(Beyond Pesticides, August 12, 2020) The herbicide atrazine can interfere with the health and reproduction of marsupials (including kangaroos and opossums) kangaroo, Virginia opossum, according to research published in the journal Reproduction, Fertility, and Development. Although the research focuses on the health of the Australian wallaby, the data is relevant for the only marsupial in the United States, the opossum. Unfortunately, the research is no surprise, as atrazine has a long history of displaying endocrine (hormone) disrupting properties, affecting sex and reproduction in a broad range of species. The study, under the auspices of University of Melbourne Animal Experimentation and Ethics Committee, exposed pregnant female adult wallabies to atrazine through gestation, birth, and lactation. Doses of the weedkiller were slightly higher than real world models, but according to researchers, “It is quite possible a wild animal could get such an exposure.” Researchers then euthanized the newborn wallabies to study atrazine’s effects. The gonads and phallus of young wallabies were analyzed for any physiological changes or impacts to gene expression. Researchers found changes to the gene expression necessary for basic function of the testis, and a significant reduction in phallus length. “These results demonstrate that [atrazine] exposure during gestation and lactation can […]

(Beyond Pesticides, August 5, 2020) Regions of Australia that use a highly toxic rodenticide are home to larger dingoes than areas where the pesticide is not used, according to research published in the Biological Journal of the Linnean Society. Over the course of roughly the last century, dingoes in rodenticide-baited regions have grown by between six and nine percent. While pesticides are well known to induce changes in insect morphology as resistance is developed, this is one of the first studies to find effects on a large vertebrate carnivore. To make their determination, researchers began measuring the size of dingo skulls, which can be used as a proximate for body size, in areas where the rodenticide compound 1080 (sodium fluoroacetate) was and was not historically used. Skull analysis relied primarily on historical specimens stored in museums throughout Australia.   “Skulls from the baited regions grew by about four millimetres since poison baiting was introduced,” says Michael Letnic, PhD, lead author of the paper and professor in conservation biology and ecosystem restoration at the University of New South Wales Science. “This equates to roughly a kilogram [2.2 lbs] in body mass.” While size increases were consistently seen in baited regions, dingoes […]

(Beyond Pesticides, July 27, 2020) Evian bottled water, produced by the French company Danone, is supposed to be so pure that scientists will calibrate their measuring devices with it. But new data from Swiss researchers finds it to be contaminated with a toxic fungicide. “The fact that even the Evian springs in the French Alps, which are hardly affected by humans, contain pesticide residues is alarming and shows the far too careless handling of these substances,” Roman Wiget, president of the international drinking water association AWBR told the German-language Swiss weekly. The answer is not to simply ban another toxic pesticide, only to be followed by another toxic pesticide, but foundational changes to agriculture and land management with a shift to organic practices.  Tell Evian to protect water quality and the integrity of its purity claim by prominently supporting a worldwide shift to organic agriculture and land management. Danone claims that the purity of Evian bottled water comes from its source in Cachat Spring at the base of the French Alps in the town of Évian-les-Bains, France, where it is “[p]rotected under a fortress of geological layers built by glaciers 30,000 years ago, it slowly travels through natural snowy, glacial […]

(Beyond Pesticides, July 24, 2020) As the novel coronavirus pandemic has heightened awareness of infectious diseases, there is increased attention to connections between environmental concerns and such diseases, including factors that may exacerbate their transmission. New research shows one such relationship: the transmission of schistosomiasis, a tropical disease caused by contact with the larvae of parasitic worms (schistosomes), is likely accelerated by the use of pesticides and other agrochemicals (such as synthetic fertilizers). The study, published in The Lancet Planetary Health, also shows that contamination of freshwater bodies with these chemicals disturbs ecological balances that can actually limit schistosome infections. This new research underscores the urgency of the needed transition, in affected tropical and subtropical areas, to agricultural approaches that do not involve synthetic agrochemicals that pollute local waterways and put people’s health at increased risk. Beyond Pesticides recently covered another study, published in Nature’s Scientific Reports in February 2020, that indicates that agricultural pesticide runoff indirectly increases rates of transmission of schistosomiasis. The transmission landscape for this disease is complex, in part because one of the parasite’s vectors are freshwater snails, which: (1) play an important role in schistosomes’ life cycle, (2) are relatively resistant to the effects of pesticides, […]

(Beyond Pesticides, July 20, 2020) Does your community spray toxic pesticides for mosquitoes? In a well-intentioned but ill-informed attempt to prevent mosquito-borne illness such as West Nile virus, many communities spray insecticides (adulticides) designed to kill flying mosquitoes. If your community is one of these, then your public officials need to know that there is a better, more-effective, way to prevent mosquito breeding. Tell your public officials to stop spraying pesticides and adopt a mosquito management plan that protects public health and the environment. The problem with mosquito pesticides. Two classes of insecticides are favored by mosquito spray programs—organophosphates and synthetic pyrethroids. In order to better target flying mosquitoes, adulticides are generally applied as ultra-low-volume (ULV) formulations that will float in the air longer than usual.  Pesticides are toxic chemicals and can exacerbate respiratory illnesses like Covid-19.Organophosphates, which include malathion (Fyfanon), naled (Dibrom), and chlorpyrifos (Mosquitomist for public health uses only) are highly toxic pesticides that affect the central nervous, cardiovascular, and respiratory systems. Symptoms of poisoning in humans include numbness, tingling sensations, headache, dizziness, tremors, nausea, abdominal cramps, sweating, incoordination, blurred vision, difficulty breathing, slow heartbeat, loss of consciousness, incontinence, convulsions, and death. Some organophosphates have been linked to […]

(Beyond Pesticides, July 14, 2020) The Mexican government announced late last month that it plans to phase out the importation and use of glyphosate in the country over the next four years. The announcement means that Mexico will join other countries, such as Luxembourg, Vietnam, Germany in prohibiting the chemical and the toxic consumer products, like Roundup, that contain it as an ingredient. International watchdogs are keeping an eye on reactions from the United States, which in recent years has worked to intervene in other countries’ decision-making over toxic pesticides. The government’s announcement cites the Precautionary Principle as part of its decision-making. According to the Wingspread Statement on the Precautionary Principle, “Where an activity raises threats of harm to the environment or human health, precautionary measures should be taken even if some cause and effect relationships are not fully established scientifically.” In the case of glyphosate, there is strong evidence, per a 2015 review by the International Agency for Research on Cancer (IARC), that glyphosate is carcinogenic. Since 2015, several more publications have added weight to glyphosate’s link to cancer. A February 2018 meta-analysis finds “a compelling link between exposures to GBH [glyphosate-based herbicides] and increased risk of NHL [non-Hodgkin […]

(Beyond Pesticides, July 6, 2020) EPA’s proposed interim decision (PID) on the weed killer clopyralid is inadequate to protect human health, property, nontarget plants, and pollinators from damage. Clopyralid poses unreasonable adverse effects that cannot be remedied by EPA’s proposed fixes. It should be banned. Sign the petition by noon Monday, July 6! Tell EPA to ban the persistent toxic herbicide clopyralid. Clopyralid is a toxic persistent herbicide used to control broadleaf weeds on lawns and turf, range, pastures, right-of ways, and on several crops. Approximately 1.6 million pounds of clopyralid is used on 20 million acres per year in the U.S. on agricultural land, but it is also commonly used to kill dandelions, clover, and thistles. Lawn care operators applied over a million pounds of clopyralid in 2013. Clopyralid is notorious for causing damage to nontarget plants. The registration was modified in 2002 to delete residential turf uses from the clopyralid product label. Additionally, under the amended label professional applicators are required to notify property managers not to compost clippings from treated grass. EPA proposes to expand the prohibition to include school turf, but clopyralid products will continue to be used on golf courses and certain other forms of […]

(Beyond Pesticides, June 25, 2020) Facing approximately 125,000 lawsuits on cancer caused by the weed killer Roundup™ (glyphosate), Bayer/Monsanto announced yesterday that it will pay up to $10.9 billion to resolve current and potential future litigation. According to Bayer, the settlement will “bring closure” to approximately 75% of current Roundup™ litigation. “The company will make a payment of $8.8 billion to $9.6 billion to resolve the current Roundup™ litigation, including an allowance expected to cover unresolved claims, and $1.25 billion to support a separate class agreement to address potential future litigation,” according to Bayer’s press release. At the same time the company announced a $400 million settlement with farmers whose crops have been damaged by the weed killer dicamba and $820 million for PCB water litigation. Bayer is a German multinational pharmaceutical and chemical company that purchased Monsanto for $63 billion in 2018. Bayer’s stock price increased by 2.5% after the news of the settlements. Bayer Settles, but Defends the Safety of Roundup™As expected, Bayer is not acknowledging any harm caused by glyphosate. According to chief executive officer of Bayer, Werner Baumann, “The decision to resolve the Roundup™ litigation enables us to focus fully on the critical supply of healthcare […]

(Beyond Pesticides, June 12, 2020) New research finds that western monarch milkweed habitat contains a “ubiquity of pesticides” that are likely contributing to the decline of the iconic species. The research, published in Frontiers in Ecology and Evolution, provides a grim snapshot of a world awash in pesticides, and raises new questions about the U.S. regulatory process that continues to allow these toxic chemicals on to the market without adequate review and oversight. “We expected to find some pesticides in these plants, but we were rather surprised by the depth and extent of the contamination,” said Matt Forister, PhD, a butterfly expert, biology professor at the University of Nevada, Reno and co-author of the paper in a press release. “From roadsides, from yards, from wildlife refuges, even from plants bought at stores—doesn’t matter from where—it’s all loaded with chemicals. We have previously suggested that pesticides are involved in the decline of low elevation butterflies in California, but the ubiquity and diversity of pesticides we found in these milkweeds was a surprise,” Dr. Forister said. The researchers collected over 200 milkweed samples from nearly 20 different sites across the Central Valley of California, as well as from retailers that sell milkweed […]

(Beyond Pesticides, May 27, 2020) Research published last week in the journal Scientific Reports uncovers new ways that neonicotinoid (neonic) insecticides hamper the growth and development of honey bee colonies. As new data on the link between neonics and pollinator declines continues to flow from academic institutions, the U.S. Environmental Protection Agency (EPA) has re-opened the public comment period on its proposal to renew the registration of these highly toxic insecticides. The present study, led by German scientists at Goethe University Frankfurt am Main, uses new video techniques to observe the behavior of honey bees behind a glass-pane hive. Researchers filmed their study from start to finish, focusing on the effect of chronic sublethal doses of the neonciotinoids clothianidin and thiacloprid. Colonies were fed these chemicals in a sugar syrup over the course of three weeks in May and June. Even at low levels, scientists found significant changes to brood rearing and development, and the behavior of nurse bees. Nurse bees play a pivotal role in honey bee colonies. These young worker bees clean out old brood cells (where larvae develop), feed larval bees after a queen lays its eggs, and finish by capping a brood cell with wax. Within […]

(Beyond Pesticides, May 21, 2020) Use of the herbicide dicamba increases humans’ risk of various acute and chronic cancers, according to research published in the International Journal of Epidemiology by the National Institutes of Health (NIH). Many pesticides are “known or probable” carcinogens (cancer-causing agents), and their widespread use only amplifies chemical hazards, adversely affecting human health. However, past research lacks comprehensive information regarding human health effects associated with long-term pesticide use. This study highlights the significant role that long-term research plays in identifying potential health concerns surrounding registered pesticides, especially as the Environmental Protection Agency (EPA) plans to reaffirm its decision to allow dicamba use on genetically engineered (GE) crops. Nathan Donley, Ph.D., a scientist with the environmental health program at the Center for Biological Diversity, comments: “This sweeping study exposes the terrible human cost of the EPA’s reckless decision to expand the use of dicamba. […]For the EPA to approve widespread use of this poison across much of the country without assuring its safety to people and the environment is an absolute indictment of the agency’s persistent practice of rubber-stamping dangerous pesticides.” Dicamba—a benzoic acid chemical that controls broadleaf weeds—is one of the most widely applied herbicides in corn production. As a result of weed resistant to […]

(Beyond Pesticides, May 1, 2020) As the globe settles in for a long summer of social distancing to prevent the spread of COVID-19, experts warn that concentrated animal feeding operations (CAFOs), more commonly referred to as “factory farms,” are setting the table for the next pandemic. Crowded conditions and prophylactic use of antibiotics, scientists say, are creating an environment ripe for viruses and bacteria to evolve and jump from animal to human populations. The Food and Agriculture Organization of the United Nations said back in 2013, “Livestock health is the weakest link in our global health chain.” Alternatively, organic principles offer an existing federal guideline for ecologically and environmentally viable conditions for agriculture. Michael Greger, M.D., Ph.D., author of Bird Flu: A Virus of Our Own Hatching, explains, “When we overcrowd animals by the thousands, in cramped football-field-size sheds, to lie beak to beak or snout to snout, and there’s stress crippling their immune systems, and there’s ammonia from the decomposing waste burning their lungs, and there’s a lack of fresh air and sunlight — put all these factors together and you have a perfect-storm environment for the emergence and spread of disease.” Dr. Greger notes that the spread of […]

Experimental ponds in Gault Nature Reserve. Photo credit: Vincent Fugère (Beyond Pesticides, March 5, 2020) A new study conducted by researchers at McGill University investigated phytoplankton (microscopic algae) response and resilience to Roundup exposure. “Community rescue in experimental phytoplankton communities facing severe herbicide pollution” was published in Nature Ecology & Evolution. Researchers found that algae can develop resistance to contamination, but surviving phytoplankton communities are much less diverse. Diversity loss is cause for concern as it could hinder adaptation to other potential stressors, such as climate change.  Using experimental ponds, researchers first exposed some phytoplankton communities to low levels of Roundup over time, then dosed the ponds with a lethal amount.  Groups that had been given low doses survived the lethal phase whereas unpolluted, control ponds did not. Researchers observed “community rescue,” where genetic changes avert population collapse in a lethal environment. In fact, glyphosate eventually became a fertilizer in resistant ponds as it is a significant source of phosphorus. Other studies, too, have noted that phosphorous loading is an overlooked impact of glyphosate contamination. Phytoplankton matter because their disruption can cause a trophic cascade and impact other organisms. “These tiny species at the bottom of the food chain play […]

(Beyond Pesticides, February 12, 2020) Corteva, a company spun-off from DowDupont, will stop producing chlorpyrifos by the end of this year as a result of declining sales. Despite the move being in the interest of public health, the company is earning little praise from health advocates for what amounts to simply a shrewd financial decision. As news articles on the announcement have noted, Corteva will continue to support Environmental Protection Agency (EPA) registration of chlorpyrifos, which allows generic manufacturers to continue to sell this brain-damaging chemical. “Other people are going to continue to profit from harming children,” said Marisa Ordonia, an attorney with the group EarthJustice to Canada’s National Observer. “It is big that such a major player is saying no, we’re not going to do this any more. It’s a great signal that people don’t want brain-damaging pesticides on their food. But we’re going to continue to keep fighting to make sure children and farmworkers are protected.” At odds is the difference between halting production of chlorpyrifos and cancelling its EPA registration. While Corteva has the ability to voluntarily stop producing its own product, EPA registration permits other generic manufacturers to continue to producing the product. And, over the […]

(Beyond Pesticides, January 29, 2020) A study of male breast cancer (MBC) in Scotland reports an alarming, increasing trend of this rare disease – especially in agricultural areas. While only accounting for 1% of diagnosed breast cancer, MBC forms in the breast tissue of men and is often fatal because of delayed diagnosis and lack of research on male-specific treatment. The authors point to risk factors that include increased exposure to endocrine-disrupting chemicals, such as pesticides, and a need for further study. Researchers analyzed data from the Information Services Scotland database spanning from 1992-2017. Results showed that incidence of breast cancer in men rose with age, and that the total number and age-adjusted incidence of MBC increased in the last 25 years. Overall, the incidence rose by 38.5%. There was a total of 558 diagnoses in Scotland in the entire period. The trend is clearest in certain regions, including the North of Scotland and some rural areas. “Within the confines of this observational study, reasons for these regional differences are difficult to reconcile, but potential explanations are offered,” the authors write, “Exposure to environmental compounds that mimic oestrogens (so-called Endocrine-Disrupting Chemicals; (EDCs)) might be exacerbated in areas of higher agricultural […]

(Beyond Pesticides, January 17, 2020) In Brussels, the European Commission (EC) has just decided not to renew approval of the neonicotinoid pesticide thiacloprid, citing both environmental and health concerns related to use of and exposure to the pesticide. The decision was approved by a majority of European Union (EU) governments last fall, after the EC had made the proposal to them. The EC based that proposal on findings of the European Food Safety Authority (EFSA) published in January 2019, which highlighted concerns about toxicity to humans and high concentrations in groundwater. European Commissioner for Health and Food Safety Stella Kyriakides commented, “There are environmental concerns related to the use of this pesticide, particularly its impact on groundwater, but also related to human health, in reproductive toxicity.” The current EU use approval for thiacloprid products expires on April 30, 2020. The EC decision — functionally, a ban — means that farmers will need to turn to other means to deal with the primary thiacloprid targets in agriculture, aphids and whiteflies. Beyond Pesticides and many organic agricultural resources advocate for widespread adoption of organic, regenerative systems and practices. Such systems may include management features such as mechanical and biological controls, trap crops, natural […]

(Beyond Pesticides, December 17, 2019) South Asian immigrants to the U.S. may be at increased risk of diabetes due to prior exposure to high levels of DDT, research published by the University of California Davis earlier this month indicates. The study highlights a blind spot for health care in the U.S., researchers say. “Our findings evoke a new interpretation of Rachel Carson’s famous book Silent Spring, in that the high DDT exposures of South Asian immigrants in the U.S. currently fall on deaf ears in the U.S.,” said lead author Michele La Merrill, PhD an associate professor in the UC Davis Department of Environmental Toxicology. “Although DDT remains in use in other nations and migration globalizes these exposures, people in the U.S. often mistakenly regard DDT exposure as no longer relevant to our society due to its ban in this country nearly 50 years ago.” When compared to other race and ethnic groups, South Asian immigrants (individuals from India, Pakistan, Bangladesh, Nepal, Sri Lanka, and Bhutan), are at greater risk of developing diabetes, even when adjusting for potential confounders such as age and obesity. Authors of the study hypothesized that this was a result of past exposure to high levels […]

(Beyond Pesticides, October 9, 2019) Pesticide industry propaganda promoting the safety of glyphosate-based herbicides took another hit last month, as a study published by an international team of researchers found the chemical had the potential to induce breast cancer when combined with other risk factors. The study, Glyphosate Primes Mammary Cells for Tumorigenesis by Reprogramming the Epigenome in a TET3-Dependent Manner, led by scientists from Indiana’s Purdue University and the Institut National de la Santé et de la Recherche Médicale (INSERM)/Institut de Cancérologie de L’Ouest (ICO) in Nantes, France, provides an important new lens through which to view pesticide-induced cancer development. “This is a major result and nobody has ever shown this before,” says Sophie Lelièvre, PhD, a professor of cancer pharmacology in Purdue’s College of Veterinary Medicine and co-leader of IBCN. “Showing that glyphosate can trigger tumor growth, when combined with another frequently observed risk, is an important missing link when it comes to determining what causes cancer.” To make their determination, scientists exposed human breast cells low levels of glyphosate every three to four days over the course of 21 days. A control group was also dosed with a known cancer-promoting peptide. Glyphosate caused the same changes to exposed cells as […]

(Beyond Pesticides, October 2, 2019) New data gleaned from the Kuakini Honolulu Heart Program — a longitudinal study of men of Japanese descent living on Oahu — demonstrate that occupational exposure to high levels of pesticides can increase risks for cardiovascular disease (CVD) in the forms of coronary heart disease (CHD) or stroke (CVA, or cerebrovascular accident). Further, researchers determined both that workers who experience high-level exposures may not experience such effects for years afterward, and that the maximum subsequent effects were seen within a decade of exposure. The study’s conclusion highlights the importance of pesticide applicator use of protective gear when handling toxic pesticides. These risks and harms could be eliminated through a transition to non-chemical means for pest control in agriculture, land management, and home and personal practices. The Kuakini Honolulu Heart Program, after enrolling more than 8,000 Japanese-American men, 45–68 years old and living on Oahu, Hawaii between 1965 and 1968, has continued to examine and interview these subjects, and document morbidity and mortality among them. This study, which performed statistical analyses on 7,557 of the subjects, is the longest longitudinal study of cardiovascular disease and any association with chronic occupational pesticide exposure, taking into account epidemiologic risk […]

(Beyond Pesticides, September 24, 2019) In 2016, Canadians and Americans residing in Havana reported symptoms of headaches, dizziness, nausea. They described hearing strange buzzing and high-pitched sounds – some woke in the middle of the night fumbling for alarm clocks that were not going off. Media used the term “Havana syndrome” to describe the illness. Diplomats, scared by symptoms that seemed to only hit them in their hotel rooms or at home, speculated that a sonic weapon was being used against them. The Trump administration accused Cuban leaders of misconduct and removed all but essential employees. Later, some suspected that the diplomats could have experienced “mass hysteria.” A new Canadian study provides a more likely explanation to this mysterious illness that impacted diplomats in Havana: neurotoxic pesticide exposure. Researchers conducted testing on 14 individuals who had resided in Havana and a control group of 12 that had never lived there. Some of the experimental group had been recently exposed while others, tested 19 months after their return, were classified as “remotely exposed.” Tests included brain imaging and self-reported symptom questionnaires. They analyzed blood samples for routine biochemistry, kidney, liver, and metabolic functions. Individuals that showed symptoms of brain injury went […]

(Beyond Pesticides, September 17, 2019) The poisonous farm fields migratory birds forage on during their journey reduce their weight, delay their travel, and ultimately jeopardize their survival, according to new research published in the journal Science.  Like their effects on pollinator populations, neonicotinoid insecticides generally are not killing migratory songbirds outright, but instead precipitating a cascade of sublethal impacts that reduces their fitness in the wild. As the authors told Environmental Health News, the study is a call not simply to ban neonics or one class of chemical, but to change the entire farming system toward more sustainable bird and bee-friendly practices. Using new technology, this study was not only able to dose wild-caught songbirds (white-crowned sparrows), but also track their migration route using automated telemetry. Apart from the control group that received no pesticide exposure, sparrows were treated at levels well below the median lethal dose (3% of the lethal dose in the ‘low’ exposure group and 10% within the ‘high’ exposure group), and permitted to continue on their migratory path. These are exposure amounts similar to a songbird accidentally ingesting a few treated seeds, according to the study. Within six hours, both the ‘low’ and ‘high’ exposure group […]

(Beyond Pesticides, September 11, 2019) Germany is the latest entity to take action on getting glyphosate-based pesticides out of the marketplace. Chancellor Angela Merkel has announced that, beginning in 2020, the country will phase out herbicides that contain glyphosate by the end of 2023. The phase-out will occur through a series of scheduled reductions in amounts allowed for use, with a goal of a 75% reduction over the next four years. The announcement comes after “nation-wide protests and demands from [Merkel’s] junior coalition partner, the Social Democrats, for more decisive action on environmental issues.” This action stands in telling contrast to the U.S. Environmental Protection Agency’s (EPA’s) repeated failures to protect people, ecosystems, and our food supply, from this toxic compound. The German government also plans to oppose any European Union (EU) request for renewal of licensing of these herbicides, according to the environment ministry. Bayer AG, maker of glyphosate-based herbicides and owner of original manufacturer Monsanto, has pushed back, saying that the government is “getting ahead of itself” by banning glyphosate-based herbicides prior to any decision by the relevant EU authority, and that EU laws disallow unilateral decisions by member states. (Pesticide licensing decisions lie with EU governance in Brussels, […]

(Beyond Pesticides, September 10, 2019) Monarch populations on both coasts of North America are in serious decline, and new research indicates that same chemicals killing bees may be responsible for similar impacts to these charismatic butterflies.  Published in the journal Insects by Washington State University researcher David James, PhD, the study is the first to investigate how adult monarchs react to chronic, low dose exposure to the neonicotinoid insecticide imidacloprid. Many are calling the decline of pollinators and other insect species a form of apocalypse and mass extinction. What’s happening with insects must be considered a warning for species higher up in the food chain; it’s therefore critical that our observations of the natural world lead to corrective action before it’s too late. Monarchs in the study were reared from untreated milkweed plants in Washington State in 2018, totaling 40 adult butterflies. Eleven males and the same number of females were assigned to be treated with the insecticide, while the remaining butterflies acted as a control. Both groups were provided a sugar solution, with the treated group’s solution containing 23.5 parts per billion imidacloprid, a dose similar to what a butterfly could encounter in a real world scenario. Monarchs that […]