(Beyond Pesticides, August 25, 2010) Exposure to pesticides while in the womb may increase the odds that a child will have attention deficit hyperactivity disorder (ADHD), according to researchers at the University of California-Berkeley School of Public Health. Maternal metabolites of organophosphate pesticides have previously been associated with neurobehavioral deficits in children. The California researchers are studying the impact of environmental exposures on the health of women and children who live in the Salinas Valley, an agricultural region with heavy pesticide use. They tested the urine of pregnant women for pesticide residue, and then tested the behavior of their children at ages 3 ½ and 5. The 5-year-olds who had been exposed to organophosphate pesticides while in the womb have more problems with attention and behavior than did children who were not exposed. Results are published online in the study entitled, “Organophosphate Pesticide Exposure and Attention in Young Mexican-American Children,” in the journal, Environmental Health and Perspectives. Previous studies have shown that exposure to some organophosphate compounds cause hyperactivity and cognitive deficits in animals. One study published in Pediatrics earlier this year found that exposure to organophosphates in developing children might have effects on neural systems and could contribute to […]

(Beyond Pesticides, August 24, 2010) Update: The Healthy Schools Act of 2010 (SB 1157) passed the State Assembly, but on September 29, 2010, Governor Schwarzenegger vetoed the bill which would have required all schools in California to adopt integrated pest management (IPM), using the least hazardous pesticides available. Environmental and public health groups will continue to work on the issue. Grassroots organizations in California predict that the Healthy Schools Act of 2010 (SB 1157), a bill that would require least-toxic integrated pest management (IPM) in all California schools, could be voted on by the full State Assembly within the coming days. Environmental and public health groups are encouraging California residents to contact their members of the State Assembly, asking them to pass SB 1157 with mandatory least-toxic IPM and a mechanism for strong enforcement. In other news relating to California schools and public health, a coalition of state environmental justice organizations sent a letter to the Los Angeles Unified School District (LAUSD) expressing concern over the building of an elementary school that will serve primarily low-income students on top of a contaminated site. There is also concern that, because California’s school siting policy is considered the strongest in the country, […]

(Beyond Pesticides, Aug 16, 2010) A recently released study conducted by the National Institutes of Environmental Health Sciences shows government agencies may be underestimating children’s dietary exposure to pesticides and, therefore, the inherent risks to children’s health. The study, “Assessing Children’s Dietary Pesticide Exposure- Direct measurement of Pesticide Residues in 24-Hour Duplicate Food Samples” lead by Dr. Chensheng Lu, examines the pesticide residues in foods consumed by children in a study group and builds on a previous study published in 2008 entitled “Dietary Intake and Its Contribution to Logitudinal Organophosphorus Pesticide Exposure in Urban/Suburban Children.” The 2008 study examined the concentrations of organophosphate pesticides in the bodies of children who consumed a diet of conventional produce and then switched to a diet of organic produce. The study examined two groups of 23 children ranging in age from 3 to 11, in Seattle, Washington and Atlanta, Georgia. Researchers measured the concentrations of malathion, chlorpyrifos, and other organophosphate pesticide metabolites in the children’s urine. These pesticides have no residential uses, and because all children in the study group live in urban or suburban areas, researchers assumed that all exposure to these pesticides were the result of diet. The children were then fed […]

(Beyond Pesticides, August 3, 2010) A new study shows that due to a flaw in standard risk assessments, which consider toxic effects at fixed exposure times, the risks posed by the neonicotinoid pesticides imidacloprid and thiacloprid are likely to be underestimated. The authors believe that minute quantities of imidicloprid may be playing a much larger role in killing bees over extended periods of time than previously thought. The study, “The significance of the Druckrey—Küpfmüller equation for risk assessment””The toxicity of neonicotinoid insecticides to arthropods is reinforced by exposure time,” was published online July 23, 2010 in the journal Toxicology. The authors believe that standard risk assessment calculations underestimate toxicity because they do not accurately account for the interplay of time and level of exposure. According the study: The essence of the Druckrey—Küpfmüller equation states that the total dose required to produce the same effect decreases with decreasing exposure levels, even though the exposure times required to produce the same effect increase with decreasing exposure levels. Druckrey and Küpfmüller inferred that if both receptor binding and the effect are irreversible, exposure time would reinforce the effect. The Druckrey—Küpfmüller equation explains why toxicity may occur after prolonged exposure to very low toxicant […]

(Beyond Pesticides, Aug 2, 2010) A new report conducted by an Ann Arbor, Michigan based coalition of health and environmental groups estimates that children’s exposure to toxic chemicals, including pesticides, cost Michigan billions of dollars each year. The study examines the costs associated with four environmentally related childhood diseases: lead poisoning, asthma, pediatric cancer, and neurodevelopmental disorders. Treating these four disorders costs the state of Michigan an average of $5.85 billion annually. The study, “The Price of Pollution: Cost Estimates of Environment-Related Childhood Disease in Michigan” was released in time for the US House Energy and Commerce Committee hearings on the Toxic Chemicals Safety Act of 2010, an overhaul of the 1976 Toxic Substances Control Act (TSCA). Using conservative estimates researchers consider direct costs such as medical treatment, as well as less direct costs such as parent wage losses. The study also notes the substantial emotional costs to families dealing with these potentially life threatening or debilitating conditions which cannot be quantified. Lead poisoning is found to be the most costly of the diseases studied, costing on average $4.85 billion annually, followed by childhood asthma, pediatric cancer, and neurodevelopmental disorders. These four disorders alone cost the state of Michigan 1.5% […]

(Beyond Pesticides, July 29, 2010) A set of mandatory rules intended to reduce pesticide use in public and private schools in Indiana is pending approval after voluntary implementation guidelines failed. The Indiana Pesticides Board submitted a draft proposal in June outlining rules to minimize pesticide exposure to students. These measures include banning the use of pesticides when students are present, keeping pesticides locked in storage areas where students do not have access, providing advance notice of pesticide applications, and using pesticides with the lowest hazards to children. Although Beyond Pesticides recommend the additional step of developing a defined Integrated Pest Management (IPM) program, these tactics represent a good first step towards pesticide reduction in schools. The Indiana School Board Association developed a set of voluntary pesticide guidelines in 2001, but while rates of adoption increased, the Indiana state chemist’s office found that some schools were not implementing those policies, or had not adopted pesticide guidelines. It is important that schools adopt a comprehensive pesticide policy because children are especially vulnerable to the health hazards associated with pesticide exposure due to their small size, greater intake of air and food relative to body weight, and developing organ systems. Several pesticides, including […]

(Beyond Pesticides, July 26, 2010) Researchers at the Center for Children’s Environmental Health Research, UC Berkeley School of Public Health has found that the majority of child daycare centers surveyed do not understand the term Integrative Pest Management (IPM), and many spray pesticides without notifying parents or posting signs. Specifically, the survey found that over 90% of participating child care centers in the state of California have at least one pest problem, yet only 25% understand what IPM means. When using pesticides, 24% of survey participants do not notify parents and 35% do not post any warning signs. The survey was conducted for the California Department of Pesticide Regulation (DPR), which is required under the California Healthy Schools Act to collect data on pest management in child care centers. Children are especially vulnerable to pesticides due to their developing organ system. Because they eat more and respire more than adults relative to body size, and they often put things in their mouths, they are exposed to more pesticides than adults. Research shows that even low levels of pesticide exposure can affect a child’s neurological, respiratory, immune, and endocrine system. The California Healthy Schools Act requires schools as well as private […]

(Beyond Pesticides, June 17, 2010) Researchers have found detectable levels of common household pesticides in the majority of umbilical cord blood of babies born at an urban hospital. The study looks at concentrations of organophosphate (OP), carbamate, pyrethroids, and organochlorine pesticides in samples of umbilical cord blood taken from newborns delivered at the Johns Hopkins Hospital Labor and Delivery Suite in Baltimore. Researchers looked at the umbilical cord serum, as opposed to maternal serum, in order to provide a more direct estimate of exposure to the fetus. While human biomonitoring studies have found detectable levels of these pesticide chemicals in urine and blood samples from children and adults in the past, few studies have been carried out in the U.S. evaluating exposure in utero. In addition to tracking pesticide concentrations, researchers also aimed to identify demographic and socioeconomics factors associated with in utero pesticide exposure. Anonymous anthropometric and sociodemographic characteristics of the mothers and infants were collected along with umbilical cord blood that would have otherwise been discarded. Included in the characteristics collected that researchers considered might affect pesticide exposure risk were: age, race, body mass index, parity, education, health insurance, marital status, smoking, area of residence and housing density. […]

(Beyond Pesticides, May 21, 2010) Governor Patterson of New York signed the Child Safe Playing Field Act into law on Tuesday, marking a huge victory for grassroots environmental and human health groups. The law helps to protect children by banning the use of pesticides on school playing fields and play grounds. Schools will have one year to comply with the regulations. In New York and across the country, schools routinely apply pesticides and “weed and feed” products (pesticides mixed with chemical fertilizers), which are linked to cancer, endocrine disruption, learning disabilities, asthma and other problems. Strong opposition from the pesticide industry had led to a previous version of the bill being defeated nine times. While the earlier versions of the legislation included all outdoor school grounds, the scope was narrowed to include only playgrounds and playing fields to help ensure passage. In addition, over 8,000 letters were sent to legislators in favor of the bill and over 18,000 people signed a petition, according to Citizens Campaign for the Environment. The Child Safe Playing Field Act requires that all schools, preschools, and day care centers both public and private to stop using pesticides on any playgrounds or playing fields. The law […]

(Beyond Pesticides, May 18, 2010) A team of scientists from the University of Montreal and Harvard University have discovered that exposure to organophosphate pesticides is associated with increased risk of Attention-Deficit Hyperactivity Disorder (ADHD) in children. Using data from the National Health and Nutrition Examination Survey, the study focused on 1,139 children from the general U.S. population and measured pesticide breakdown product levels in their urine. The authors conclude that exposure to organophosphate (OP) pesticides, at levels common among U.S. children, may contribute to a diagnosis of ADHD. “Previous studies have shown that exposure to some organophosphate compounds cause hyperactivity and cognitive deficits in animals,” says lead author Maryse F. Bouchard, a professor at the University of Montreal Department of Environmental and Occupational Health and scientist at the Sainte-Justine Hospital Research Center. “Our study found that exposure to organophosphates in developing children might have effects on neural systems and could contribute to ADHD behaviors, such as inattention, hyperactivity, and impulsivity.” Marc Weisskopf, PhD, ScD, another study author told Reuters, “What this paper specifically highlights is that this may be true even at low concentrations.” For children with a 10-fold increase in the concentration of the most common dialkyl phosphate metabolites […]

(Beyond Pesticides, May 12, 2010) Disturbed to learn that an advisory committee in his community in Boulder, Colorado had approved two new herbicides for use on city parks, a 9-year-old environmental activist organized a group of some two dozen children to protest the potential use of the herbicides in front of the Boulder County Courthouse last Friday. Xiuhtezcatl Roske-Martinez is a third grader who loves playing kickball and baseball in Boulder city parks. But then he heard that the advisory committee had approved two new herbicides for use on city parks. “I didn’t think it was right,” he said. “The children of this generation should be able to grow up without worrying about the air they’re breathing or the grass they’re playing on.” The Integrated Pest Management Subcommittee – made up of representatives of three city boards – recommended that Boulder add the herbicides, Tenacity and Barricade, to the list of allowed turf treatments. Xiuhtezcatl organized a group of some two dozen children to protest the potential use of the herbicides. They gathered Friday in front of the Boulder County Courthouse on the Pearl Street Mall waving hand-lettered signs that read “Let us play in clean parks,” “We love dandelions” […]

(Beyond Pesticides, May 7, 2010) Human Rights Watch has released a scathing report entitled “Fields of Peril” on the treatment of child farm workers in the United States. To compile the report, Human Rights Watch interviewed child and young adult farm laborers and parents in all regions of the country, as well as farm managers, and owners, lawyers, doctors, social workers, nurses, and government officials. A previous report entitled “Fingers to the Bone” was released in 2000. Their research shows that conditions have not changed much for the estimated 300,000 to 400,000 child farm workers in the United States. Exposure to pesticides, long hours in extreme weather, the use of heavy machinery, and demanding physical labor makes farm work one of the most dangerous jobs in the United States. According to the Centers for Disease Control’s National Institute for Occupational Safety and Health (NIOSH) farm work is the most dangerous work open to children. Yet child farm workers have much less protection under the Fair Labor Standards Act (FLSA) than children in any other industry. According to the report, even the minimal protections established by the FLSA are often ignored by employers. Impoverished farmworkers fearing the loss of their jobs […]

(Beyond Pesticides, April 26, 2010) With the growing number of viable, cost-effective alternative pest management strategies, it has never been easier for schools to eliminate the unnecessary use of toxic pesticide in school buildings and on school grounds. In celebration of Healthy School Day, an annual event coordinated by the Healthy Schools Network, Beyond Pesticides, one of the event’s 25 co-sponsors, asks parents, school staff and administrators, government agencies, community activists, and those in political office to demand that our nation’s schools do a better job at providing environmentally safe schools for children. In the absence of federal law, such as the proposed School Environment Protection Act (SEPA), some states and local school districts have attempted to provide children with the protection they need from hazardous pesticide exposure while at school, yet the level of protection is uneven and inadequate across the country, with the majority of children left unprotected. There is no reason to expose children to hazardous pesticides and cleaning agents. The tools and experience are available to ensure environmentally safe schools for all children. “The vulnerability of infants and children to the harmful effects of pesticides continues to attract national attention. Schools from across the country document […]

(Beyond Pesticides, April 19, 2010) Mississippi Governor Haley Barbour last week signed a childhood asthma management and prevention bill into law that includes provisions requiring all public school districts to implement an Integrated Pest Management (IPM) program and prohibiting the use of hazardous substances such as cleaning products and pesticides. Although the bill reads as though it will do a lot for children with asthma, with regard to the actual eliminatiion or significant reduction of toxic pesticide use at schools, the bill is weakly worded and will need strong regulations to be meaningful in protecting children from pesticide-asthma triggers. Specifically, this new law, effective July 1, 2010, requires schools to allow students to self-administer asthma and anaphylaxis medication; recommends students with asthma to have an Asthma Action Plan on file at the school; provides training for teachers, nurses, and all other school staff on asthma; requires buses to minimize idling time; requires local school health councils to adopt and support the implementation of a local school wellness policy that includes minimizing children’s exposure to pollutants that can aggravate asthma and prohibits the use of hazardous substances such as cleaning products and pesticides in and around school buildings during the hours […]

(Beyond Pesticides, April 8, 2010) The U.S. Environmental Protection Agency (EPA) is requiring new restrictions on aluminum and magnesium phosphide products in an attempt to better protect people, especially children, from dangerous exposures. The new restrictions prohibit all uses of the products around residential areas and increase buffer zones for treatment around non-residential buildings that could be occupied by people or animals from 15 feet to 100 feet. Human exposure to these toxic chemicals, though slightly minimized, would nevertheless continue because of their continued availability for use on athletic fields and playgrounds, around non-residential buildings, and in agricultural production. Phosphide fumigants are known to be highly acutely toxic when ingested or inhaled. Symptoms of mild to moderate acute exposure include nausea, abdominal pain, tightness in chest, excitement, restlessness, agitation and chills. Symptoms of more severe exposure include diarrhea, cyanosis, difficulty breathing, pulmonary edema, respiratory failure, tachycardia (rapid pulse) and hypotension (low blood pressure), dizziness and/or death. Aluminum and magnesium phosphide fumigants are used primarily to control insects in stored grain and other agricultural commodities. They also are used to control burrowing rodents in outdoor agricultural and other non-domestic areas. The fumigants are restricted to use by specially trained pesticide applicators. […]

(Beyond Pesticides, April 6, 2010) A new report analyzing regulations from California’s 25 top agricultural counties finds that many counties do more to protect crops than children from potentially harmful pesticide drift. The report, Pesticide Protection Zones: Keeping Kids Safe at School, finds that eleven counties have no protection zones around schools at all, while another six only limit spraying when school is in session. By contrast, the report notes that nearly 25% of the counties have larger pesticide buffer zones for crops than for schools. “It seems insane to have stringent rules protecting nuts and peaches while schoolchildren remain at risk from chemicals that can cause cancer, birth defects, and other serious health problems,” said Paul Towers, director of Pesticide Watch Education Fund and a co-author of the report. “But that’s exactly what’s happening in counties across California. It is past time for a simple, statewide rule that protects all California children from pesticide drift at school.” “Our children deserve to be protected from these cancer-causing chemicals,” said Assembly member Sandré Swanson, who has introduced AB 1721, the Health and Safety School Zones Act, to fix the problem. “The people of California have made it clear that clean air […]

(Beyond Pesticides, March 29, 2010) Prenatal exposure to pesticides at levels that do not cause adverse health effects in the mother can lead to delayed brain developmental in the child, according to the new study, “Neurobehavioral Deficits and Increased Blood Pressure in School-Age Children Prenatally Exposed to Pesticides,” published last month in the early online edition of the journal Environmental Health Perspectives. Many pesticides are suspected of being capable of damaging the nervous system, in particular the development of a child’s brain during pregnancy and the early postnatal years of life. Now an international research team led by Philippe Grandjean, M.D., from the University of Southern Denmark and Harvard School of Public Health, has shown a delayed brain development up to two years in school children, whose mothers worked in a greenhouse during pregnancy. The exposed children also had increased blood pressure, while the mothers do not suffered adverse symptoms themselves. “The results support the notion that, in this cohort of children, prenatal exposures to pesticides are more harmful than current exposures, thereby confirming previous results of other environmental studies of neurodevelopmental toxicity and the theory of window of vulnerability of central nervous system during uterine life,” write the authors. […]

(Beyond Pesticides, March 26, 2010) A new study by researchers at Columbia University’s Mailman School of Public Health has linked exposure to the insecticide chlorpyrifos to early childhood developmental delays. Chlorpyrifos is a broad spectrum organophosphate insecticide that was banned for household use in 2001, but is still widely used in agriculture. The study, entitled “Chlorpyrifos Exposure and Urban Residential Environment Characteristics as Determinants of Early Childhood Neurodevelopment,” was published online and will be published in print in the may issue of the American Journal of Public Health. The study examined 266 children born between 1998 and 2002 living in low income neighborhoods of the South Bronx and Northern Manhattan in New York City. Before being banned chlorpyrifos was widely used in these areas. Of the children studied, 47% were male, 59% were Dominican and 41% were African American. Researchers compared motor and mental development to levels of exposure to the pesticide at birth. They found that high concentrations of chlorpyrifos in umbilical cord blood (>6.17 pg/g) corresponds to a 6.5 point decrease in the Psychomotor Development Index, and a 3.3 point decrease in the Mental development index in 3 year olds. Previous research published in 2006 on the same […]

(Beyond Pesticides, March 17, 2009) “Children Act Fast…So Do Poisons” is the message that the U.S. Environmental Protection Agency (EPA) is sending in conjunction with the Poison Prevention Week Council to keep poisonous substances out of the hands of children. In observance of the annual National Poison Prevention Week (March 14-20), EPA recommends locking up household cleaners, disinfectants, solvents and other materials as the best way to reduce accidental poisoning among children. However, Beyond Pesticides advises the public to throw out poisonous chemicals and utilize non-toxic methods of pest management. While it is wise to keep all potentially harmful household products out of the reach and hands of children, Beyond Pesticides recommends to the public to abandon poisonous chemicals and instead practice non-toxic methods of pest management and use least-toxic chemicals where possible. EPA continues to facilitate and apologize for the unnecessary use of highly toxic pesticides, disinfectants, solvents and other hazardous materials that it registers, and misses every year the important opportunity during National Poison Prevention Week to alert families with children about integrated pest management and organic methods that are effective, but not reliant on hazardous methods. Numerous scientific studies that show children carrying a body burden of […]

(Beyond Pesticides, February 11, 2010) Investigators are tying the deaths of 4-year and 15-month old sisters in Layton, Utah to a pesticide that was used to kill voles, small burrowing rodents, in their family’s front yard. The 4-year-old, Rebecca Toone, died Saturday and her sister Rachel died on Tuesday after the family was hospitalized with flu-like symptoms then discharged. The girls went back to the hospital when they fell ill again after returning home. The cause of the deaths has not yet been determined, according to the Utah Medical Examiner’s Office, and toxicology tests are expected to take up to eight weeks to complete. However, investigators say that the chemical may have wafted into the family’s home after an exterminator dropped Fumitoxin, aluminum phosphide, pellets in burrow holes in the lawn on Friday. Upon exposure to moisture in the air, the pellets immediately decompose to phosphine gas. The death of these children and the poisoning of the family raise serious issues about the adequacy of the pesticide’s label restrictions, approved by the U.S. Environmental Protection Agency (EPA), and their enforceability. In the case of aluminum phosphide, EPA has allowed the use that led to these avoidable deaths after proposing to […]

(Beyond Pesticides, January, 21, 2009) A new study concludes that exposures during pregnancy and childhood to insecticides that target the nervous system, such as organophosphates (OPs) and carbamates, are associated with childhood brain tumors. The researchers hypothesize that this susceptibility might be increased in children with genetic variations that affect the metabolism of these chemicals. The study, “Childhood Brain Tumors, Residential Insecticide Exposure, and Pesticide Metabolism Genes,” examines whether childhood brain tumors (CBT) are associated with the functional genetic variations. The study provides evidence that exposure to insecticides, paired with specific metabolism gene variants, may increase the risk of CBT. DNA was extracted from archival screening samples for 201 cases ≤ 10 years of age and born in California or Washington State between 1978 and 1990. Insecticide exposures during pregnancy and childhood were classified based on interviews with participants’ mothers. The children’s mothers reported whether they or anyone else had chemically treated the child’s home for insects including termites, fleas, ants, cockroaches, silverfish, or “other” pests. The results are consistent with the possibility that children with a reduced ability to metabolize organophosphate and carbamate insecticides might be at increased risk of CBT when sufficiently exposed. The researchers observed multiplicative interactions […]

(Beyond Pesticides, January 12, 2010) Beyond Pesticides, along with Case Western Reserve University Medical School’s Swetland Center for Environmental Health and the local grassroots group Beyond Pesticides Ohio, will be hosting Greening the Community, the 28th National Pesticide Forum, April 9-10, 2010 in Cleveland, OH. This national environmental conference will focus on pesticide-free lawns and community spaces, organic community gardens and farming, cutting edge pesticide science, pesticides in schools, water contamination and more. Register online. Speaker Highlights ”¢ Cosmetic Pesticide Ban Organizers: In 2009, Ontario, Canada banned the use of over 250 pesticide products for cosmetic (lawn care) purposes. Forum participants will hear from Jan Kasperski, CEO of the Ontario College of Family Physicians, and Theresa McClenaghan, executive director of the Canadian Environmental Law Association, who fought to make this vision a reality. ”¢ “Food Sleuth” journalist: Registered dietitian, investigative nutritionist, and award-winning journalist Melinda Hemmelgarn will be addressing the benefits of eating organic and encouraging conference participants “think beyond their plates.” ”¢ Pesticide Researchers: The Forum will feature talks by several renowned pesticide researchers including Paul Winchester, MD, professor of clinical pediatrics Indiana University School of Medicine who authored the April 2009 study linking birth defects, pesticides and season […]