noosa River resulting from surrounding pesticide drift from neighboring farms in Queensland, Australia. The pesticides, […]

(Beyond Pesticides, October 14, 2010) Over 13,000 organizations and individuals -consumers, parents, health advocates, farmworkers and others- from across the U.S. sent a letter to the Environmental Protection Agency (EPA) yesterday calling for a ban on the insecticide chlorpyrifos and a phase out of other organophosphate (OP) pesticides. Chlorpyrifos was phased out for residential use under a 2000 agreement between EPA and Dow Agrosciences, but continues to expose farmworkers and consumers through its use in agriculture. Also on October 13, the Endocrine Disruption Exchange (TEDX), led by renowned scientist Theo Colborn, PhD, announced the addition of chlorpyrifos to its online database, Critical Windows of Development, spotlighting research that links prenatal, low dose chlorpyrifos exposure to altered health outcomes in the brain and other organs. “Human studies have now linked prenatal exposure to chlorpyrifos with mental and developmental delays emphasizing even more the urgency to remove the product from the market,” said Dr. Colborn, President of TEDX and a signatory on the letter. “Chlorpyrifos illustrates the urgent need to be cautious, prevent further exposure and protect our children from the time they are conceived onward.” Beyond Pesticides calls EPA’s 2000 chlorpyrifos settlement with Dow a classic failure of the risk assessment […]

(Beyond Pesticides, October 5, 2010) A new report by the Breast Cancer Fund, a national organization working to eliminate the environmental causes of breast cancer, presents a summary of the scientific data on the environmental causes of the disease. The report catalogs the growing evidence linking breast cancer to, among other factors: synthetic hormones in pharmaceuticals, cosmetics and meat; pesticides in food; solvents in household cleaning products; BPA in food containers; flame retardants in furniture; and radiation from medical treatments. The report also highlights impacts on the most vulnerable populations (including infants, pregnant women, African-American women and workers), and outlines the policy initiatives required to develop a national breast cancer prevention plan. The report, State of the Evidence: The Connection Between Breast Cancer and the Environment, is the sixth edition published by the Breast Cancer Fund. “With each new edition of the report, the growing scientific evidence compels us to act to prevent breast cancer,” said Jeanne Rizzo, RN, president of the Breast Cancer Fund. “This Breast Cancer Awareness Month, our message is clear: we must move beyond awareness to prevention.” The report states that a woman’s lifetime risk of breast cancer is 1 in 8””representing a dramatic increase since […]

(Beyond Pesticides, October 4, 2010) The Nebraska Farm Bureau and its champion, Sen. Ben Nelson (D-Neb), have recently expressed concern over a series of actions and proposals by the U.S. Environmental Protection Agency (EPA) concerning agriculture. Arguing that EPA is “overreaching” and is “out of control” by introducing new regulations that create “more paperwork” for its farmers, Sen. Nelson and advocates for chemical-intensive agriculture dismiss the EPA’s mandate to protect public and environmental health. Sen. Nelson recently brought up his concerns at a Senate hearing with EPA Administrator Lisa Jackson. Nebraska Farm Bureau is asking the state’s congressional delegation to work with their colleagues to halt EPA’s “non-stop regulatory assault on the state’s farmers and ranchers and their counterparts nationwide.” In addressing Administrator Jackson, Sen. Nelson said he agreed with a number of Nebraska producers who have told him that agriculture’s perspective is not being considered in EPA’s decision making, saying that, “EPA is overreaching with proposed regulations for carbon emissions, atrazine, dust standards, applying clean water rules on pesticide use and greenhouse gas reporting for livestock operations.” “Many in the agricultural community are rightly concerned about EPA’s actions because the agency’s rules typically are implemented in a top-down fashion […]

(Beyond Pesticides, October 1, 2010) A new study by University of Notre Dame ecologist Jennifer Tank, PhD and colleagues reveals that streams throughout the Midwest are contaminated with transgenic materials from corn crop byproducts, even six months after harvest. The transgenic corn has been genetically engineered (GE) to produce its own insecticide, a toxin from the soil bacterium Bacillus thuringiensis (Bt). In a 2007 paper in the Proceedings of the National Academy of Science (PNAS), Dr. Tank and a group of researchers demonstrated that transgenic materials from corn (pollen, leaves, cobs) do, in fact, enter streams and can be subsequently transported to downstream water bodies. In a paper, “Occurrence of maize detritus and a transgenic insecticidal protein (Cry1Ab) within the stream network of an agricultural landscape,” published in the September 27, 2010 edition of PNAS, the researchers write about their nvestigation of the fate and persistence of the material and its associated Cry1Ab insecticidal protein, using a synoptic field survey of 217 stream sites in northwestern Indiana six months after crop harvest. “We found that corn crop byproducts were common in agricultural streams and that 86 percent of sites contained corn leaves, cobs, husks and/or stalks in the active stream […]

(Beyond Pesticides, September 29, 2010) A class action complaint claims Dial Corp. defrauds consumers about its Dial Complete soap by falsely claiming that it ‘kills 99.99% of germs,’ when in fact the product provides no benefit over washing with regular soap and water. The suit states that Dial Corp.’s claims are deceptive and misleading, designed solely to cause consumers to buy the product. Dial Complete contains triclosan, a registered pesticide, which is linked to numerous adverse effects including hormone disruption and water contamination. The suit wants Dial Corp. enjoined from continuing its deceptive advertising, disgorgement and damages for consumer fraud and deceptive business practices. The plaintiff, David Walls, in his suit states there are no reliable studies that show Dial Complete lives up to these claims. His complaint states: “Through its extensive and comprehensive nationwide marketing campaign, defendant claims that Dial Complete ‘kills 99.99% of germs’, is the ‘#1 Doctor Recommended’ brand of antibacterial liquid hand wash and ‘kills more germs than any other liquid hand soap’, when in actuality, it does not, a fact which Dial knew and purposely misrepresented and failed to disclose to consumers. To this day, Dial has taken no meaningful steps to clear up consumer […]

(Beyond Pesticides, September 28, 2010) A study published in the September 2010 issue of the journal Environmental Health Perspectives links low dose exposure to some persistent organic pollutants (POPs) to type 2 diabetes. The authors report that some POPs, including highly chlorinated PCBs, PBB153 and the organochlorine insecticides trans-nonachlor, oxychlordane and mirex, were associated with type 2 diabetes over an 18-year period, especially in obsese people. However, POPs did not show a traditional dose—response relationship with diabetes. Instead, POPs showed strong associations at relatively low exposures. The authors conclude that exposure to relatively low concentrations of certain POPs may play a role in the increased incidence of diabetes in the United States. The study, “Low Dose of Some Persistent Organic Pollutants Predicts Type 2 Diabetes: A Nested Case—Control Study,” examines participants who were diabetes free in 1987—1988. By 2005—2006, the 90 controls remained free of diabetes, whereas the 90 cases developed diabetes. Using serum collected in 1987—1988, the authors measured 8 organochlorine pesticides, 22 polychlorinated biphenyl congeners (PCBs), and 1 polybrominated biphenyl (PBB). They compare POP concentrations from Coronary Artery Risk Development in Young Adults (CARDIA) cohort and the National Health and Nutrition Examination Survey (NHANES) in 2003—2004. Persistent organic […]