Archive for the 'Events' Category
06
Aug
(Beyond Pesticides, August 6, 2009) American Bird Conservancy has petitioned the U.S. Environmental Protection Agency (EPA) to ban the import of crops containing any residues of 13 pesticides that are banned or restricted for use in the United States. These pesticides are highly toxic to birds, but are commonly used on crops throughout Latin America where many species of U.S. migratory birds spend the winter months. In addition to the environmental risks to birds, several of these chemicals also pose a risk to agricultural workers. “Allowing residues of these hazardous pesticides on imported food gives tacit U.S. approval to foreign countries to use chemicals that are known to be deadly to U.S. migratory birds,” said Dr. Michael Fry, American Bird Conservancy’s Director of Conservation Advocacy. “EPA has an obligation under Executive Order 13186, the Migratory Bird Treaty Act, and the Endangered Species Act to ensure that migratory birds are not harmed.” Many Latin American countries that currently use these pesticides export coffee, bananas, citrus crops, and other fruits and vegetables to the United States. Agricultural areas — in particular shade coffee farms — provide valuable habitat for migratory birds, and so pesticide use in these areas can pose a significant […]
Posted in Dichlorvos, Dimethoate, Farmworkers, Pesticide Regulation, Wildlife/Endangered Sp. | No Comments »
05
Aug
(Beyond Pesticides, August 5, 2009) In a letter authored by Senator Mark Leno and Assemblymember Bill Monning, and signed by twenty-five state legislators, the signatories called on Governor Schwarzenegger to keep the controversial pesticide methyl iodide out of California’s strawberry fields. “We strongly believe that methyl iodide has no role to play in building a secure, viable and healthy agricultural economy in the 21st Century,” said authors Senator Leno and Assemblymember Monning. On August 19, the Assembly Labor and Employment Committee will meet to explore the approval of methyl iodide and the potential impact on workers. “While I am encouraged at the decision of DPR to pursue the external peer review and public testimony, I still believe it is imperative to devote a special informational hearing by the Assembly Labor and Employment Committee focused on worker health and safety issues related to the potential registration of Methyl Iodide,” said Assemblymember Monning. “We are pleased that this group of legislators is taking the lead to protect public health. The scientific review of methyl iodide is very important in this case because of the sheer number of hazards it poses–cancer, thyroid disease, miscarriages, and neurotoxicity. This highly politicized process needs a reality […]
Posted in California, methyl iodide | No Comments »
31
Jul
(Beyond Pesticides, July 31, 2009) A group of advocates and experts is warning that pesticide pollution from farm fields and households is contributing to the Chesapeake Bay’s decline, and may well be linked to declines in frogs across the region and intersex fish seen in the Potomac River. In a report released yesterday, the group calls on federal, state and local government to accelerate research into what threats pesticide contamination may pose to the bay, and to step up efforts to reduce such toxic pollution. “The thing that alarms us the most are the endocrine disruptors and the findings that have come out about intersex fish and frogs with reproductive problems,” said Robert SanGeorge, director of the Pesticides and the Chesapeake Bay Watershed Project. Endocrine disruptors are chemicals that mimic the natural hormones in humans or animals and can disrupt their growth and reproduction. The project is a partnership between the Maryland Pesticides Network and the Johns Hopkins Center for a Livable Future. The group’s warning and recommendations are the product of a two-year study, in consultation with scientists, public health experts, government officials, watermen, environmentalists, farmers and pest management industries. The report comes as federal and state governments attempt […]
Posted in Endocrine Disruption, Maryland, Pesticide Regulation, Water, Wildlife/Endangered Sp. | No Comments »
30
Jul
(Beyond Pesticides, July 30, 2009) A new report from the Institute of Medicine (IOM) and sponsored by the U.S. Department of Veterans Affairs finds suggestive but limited evidence that exposure to Agent Orange and other herbicides used during the Vietnam War is associated with an increased chance of developing ischemic heart disease and Parkinson’s disease in Vietnam veterans. The report is the latest in a congressionally mandated series by IOM that every two years reviews the evidence about the health effects of these herbicides and a type of dioxin – TCDD – that contaminated some of the defoliants. A finding of “limited or suggestive evidence of an association” means that the evidence indicates there could be a link between exposure to a chemical and increased risk for a particular health effect, though conflicting results from studies, problems with how the studies were conducted, or other confounding factors limit the certainty of the evidence. Until now, the cumulative evidence had been inadequate to draw conclusions about whether these two conditions may be associated with veterans’ exposures to herbicides or TCDD. Ischemic heart disease – a condition characterized by reduced blood supply to the heart, which can lead to heart attack and […]
Posted in Parkinson's, TCDD | 1 Comment »
29
Jul
(Beyond Pesticides, July 29, 2009) A new study by researchers at the Lombardi Comprehensive Cancer Center at Georgetown University finds a higher level of common household pesticides in the urine of children with acute lymphoblastic leukemia (ALL), a cancer that develops most commonly between three and seven years of age. The findings are published in the August issue of the journal Therapeutic Drug Monitoring. Researchers, in the study entitled, “Pediatric Acute Lymphoblastic Leukemia and Exposure to Pesticides,” caution that these findings, which do not establish a cause-and-effect relationship, suggest an association between pesticide exposure and development of childhood ALL. “In our study, we compared urine samples from children with ALL and their mothers with healthy children and their moms. We found elevated levels of common household pesticides more often in the mother-child pairs affected by cancer,” says the study’s lead investigator, Offie Soldin, Ph.D., an epidemiologist at Lombardi. Dr. Soldin cautions, “We shouldn’t assume that pesticides caused these cancers, but our findings certainly support the need for more robust research in this area.” Previous studies have found that exposures to certain pesticides increases the risk of developing certain cancers and degenerative diseases. The study was conducted between January 2005 and […]
Posted in Cancer, Children/Schools, Leukemia | 1 Comment »
28
Jul
(Beyond Pesticides, July 28, 2009) A new study by researchers at the National Food Institute, Technical University of Denmark shows that exposure to a mixture of pesticides and other chemicals has a synergistic effect on the development of male sex organs. Synergy occurs when the effect of multiple chemicals is greater than the sum of the individual effects. The study, “Synergistic Disruption of External Male Sex Organ Development by a Mixture of Four Antiandrogens,” was published July 15, 2009 in the online edition of Environmental Health Perspectives. The researchers designed their study to determine the consequences of simultaneous exposure to multiple “antiandrogens.” An antiandrogen, or androgen antagonist, is any of a group of hormone receptor antagonist compounds that are capable of preventing or inhibiting the biologic effects of androgens, male sex hormones, on normally responsive tissues in the body. Disrupting the action of androgens during gestation, certain chemicals present in food, consumer products and the environment can induce irreversible malformations of sex organs among male offspring. The team investigated the effects of mixtures of a widely used plasticizer, di(2-ethylhexyl) phthalate (DEHP), used in medical devices such as IV bags and tubing, beauty products, PVC toys, vinyl shower curtains, car seats, […]
Posted in Birth defects, Chemicals, Disease/Health Effects | No Comments »
27
Jul
(Beyond Pesticides, July 27, 2009) A mother’s exposure to urban air pollutants known as polycyclic aromatic hydrocarbons (PAHs) can adversely affect a child’s intelligence quotient or IQ, according to the new study “Prenatal Airborne Polycyclic Aromatic Hydrocarbon Exposure and Child IQ at Age 5 Years.” PAHs are widespread in urban environments and throughout the world as they have many sources, several of which are related to pesticides, including creosote used for wood preservation, burning pesticide-laden grass seed fields, and exposure to organochlorine pesticides whether banned, yet ubiquitous DDT or the still used insecticide dicofol. Other sources include synthetic turf fields and the burning of coal, diesel, oil and gas, or other organic substances such as tobacco. PAHs have been known to be bioaccumulative, carcinogenic and disrupt the endocrine system. The new study, funded by the National Institute of Environmental Health Sciences (NIEHS), a branch of the National Institutes of Health, the U.S. Environmental Protection Agency and several private foundations, found that children exposed to high levels of PAHs in New York City had full scale and verbal IQ scores that were 4.31 and 4.67 points lower than those of less exposed children. High PAH levels were defined as above the […]
Posted in Children/Schools, creosote, DDT, dicofol, New York | No Comments »
23
Jul
(Beyond Pesticides, July 23, 2009) A new study published in the August 2009 issue of Environmental Toxicology and Chemistry found that insecticides used in highly populated agricultural areas of California’s Central Valley affect amphibians that breed in the Sierra Nevada Mountains to the east. This study adds to the increasing evidence that pesticides impact areas and wildlife species that are miles from sources of pesticide application. Researchers from the Cooperative Wildlife Research Laboratory, Southern Illinois University and U.S. Geological Survey (USGS) examined the chronic toxicity of two of the insecticides most commonly used in the Central Valley- chlorpyrifos and endosulfan, to larval Pacific treefrogs (Pseudacris regilla) and foothill yellow-legged frogs (Rana boylii), the amphibians with declining populations that live and breed in meadows surrounding the Sierra Nevada. The results are discussed in “Toxicity of Two Insecticides to California, USA, Anurans and Its Relevance to Declining Amphibian Populations.” The study used laboratory testing to examine how the insecticides affected the two frogs at environmentally realistic concentrations. During testing, tadpoles were observed at various stages of development to see how the insecticides affected their growth and health. The researchers found that endosulfan was more toxic than chlorpyrifos to both species, and tadpoles […]
Posted in Chemicals, Chlorpyrifos, Endosulfan, Water, Wildlife/Endangered Sp. | 1 Comment »
22
Jul
(Beyond Pesticides, July 22, 2009) The Oregon Department of Agriculture (ODA) recently released statistics for statewide pesticide use in 2008, while at the same time announcing the suspension of the reporting system, which has only been collecting data since 2007. The Pesticide Use Reporting System (PURS) was suspended until 2013 by House Bill 2999, due to lack of funding. The $800,000 saved will instead be used to fund two investigator positions. Until its reinstatement, officials will be unable to collect data or pursue enforcement related to missing reports from earlier in 2009. The 2008 PURS report documents agricultural and household pesticide use, which totaled almost 20,000 pounds and 572 different active ingredients. The top five active ingredients, by pounds, were all used in agriculture: metam sodium, glyphosate, 1,3-dichloropropene, sulfuric acid, and aliphatic petroleum hydrocarbons. Agriculture totaled 77 percent of all pesticide use, with urban/general indoor and outdoor uses totaling under four percent. The total used dropped by half from 2007, due in part to improved record keeping and a decline in the use of metam sodium, a popular fumigant in potato production. In households, pesticide use may be shifting away from the most toxic products. “In 2007, everyone was just […]
Posted in DEET, Glyphosate, Metam Sodium, Oregon, Water | No Comments »
20
Jul
(Beyond Pesticides, July 20, 2009) Public health and environmental advocates have asked the U.S. Environmental Protection Agency (EPA) to deny a request from Dow AgroSciences for a permit allowing it to release large amounts of sulfuryl fluoride, a toxic pesticide whose global warming effects are thousands of times stronger than carbon dioxide, onto farm fields in four states. Dow AgroSciences proposes using sulfuryl fluoride to sterilize soil in farm fields. The permit would allow the release of 32,435 pounds of sulfuryl fluoride on 65 acres of test plots in Florida, Georgia, Texas, and California. Yet, researchers have found that sulfuryl fluoride stays in the atmosphere at least 30-40 years and perhaps as long as 100 years and is about 4,000 times more efficient than carbon dioxide at trapping heat. Because of the aggregate effects of surfuryl fluoride, Beyond Pesticides jonined Fluroide Action Network and Envirornmental Working Group in petitioning the U.S. Environmental Protection Agency (EPA) to cancel the registration of the chemical due to dangerous levels in food and water. “The hazards of using sulfuryl fluoride in agriculture have not been evaluated,” said Brian Hill, Ph.D., a staff scientist at the Pesticide Action Network. Releasing just 10 percent of the […]
Posted in Chemicals, sulfuryl fluoride | No Comments »
17
Jul
(Beyond Pesticides, July 17, 2009) High levels of pyrethroid pesticides in the Sacramento-San Joaquin River Delta, the number one river system on America’s Most Endangered Rivers List of 2009, has been linked to heavy urbanization in the region. Leading a study to understand the collapse of the delta’s ecosystem, University of California-Berkeley toxicologist Donald Weston, Ph.D. found that these pesticides most likely reached the river from urban storm drains, collecting household pesticide disposal and runoff from lawns of 1.4 million residents in the Sacramento region. Five years ago, a study by Dr. Weston and his colleague Michael J. Lydy, Ph.D of Southern Illinois University in Carbondale found that synthetic phyrethroids were collecting in river and creek sediments at levels that are toxic to bottom dwelling fish. Current research holds that there are enough pyrethroids to kill tiny shrimp, which are said to be the first link in the aquatic food chain. Pyrethroids are synthetic versions of pyrethrin, a natural insecticide found in certain species of chrysanthemum. It initially came on the market as a ”˜safer’ alternative to the heavily regulated and highly toxic organophosphates, such as diazinon and chlorypyrifos. Despite the fact that there are plenty of effective pest control […]
Posted in Bifenthrin, Permethrin, Pyrethrin | No Comments »
16
Jul
(Beyond Pesticides, July 16, 2009) The U.S. Environmental Protection Agency (EPA) has issued a Final Work Plan (FWP) for the registration review of imidacloprid. A neonicotinoid insecticide, imidacloprid is highly toxic to honeybees on an acute exposure basis, and has been implicated in the recent Colony Collapse Disorder (CCD) that has occurred throughout the U.S. Over 12,000 comments were received by the agency since December 2008, urging the agency to suspend the use of this controversial chemical. Imidacloprid was first registered in the U.S. in 1994 as an insecticide to control a range of pests on crops, structures, indoor and outdoor residential areas, as well as pet products. While the use of imidacloprid has been gaining in popularity, its health and environmental effects have not been adequately studied. EPA, with its registration review program, pursuant to the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA) section 3(g), must review each registered pesticide every 15 years to determine whether it continues to meet the FIFRA standard for registration. The public docket for imidacloprid was opened in December 2008 and has since received over 12,000 comments, including those submitted by Beyond Pesticides, NRDC, the National Honey Bee Advisory Board (NHBAB) and Sierra Club, […]
Posted in Imidacloprid, Pesticide Regulation, Pollinators | No Comments »
15
Jul
On July 14, 2009, Beyond Pesticides and Food and Water Watch submitted an amended petition to the United States Food and Drug Administration (FDA) requiring that the agency ban the use of the controversial pesticide triclosan for non-medical applications on the basis that those uses violate the Federal Food, Drug and Cosmetics Act. Strong scientific evidence suggests that pervasive use of triclosan poses imminent threats to human health and the environment. “Numerous scientific studies and reports clearly indicate that in addition to its human health and environmental dangers, triclosan is not effective for many of its intended benefits and may actually be doing consumers more harm than good,” said Wenonah Hauter, executive director of Food & Water Watch. “Even worse, is that current regulations on triclosan haven’t been updated since 1994 and much of the science used by the FDA to regulate the pesticide dates back to the late 1970s and early 1980s. The agency’s inconsideration of new scientific research on triclosan represents an egregious failure to properly protect the public against this dangerous pesticide.” Regulated by both the FDA and the United States Environmental Protection Agency (EPA), triclosan is commonly found in hand soaps, toothpastes, deodorants, laundry detergents, fabric […]
Posted in Antibacterial, Chemicals, Triclosan, Water | 1 Comment »
14
Jul
(Beyond Pesticides, July 14, 2009) With language to exclude farmworkers from coverage, on July 10, 2009, Senator Kay Hagan (D-NC) introduced Senate Amendment 200 to the Affordable Health Choices Act, the health care reform bill being considered in the Senate Committee on Health, Education, Labor and Pensions (HELP). According to the advocacy group Farmworker Justice, her amendment would exclude from the definition of “employees” any “temporary or seasonal agricultural workers ”¦ for the purposes of determining the size of an employer.” Agricultural employers of seasonal farmworkers would not be required to participate in the system because they would be considered to be too small. Seasonal farmworkers would be denied health care coverage. “There can be no good explanation for why Senator Hagan thinks it would be a good idea to exclude seasonal farmworkers from access to affordable health care coverage, other than that she is pandering to agricultural employers and upholding the long tradition of excluding some of America’s lowest paid and hardest working employees from the benefits that other workers receive,” said attorney Kate Woomer-Deters of the North Carolina Justice Center. Farmworkers in the U.S. earn an average of $12,500 to $15,000 per year. They work in some of […]
Posted in Disease/Health Effects, Farmworkers, National Politics | 1 Comment »
13
Jul
(Beyond Pesticides, July 13, 2009) With the stroke of a pen, Governor Arnold Schwarzenegger could bow to industry interests and force the California Department of Pesticide Regulation to register a new fumigant pesticide, methyl iodide. Highly toxic, and not approved for use in California, this chemical has been given a comprehensive review by the state’s own Department of Pesticide Regulation (DPR) and found to be one of the riskiest pesticides in existence. Scientists familiar with methyl iodide are asking Mr. Schwarzenegger to let science, rather than political pressure, guide this decision. “Methyl iodide is so toxic that scientists working with it in the laboratory take extreme precautions when handling it, using a ventilation hood, gloves, and special equipment for transferring it so it does not escape to the air,” notes Susan Kegley, Ph.D., a chemist and consulting scientist for Pesticide Action Network North America. “This degree of protection is not possible in an agricultural setting where the pesticide would be applied at rates of 175 pounds per acre in the open air. Buffer zones of 400 feet (a distance most growers would say is unworkable) for a 40-acre fumigation would still result in a dose of methyl iodide to neighbors […]
Posted in California, chloropicrin, methyl iodide | No Comments »
10
Jul
(Beyond Pesticides, July 10, 2009) The Center for Biological Diversity notified the U.S. Environmental Protection Agency (EPA) earlier this week of its intent to file suit against the agency for failing to consider impacts to the polar bear and its Arctic habitat from toxic contamination resulting from pesticide use in the U.S. Pesticides registered by EPA for use in the U.S. are known to be transported to the Arctic via various atmospheric, oceanic, and biotic pathways. Such pesticides are biomagnified with each step higher in the food web, reaching some of their greatest concentrations in polar bears, the apex predators of the Arctic. A body of literature demonstrates the far-reaching effects of commonly used pesticides that are suspected endocrine disruptors and persistent organic pollutants, such as atrazine, 2,4-D, lindane, endosulfan, and permethrin, on global ecosystems. These pesticides, among others, and related contaminants have been linked to suppressed immune function, endocrine disruption, abnormalities in reproductive organs, hermaphroditism, and increased cub mortality in polar bears. Human subsistence hunters in the Arctic, who share the top spot on the food web with the polar bear, also face increased risks from exposure to these contaminants. “The poisoning of the Arctic is a silent crisis […]
Posted in 2,4-D, Atrazine, Chemicals, Endosulfan, Lindane, Litigation, Permethrin, Pesticide Regulation, Wildlife/Endangered Sp. | No Comments »
06
Jul
(Beyond Pesticides, July 6, 2009) Last week, the U.S. Environmental Protection Agency (EPA) proposed to formally evaluate the harmful effects of 74 pesticides on 11 endangered and threatened species in the San Francisco Bay Area over the next five years, and to impose interim restrictions on use of these pesticides in and adjacent to endangered species habitats. The proposal stems from a settlement agreement with the Center for Biological Diversity, which sued EPA in 2007 for violating the Endangered Species Act by registering and allowing the use of toxic pesticides in Bay Area endangered species habitats without determining whether the chemicals jeopardize those species’ existence. “Tens of millions of pounds of toxic and poisonous chemicals, known to be deadly to endangered species and harmful to human health, including proven carcinogens and endocrine disruptors, are applied in the Bay Area each year, and many of those find their way through runoff or drift into our soil, creeks and rivers, San Francisco Bay, and sensitive wildlife habitats,” said Jeff Miller, conservation advocate with the Center. “The toxic stew of pesticides in the Bay-Delta has played a major role in the collapse of native fish populations, and pesticides are a leading cause of […]
Posted in Atrazine, California, Chlorpyrifos, Diazinon, Litigation, Pesticide Regulation, Water, Wildlife/Endangered Sp. | No Comments »
02
Jul
(Beyond Pesticides, July 2, 2009) The EPA has just finished up with a round of public hearings on a proposed plan to cap a part of the Palos Verdes Superfund Site. This 17 square mile area of ocean floor off the Southern coast of California is home to one of the largest deposits of DDT in the U.S. Despite the fact that this chemical has been banned in the U.S. for almost four decades, there is an approximate 110 tons of DDT in the sediment of the Palos Verdes Shelf. Concentrations of DDT and PCBs in fish continue to pose a threat to human health and the natural environment including the discovery of highly contaminated fish. In addition, a surge of additional problems with the lingering effects of DDT have risen in recent years, particularly with its buildup in our waterways. It has currently been identified as a threat to the Columbia River, as well as to the arctic. It has also been linked to a plethora of health concerns, including breast cancer, diabetes, non Hodgkin lymphoma, and autism. Most of the contamination of the Palos Verdes Shelf is attributed to The Montrose Chemical Corporation of California. At one time […]
Posted in Aventis CropScience, California, DDT, Montrose, Water | 1 Comment »
01
Jul
(Beyond Pesticides, July 1, 2009) Researchers have found that one of the so-called “inert” ingredients in the popular herbicide product Roundup can kill human cells, particularly embryonic, placental and umbilical cord cells. Over 4,000 inert ingredients are approved for use in the U.S. and can be mixed with pesticide “active” ingredients; however these chemicals are not disclosed to consumers or users on pesticide product labels due to EPA’s intepretation (many would say incorrect interpretation) of federal pesticide law. Many inerts are classified as highly toxic, while others have not been adequately studied. About 100 million pounds of Roundup are applied to U.S. farms and lawns every year and until now, most health studies have focused on the safety of glyphosate the active ingredient in Roundup, rather than the mixture of “inert” ingredients found in the herbicidal product. In this new study, “Glyphosate Formulations Induce Apoptosis and Necrosis in Human Umbilical, Embryonic, and Placental Cells,” researchers found that Roundup’s inert ingredients amplified the toxic effect on human cells””even at concentrations much more diluted than those used on farms and lawns, and which correspond to low levels of residues in food or feed. One specific inert ingredient, polyethoxylated tallowamine, or POEA, was […]
Posted in Disease/Health Effects, Glyphosate, Inerts, Pesticide Regulation, polyethoxylated tallowamine | 1 Comment »
30
Jun
(Beyond Pesticides, June 30, 2009) How much do we know about the food we buy at our local supermarkets and serve to our families? In Food, Inc., producer-director Robert Kenner and investigative authors Eric Schlosser (Fast Food Nation) and Michael Pollan (The Omnivore’s Dilemma) lift the veil on the U.S. food industry — an industry that has often put profit ahead of consumer health, the livelihoods of American farmers, the safety of workers, and our own environment. The movie reveals how a handful of corporations control our nation’s food supply. Though the companies try to maintain the myth that our food still comes from farms with red barns and white picket fences, our food is actually raised on massive “factory farms” and processed in mega industrial plants. The animals grow fatter faster and are designed to fit the machines that slaughter them. Tomatoes are bred to be shipped without bruising and to stay edible for months. The system is highly productive, and Americans are spending less on food than ever before. But, the film asks, at what cost? Cattle are given feed that their bodies are not biologically designed to digest, resulting in new strains of E. coli bacteria, which […]
Posted in Corporations, Disease/Health Effects, Farmworkers, Genetic Engineering, Monsanto, National Politics | No Comments »
29
Jun
(Beyond Pesticides, June 29, 2009) Last week the United States Court of Appeals for the Ninth Circuit re-affirmed its previous decision upholding a nationwide ban on the planting of genetically-engineered (GE) Roundup Ready alfalfa pending a full Environmental Impact Statement (EIS). The Court determined that the planting of genetically modified alfalfa can result in potentially irreversible harm to organic and conventional varieties of crops, damage to the environment, and economic harm to farmers. Although the suit was brought against the United States Department of Agriculture (USDA), Monsanto Company and Forage Genetics entered into the suit as Defendant-Intervenors. In September 2008 the Ninth Circuit affirmed the lower court’s ruling, but the Intervenors continued to press the appeal alone, requesting the appellate court to rehear the case. Last weeks decision denied that request and re-affirmed the earlier decision in full. “This ruling affirms a major victory for consumers, ranchers, organic farmers, and most conventional farmers across the country,” said Andrew Kimbrell, Executive Director of the Center for Food Safety. “Roundup Ready Alfalfa represents a very real threat to farmers’ livelihoods and the environment; the court rightly dismissed Monsanto’s claims that their bottom line should come before the rights of the public and […]
Posted in Forage Genetics, Genetic Engineering, Glyphosate, Litigation, Monsanto | 1 Comment »
25
Jun
(Beyond Pesticides, June 25, 2009) Although it is known that infants are more susceptible than adults to the toxic effects of pesticides, this increased vulnerability may extend much longer into childhood than expected, according to a new study by researchers at the University of California, Berkeley. Among newborns, levels of paraoxonase 1 (PON1), an enzyme critical to the detoxification of organophosphate pesticides, average one-third or less than those of the babies’ mothers. It was thought that PON1 enzyme activity in children approached adult levels by age two, but instead, the UC Berkeley researchers found that the enzyme level remained low in some individuals through age seven. Based upon the findings, reported in the journal Environmental Health Perspectives, the study authors recommend that the U.S. Environmental Protection Agency (EPA) re-evaluate the current standards for acceptable levels of pesticide exposure. “Current EPA standards of exposure for some pesticides assume children are three to five times more susceptible than adults, and for other pesticides the standards assume no difference,” said Nina Holland, Ph.D., UC Berkeley adjunct professor of environmental health sciences and senior author of the paper. “Our study is the first to show quantitatively that young children may be more susceptible to […]
Posted in Children/Schools, Chlorpyrifos, Disease/Health Effects, Pesticide Regulation | 1 Comment »
23
Jun
(Beyond Pesticides, June 23, 2009) According to a study published in the August-September 2009 issue of the journal Environmental Pollution, the presence of triclosan, a widely-used antibacterial pesticide found in products from countertops to toothpaste, was detected in the in the blood of bottlenose dolphins. The study, “Occurrence of triclosan in plasma of wild Atlantic bottlenose dolphins and in their environment,” was the first to find triclosan in the blood of a marine mammal, suggesting that contamination from sewage systems is widespread. According to a synopsis by Environmental Health News, the study examined dolphins from rivers, an estuary, a harbor and a lagoon in South Carolina and Florida. In this study, wild bottlenose dolphins were live captured from several sites within an estuary in Charleston, SC and in the Indian River Lagoon, FL in 2005. Blood samples taken from 13 animals in each area revealed triclosan in 31 and 23 percent of the animals from the two sites, respectively, at levels ranging from 0.025 to 0.27 parts per billion. These levels are similar to what has been measured in the blood of humans. When introduced to the market in 1972, triclosan was confined to hospital and health care settings. Since […]
Posted in Antibacterial, Chemicals, Triclosan, Water, Wildlife/Endangered Sp. | No Comments »