(Beyond Pesticides, July 21, 2017) A March 2017 review of studies on the agricultural use of glyphosate (the active ingredient in “Roundup” and other formulated herbicides) points to widespread persistence in soils subject to long-term, intensive glyphosate use, and myriad resulting concerns about impacts on soil and environmental health. The review, by Robert J. Kremer, PhD, of the University of Missouri School of Natural Resources, cites concerns that include: reduction of nutrient availability for plants and organisms; disruption to organism diversity, especially in the areas around plant roots; reductions of beneficial soil bacteria; increases in plant root pathogens; disturbed earthworm activity; reduced nitrogen fixing at plant roots; and compromised growth and reproduction in some soil and aquatic organisms. Globally, glyphosate is the most widely used herbicide compound: in 2017, worldwide use is estimated to be approximately 1.35 million metric tons. Use in the U.S. has risen dramatically — from 2.72–3.62 million kg in 1987 to approximately 108 million kg in 2014, and 15-fold since 1996, when genetically engineered (GE) glyphosate-tolerant crops were introduced. Use has grown for a number of reasons, including more-intensive use as resistance to the herbicide grows. Researchers have found that, after years of consistent application to […]

(Beyond Pesticides, July 10, 2017) The state of California has listed glyphosate, the active ingredient in the popular Roundup, as a known carcinogen under its Proposition 65 law. This listing went into effect July 7, 2017. Now, state officials have to develop guidelines for product labels and determine what level of exposure to the pesticide will put people at risk for developing cancer. Some have argued that the state’s proposed levels are not protective enough. Meanwhile, the state continues to face pressure from Monsanto, maker of glyphosate, which continues to challenge the decision to list the chemical as a known cancer-causing agent. California’s decision to list glyphosate as a carcinogen was prompted by the International Agency for Research on Cancer’s (IARC) finding in 2015 that it is a “probable” human carcinogen. This classification was based on sufficient evidence of carcinogenicity in experimental animals. Later that year, California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment (OEHHA) announced that it intended to list glyphosate as a cancer-causing chemical under California’s Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65).  Under California law, Proposition 65 requires that certain substances identified by IARC be listed as known cancer-causing chemicals. Glyphosate’s listing became effective […]

(Beyond Pesticides, June 30, 2017) Scott Pruitt, Administrator of the U.S. Environmental Protection Agency (EPA), met privately with Dow Chemical’s CEO several weeks before reversing EPA’s tentative decision to ban chlorpyrifos, according to records recently obtained by the Associated Press (AP). A copy of Mr. Pruitt’s schedule reveals he met with Dow CEO, Andrew Liveris, on March 9 at a Houston hotel and “twenty days later Pruitt announced his decision to deny a petition to ban Dow’s chlorpyrifos pesticide from being sprayed on food.” At a hearing this week, U.S. Senator Tom Udall (D-NM) pressed Mr. Pruitt to name a peer-reviewed study that indicates that chlorpyrifos is safe. Mr. Pruitt answered by saying that “he had relied on ‘interagency dialogue’ with USDA [U.S. Department of Agriculture] before denying the petition to ban the chemical.” In a congressional hearing earlier this month regarding chlorpyrifos’ safety, Mr. Pruitt stated that his decision was founded on “meaningful data and meaningful science.” However, AP followed up with EPA to provide details on this science, and Mr. Pruitt’s office replied with quotes from trade groups and USDA, but failed to provide any scientific studies on the chemical’s safety. In March 2017, in an about-face, EPA’s Administrator […]

(Beyond Pesticides, June 29, 2017) On June 16, the European Chemicals Agency (ECHA) decided to classify bisphenol A (BPA) as an endocrine disruptor, and as a substance of “very high concern” due to “probable serious effects to human health.” The classification follows a proposal by the French food security agency (ANSES), which was made earlier this year. The committee, comprised of representatives from all 28 European Union EU countries, agreed to the classification unanimously. With pressure from environmental groups and others, the European Commission (EC) is working to define scientific criteria that will be used to identify endocrine disrupting chemicals (EDCs), and lead to more effective regulation in EU countries. In June 2016, the EC issued weak regulations on endocrine disruptors in pesticide products, undermining the precautionary legal standard that governs pesticide usage in Europe. Many scientists and advocacy organizations criticized the proposed regulations for creating an impossibly high burden of proof for defining harm from endocrine disrupting pesticides and other products. EDCs contained in common household products such as detergents, disinfectants, furniture, plastics, and pesticides, interfere with the body’s hormone system either by mimicking naturally produced hormones, blocking hormone receptors in cells, or effecting the transport, synthesis, metabolism or excretion […]

(Beyond Pesticides, June 8, 2017) On Monday, numerous organizations filed an administrative appeal to the U.S. Environmental Protection Agency (EPA), seeking to reverse Scott Pruitt’s order to continue allowing the toxic organophosphate insecticide chlorpyrifos in agriculture, and revoke all tolerances (allowed food residues) of the chemical. On the same day, Attorneys General (AGs) from seven states announced legal objections to Scott Pruitt’s order, also calling for a reversal of the decision and a revocation of all tolerances. Allowing the continued use of chlorpyrifos runs counter to findings of independent science and EPA’s own scientists, which establish unacceptable risks to humans and the environment. The administrative appeal, filed by Earthjustice on behalf of 12 environmental, labor, and civil rights organizations, resulted from the decision by EPA to allow the use of chlorpyrifos while it studies the safety of the chemical. The seven AGs, in their filing, are charging that EPA wrongfully approved the continued use of chlorpyrifos in agriculture without first gathering and assessing the full safety data, as required by the U.S. Food, Drug, and Cosmetic Act. Many environmental groups spoke out in favor of these filings. “There’s a good reason this dangerous toxin has been banned from indoor use for more […]

(Beyond Pesticides, May 23, 2017) Health ministers from the G20 nations, the largest advanced and emerging economies, identified Antimicrobial Resistance (AMR) as a “current and increasing threat and challenge to global health” and committed the member countries to several actions aimed at reducing the occurrence of AMR. The outcome of the first meeting of G20 health ministers, the Berlin Declaration of the G20 Health Ministers, addresses a wide range of global health issues, including AMR. The G20 declaration contains little more than a mention of antimicrobials in agriculture, but both it and the G20 Agriculture Ministers’ Declaration support WHO’s Global Action Plan on Antimicrobial Resistance. WHO’s action plan includes measures of effectiveness of actions, including member state adoption of “policies on use of antimicrobial agents in terrestrial and aquatic animals and agriculture, including: implementation of Codex Alimentarius and OIE [Organization for Animal Health] international standards and guidelines as well as WHO/OIE guidance on the use of critically important antibiotics; phasing out of use of antibiotics for animal growth promotion and crop protection in the absence of risk analysis; and reduction in nontherapeutic use of antimicrobial medicines in animal health.” The G20 meeting last weekend was not the first time world […]

(Beyond Pesticides, May 19, 2017) In spite of a growing body of evidence implicating glyphosate in a wide range of human illnesses and environmental impacts, the European Union (EU) plans to propose a 10-year extension for the approval of glyphosate use. Previously, the European Commission (the Commission), which is in charge of the approval, was forced to issue a limited license extension for the chemical because member states could not reach a consensus. The Commission was holding out for further information on carcinogenicity, which was assessed by the European Chemicals Agency (ECHA), and whose report was issued in March 2017. According to ECHA’s assessment, glyphosate is not carcinogenic. Glyphosate is the active ingredient in Monsanto’s Roundup brand of weed-killers, and research by the World Health Organization’s International Agency for Research on Cancer (IARC) has found that it is a probable human carcinogen. Since IARC’s findings were released, Monsanto has made several efforts to discredit the research of this well respected, international body, including attempting to influence government agencies. According to a Bloomberg BNA article, “The commission will discuss with EU member nations the prospect of a 10-year reauthorization, said Anca Paduraru, spokeswoman for the commission.” Once the Commission proposes the […]

(Beyond Pesticides, May 9, 2017) Last month, San Juan Capistrano (SJC) became the latest community in Orange County, CA to pass an organic landscaping policy for city parks and open spaces. The city’s move follows the passage of an organic land care policy in nearby Irvine, CA last year, and like Irvine, was brought forward by a strong contingent of local advocates, health practitioners, and city officials working together to safeguard public health and the environment. By a vote of 4-0-1, San Juan Capistrano’s City Council put the community on the cutting edge of local changes to pesticide use that are taking place across the country. SJC’s policy is the result of persistent pressure and engagement by community group Non-Toxic San Juan Capistrano with city officials. A change.org petition hosted by the group, which received over 300 signatures, detailed the discussions and responses the group received from local leaders. At the time the City Council took up the issue at a mid-April meeting, Mayor Kerry Ferguson made a strong statement indicating that, “Chemical pesticides and herbicides have been proven to be toxic to children, pets, and the general public.” Mayor Ferguson further said, “While [chemical pesticide] use is somewhat limited […]

(Beyond Pesticides, May 4, 2017) This week, a study released in the Proceedings of the Royal Society found evidence of reduced egg development and impact on feeding behavior in wild bumblebee queens after exposure to the neonicotinoid thiamethoxam. The study, led by researchers from the University of London, investigates the impact of field-relevant levels of thiamethoxam exposure on four wild species of bumblebee queens. In a BBC News article, lead author, Dr. Gemma Barron, Ph.D., stated, “We consistently found that neonicotinoid exposure, at levels mimicking exposure that queens could experience in agricultural landscapes, resulted in reduced ovary development in queens of all four species we tested. These impacts are likely to reduce the success of bumblebee queens in the spring, with knock-on effects for bee populations later in the year.” The study focuses on sublethal effects of neonicotinoids, as wild bumblebees are more likely to be exposed to low doses of these chemicals, rather than higher lethal levels. The queen bumblebees of four species were collected in the spring of 2014, with a total of 506 being used in the initial study groups. These queens were divided into three treatment groups and exposed to either a high level, low level, or no […]

(Beyond Pesticides, May 3, 2017) Last week, researchers at the University of California San Diego revealed the first ever link between the use of neonicotinoid pesticides and the ability of bees to fly. Published in Scientific Reports, the study, “A common neonicotinoid pesticide, thiamethoxam, impairs honey bee flight ability,” builds on previous findings that neonicotinoid use interferes with bees’ ability to navigate, and concludes that exposure to thiamethoxam affects honey bee flight patterns as well as their physical ability to fly in ways that may be detrimental to their survival. The study is the latest in a growing body of science linking pesticide use to honey bee declines, raising concerns about overall honey bee health and longevity in the face of continued neonicotinoid use. According to the study, both acute and chronic exposure to thiamethoxam revealed significant alterations of the ability of bees to fly -affecting flight distances, duration of flights, and flight velocity. Researchers noted significant differences in bee behavior based on short versus long term exposure, which they summarized as having an “excitatory short-term effect and a depressive longer-term effect” on the bees’ ability to fly. This means that when bees were exposed to thiamethoxam for a short, […]

(Beyond Pesticides, April 24, 2017) After contributing $1 million to Donald Trump’s presidential festivities, pesticide maker Dow Chemical Co. is asking the Administration to set aside previous findings of federal scientists across multiple agencies that confirm the risks that organophosphate pesticides pose to about 1,800 critically threatened or endangered species. This comes after the Administration abandoned plans to restrict the brain-damaging pesticide chlorpyrifos, also an organophosphate pesticide created by Dow, despite mountains of evidence that show the chemical’s neurotoxic impacts on children’s brains. In letters sent to government officials, lawyers for Dow urge Administration officials and the U.S. Environmental Protection Agency (EPA) to set aside “biological evaluations” that detail how three highly toxic organophosphate insecticides –chlorpyrifos, malathion and diazinon– harm nearly all 1,800 threatened and endangered animals and plants, claiming the process to be “fundamentally flawed.” Federal agencies tasked with protecting endangered species –EPA, National Marine Fisheries Service, U.S. Fish and Wildlife Service and U.S. Department of Agriculture– have worked for years to identify the risks posed by pesticides to threatened and endangered species under to the Endangered Species Act (ESA). Under Section 7 of ESA, states that any agency action must find that it “is not likely to jeopardize […]

(Beyond Pesticides, April 17, 2017) The Canadian Food Inspection Agency (CFIA) published a report on glyphosate testing last week, finding traces of the chemical in about one-third of food products and residue levels above the acceptable limits in almost four percent of grain products. These findings come on the heels of the U.S. Department of Agriculture’s (USDA) decision to abandon plans for testing the U.S. food supply for glyphosate residues. In light of this, Beyond Pesticides is again urging USDA to test for glyphosate residues in U.S. food. According to the CFIA report: “In 2015-2016, 3188 samples of domestic and imported food products were collected and tested for glyphosate residues in three programs: Testing of 482 samples of fresh and processed fruits and vegetables as part of the National Chemical Residue Monitoring Program (NCRMP); Retail survey of 2497 samples of grains (barley, buckwheat, and quinoa), beverages, bean, pea, lentil, chickpea and soy products; A survey of over 209 retail samples of infant foods as part of the 2015-2016 Children’s Food Project.” Out of the 3,188 products tested, glyphosate residues are detected in 29.7% of samples. The highest number of samples with residues detected occur in bean, pea and lentil products, at […]

(Beyond Pesticides, April 11, 2017) New data presented last week at a children’s health conference show that glyphosate, the active ingredient in the popular Roundup weed killer, is detected in pregnant women and could lead to adverse pregnancy outcomes, including shorter gestation times and lower birth weights. The researchers here are calling for more biomonitoring of the presence of glyphosate in the public, in spite of industry and government efforts to undermine the science surrounding the human health impacts of the herbicide. Researchers tested and tracked 69 expectant mothers and found that the presence of glyphosate levels in their bodily fluids correlated with unfavorable birth outcomes. The research is still in preliminary stages and is a project of the Children’s Environmental Health Network (CEHN), which is studying the reproductive and children’s health impacts of rising herbicide use in the Midwest. The preliminary results were presented at CEHN’s conference last Thursday in Washington DC. Learn more about the project here. This is a huge issue,” said Paul Winchester, M.D., member of the research team involved with this study, medical director of the neonatal intensive care unit at the Franciscan St. Francis Health system and professor of clinical pediatrics at Riley Hospital for […]

(Beyond Pesticides, March 31, 2017) On Wednesday, Scott Pruitt, the new head of the Environmental Protection Agency (EPA), rejected the conclusions of EPA scientists, and independent scientific literature, and reversed a tentative decision from 2015 to revoke food residue tolerances of chlorpyrifos due to the chemical’s neurotoxic impacts. This would have effectively banned chlorpyrifos from agriculture. This decision stemmed from a petition and lawsuit filed by the Natural Resources Defense Council (NRDC) and Pesticide Action Network North America (PANNA)  ten years ago, calling for EPA to revoke all chlorpyrifos tolerances and cancel all registrations. A Federal Appeals court mandated that EPA take final action by March 31, 2017. Mr. Pruitt’s decision leaves the door open for continued neurotoxic dangers for humans, especially children, who have been shown to be especially vulnerable to chlorpyrifos. Chlorpyrifos is part of the organophosphate (OPs) class of pesticides, which were used in World War II as nerve agents. As potent neurotoxicants, organophosphates are extremely harmful to the nervous system, given that they are cholinesterase inhibitors and bind irreversibly to the active site of an enzyme essential for normal nerve impulse transmission. The scientific evidence of neurotoxic dangers associated with chlorpyrifos exposure is extensive and consistent. Epidemiological data also […]

(Beyond Pesticides, March 7, 2017) Another study, published by a team of French scientists in the journal Occupational and Environmental Medicine, links childhood behavioral problems to pyrethroid insecticide exposure. Synthetic pyrethroids are a class of insecticides that have increased in use over the past decade due to assumptions that they pose fewer risks to human health than older pesticide chemistries, such as organophosphates. However, this latest study is part of a growing body of research showing that pyrethroids share similar neurocognitive health concerns as these older pesticides. .   In this research, scientists investigate the interplay between pyrethroid exposure and behavioral problems through a longitudinal cohort study, which tracks levels of pyrethroid metabolites, or breakdown products, in the urine of mothers beginning between six and 19 gestational weeks and then in their children up through six years of age. Children’s behavior is measured through a screening questionnaire known as the Strengths and Difficulties Questionnaire (SDQ). SDQ measures how social a child is (altruism), whether the child has difficulty sharing problems or asking for help (internalizing disorders), as well as how defiant or disruptive a child is (externalizing disorders). The study controlled for a number of confounding factors, such as weight, education, location (rural or […]

(Beyond Pesticides, March 2, 2017) On Tuesday, the European Commission (EC) refrained from voting on proposed scientific criteria that would have identified endocrine disrupting chemicals (EDC) and led to regulation on their use in EU countries. This sends the Commission back to the drawing board on the proposal, on which they hope to eventually take a formal vote. The failure to move forward with defined criteria on these hazardous chemicals, which are present in pesticides, biocides, and self-care products, is still largely due to the disagreements of voting member states over the rules reflecting hazard or risk-based criteria. There have been several other meetings of the member states on this proposal, including a meeting in December which highlighted the inadequacies of the criteria. After this meeting, according to Bas Eickhout, of the Greens-European Free Alliance, “Under the Commission’s criteria, it is likely that not a single substance would be identified as an endocrine disrupter, and they would effectively escape specific regulation.” This all follows on the weak regulations issued by the EC in June 2016 to regulate endocrine disruptors in pesticide products, which ultimately undermine the precautionary legal standard that governs pesticide usage in Europe. Many scientists and advocacy organizations criticized […]

(Beyond Pesticides, February 2, 2017) A commonly used inert pesticide ingredient negatively affects the health of honey bees by making larvae more susceptible to a virus, according to a recently published study in the journal, Nature. One of the authors of the study, Julia Fine, PhD candidate, stated that the findings, “Mirror the symptoms observed in hives following almond pollination, when bees are exposed to organosilicone adjuvant residues in pollen, and viral pathogen prevalence is known to increase. In recent years, beekeepers have reported missing, dead and dying brood in their hives following almond pollination, and exposure to agrochemicals, like adjuvants, applied during bloom, has been suggested as a cause.” The study assessed honey bee larval development after exposure to a continuous low dose of Sylgard 309, a surfactant, in their diet. This organosilicone surfactant is commonly used on agricultural crops, including tree fruits, nuts, and grapes. Their results reveal that honey bee exposure to chemical surfactants such as Sylgard 309 led to higher levels of Black Queen Cell Virus and when the bee larvae were exposed to the surfactant and virus simultaneously, “the effect on their mortality was synergistic rather than additive.” This research comes at a time when […]

(Beyond Pesticides, January 23, 2017) Last week, the U.S. Environmental Protection Agency (EPA)  released its final Biological Evaluations of Three Chemicals’ Impacts on Endangered Species, which finds that chlorpyrifos and malathion likely have detrimental effect on 97 percent of all species listed and protected under the Endangered Species Act (ESA), while diazinon adversely affects 78 percent. According to EPA’s release on the subject, this is the “first-ever draft biological evaluations analyzing the nation-wide effects” of these registered chemicals on endangered species after decades of widespread use. The evaluations stem from a legal settlement with the Center for Biological Diversity (CBD) in which CBD sued EPA in April 2014 for its failure to comply with ESA, which requires the agency to carry out consultations with federal wildlife agencies while registering pesticides. According to Nathan Donley, Ph.D., a CBD senior scientist, “We’re now getting a much more complete picture of the risks that pesticides pose to wildlife at the brink of extinction, including birds, frogs, fish and plants. When it comes to pesticides, it’s always best to look before you leap, to understand the risks to people and wildlife before they’re put into use. The EPA is providing a reasonable assessment of those risks, many of which can be […]

(Beyond Pesticides, January 11, 2017) Ultra-low doses of glyphosate formulations fed to rats is linked to an increased likelihood of developing non-alcoholic fatty liver disease (NAFLD), according to a recently published study in the journal Nature. A lead author of the study, Michael Antoniou, PhD, stated that the findings are “very worrying as they demonstrate for the first time a causative link between an environmentally relevant level of Roundup consumption over the long-term and a serious disease.” The findings point to the growing need to eliminate the widespread use of this herbicide, as it has already been implicated in endocrine disruption, reproductive effects, and kidney and liver damage. The researchers analyzed female rat livers obtained from a previous 2-year study on Roundup toxicity using molecular profiling techniques. These rats were administered Roundup via drinking water at a concentration of 0.1 ppb, which is an allowable level within both the U.S. and the European Union. The molecular analyses conducted by researchers on the internal organs of the rats fed Roundup included testing of liver cell disturbances. Overall, ultra-low dose glyphosate-formulation exposure led to observations of biomarkers also seen in fatty liver disease. These findings have human health implications “since NAFLD is predicted to be the […]

(Beyond Pesticides, January 10, 2017) Exposure to neonicotinoid (neonic) insecticides leads to a decrease in pollination frequency and fewer social interactions in bumblebees, according to research published by scientists from Harvard University and University of California, Davis. The study, released last year but presented this week at the Society for Integrative and Comparative Biology’s annual meeting, underscores the need for regulators and policy makers to eliminate use of these chemicals, not only to protect honey bees, but also wild pollinators like the bumblebee. While worker bumblebees (Bombus impatiens) divide their tasks within the colony in a similar manner to honey bees, their nests appear quite different than their more structured cousins. “Bumblebee nests are not the organized, beautiful geometry of the honeybee,” said James Crall, PhD candidate in Harvard’s Department of Organismic and Evolutionary Biology. Instead, “They’re more a hodge-podge of food and larvae in a pile in the middle of the nest space.” For their study, researchers placed four bumblebee colonies in a mesh enclosed area, tagged each bee, and observed them foraging on tomato flowers grown in a pollinator-excluding greenhouse (to ensure bees had freshly-opened flowers for pollination each day). After observing normal behavior, bees within each colony […]

(Beyond Pesticides, January 9, 2017) After the U.S. Environmental Protection Agency (EPA) released its recent human health risk assessment for the organophosphate insecticide (OP) tetrachlorvinphos (TCVP) on December 21, 2016, the agency announced it was allowing the continued use of the neurotoxic chemical to which children are widely exposed through pets’ flea collars and other flea treatments. According to EPA, ” TCVP is used as a direct animal treatment to livestock (i.e., cattle, horses, poultry and swine) and their premises, in kennels, outdoors as a perimeter treatment, and as a flea treatment [including flea collars] on cats and dogs.” In its announcement on January 4, 2017, EPA states, “We advise consumers to take certain precautions when handling TCVP products in residential areas. These precautions are listed on TCVP product labels, including: not allowing children to play with TCVP pet collar products, keeping TCVP spray and powder products out of reach of children, and washing hands thoroughly with soap and water after handling.” Advocates have raised concerns related to similar decisions on flea collars in the past in which EPA has issued warnings to mitigate risks, despite its inability to ensure children’s safety. Children typically come into close contact with pets and their […]

(Beyond Pesticides, January 3, 2017)  A study published in December 2016 in Environmental Contamination and Toxicology, entitled The Effect of Atrazine on Louisiana Gulf Coast Estuarine Phytoplankton, finds that phytoplankton in estuaries in close proximity to agricultural operations are less productive than phytoplankton in an uncontaminated environment. The study examines three different estuaries of the Mississippi river in Louisiana and also evaluates microcosms with different concentrations of atrazine. Phytoplankton, incredibly important to estuary ecosystems and aquatic life, are an integral part of the aquatic food web and ultimately critical to the wild seafood market. As photosynthetic microorganisms, phytoplankton harness the sun’s energy for metabolism and create as a byproduct of photosynthesis dissolved oxygen, which oxygen-breathing sea life require. For the study, the researchers created microcosms, or large containers that are able to closely mimic ecosystems, so that they can observe the effects of independent variables. On average, phytoplankton in the microcosms are less productive at producing chlorophyll a in the presence of atrazine. The microcosm study design is important because it is difficult to separate and measure the effects of chemicals like atrazine in the environment, given the range of potential causes of phytoplankton decline. A variety of factors, like freshwater discharge rates, precipitation, […]

(Beyond Pesticides, December 6, 2016) A new study released by researchers at the University of Washington, Seattle finds that exposure to organophosphate insecticides is associated with changes in oral bacterial diversity, particularly for exposed farmworkers. The study provides insight into the far-reaching changes pesticide exposure can cause to the human body, which are not captured by current risk assessment models used by the U.S. Environmental Protection Agency (EPA). Although past research has investigated the impact of pesticide exposure on the gut microbiome, this is one of the first studies to look at oral bacterial diversity. For the study, scientists took oral swabs from 65 adult farmworkers and 52 non-farmworker adults in the Yakima Valley of Washington State. Swabs were taken both during the spring/summer, when exposure to pesticides is high, as well as winter, when lower exposure is expected. At the same time the swabs were taken, researchers also took blood samples of individuals in the study. Scientists focused on exposure to the organophosphate insecticide Azinphos-methyl (AZM), which at the time of the study (2005-2006) had not begun its cancellation proceedings. Results show that farmworkers have greater concentrations of AZM in their blood than non-farmworking adults in the area. It […]