Search Results
Wednesday, February 4th, 2026
(Beyond Pesticides, February 4, 2026) Using data from the Agricultural Health Study (AHS) database launched in 1993 by the National Cancer Institute and the National Institute of Environmental Health Sciences, research study results “show greater diabetes risk“ from exposure to organochlorine, organophosphate, and carbamate insecticides, phenoxy and other herbicides, and the fumigant carbon tetrachloride/disulfide exposure. The study, published in Environment International, evaluated nearly 4,000 diabetes cases drawn from AHS follow-up surveys between 1999 and 2021. Results Researchers found evidence of an association between 18 pesticide active ingredients and diabetes. These included two phenoxy herbicides, 2,4,5-T and 2,4,5-TP, and seven organochlorine insecticides (DDT, aldrin, dieldrin, chlordane, heptachlor, toxaphene, and lindane). While all these organochlorine pesticides are banned for use in the U.S. (with the exception of pharmaceutical uses of lindane), legacy residues of the chemicals and/or their metabolites continue show up in the environment, food, and the human body, and 2,4,5-T and its TCDD dioxin contaminant has multigenerational effects. There was exposure risks among other pesticides were identified as well, including: 3 organophosphate insecticides (diazinon, malathion, and phorate); 2 carbamate insecticides (carbofuran and carbaryl); 3 other herbicides (butylate, metribuzin, and chlorimuron ethyl); and the fumigant carbon tetrachloride/disulfide. The median age of […]
Posted in Aldrin, Carbamates, Carbaryl, Carbofuran, Chlordane, DDT, Diabetes, Diazinon, Dieldrin, Disease/Health Effects, Fumigants, Fungicides, Heptachlor, Herbicides, Insecticides, Lindane, Malathion, Phorate, toxaphene, Uncategorized | No Comments »
Tuesday, January 27th, 2026
(Beyond Pesticides, January 27, 2026) A three-part study published in Molecular Neurodegeneration draws a connection between Parkinson’s disease (PD) and the organophosphate chlorpyrifos. “Since chlorpyrifos (CPF) exposure has been implicated as a risk factor for PD, we investigated its association to incident PD and if this association is biologically plausible using human, rodent, and zebrafish (ZF) studies,” the researchers state. Together, the three experiments “strongly implicate exposure to CPF as a risk factor for developing PD,” as the authors find that exposure, even at very low concentrations, causes selective toxicity to dopaminergic neurons that are critical for functions of movement, cognition, emotion, and more. The results reveal that in humans, long-term residential exposure is associated with more than a 2.5-fold increased risk of developing PD, while exposure in mice causes “motor impairment, dopaminergic neuron loss, microglial activation, and an increase in pathological α-synuclein (α-syn) [proteins primarily found in the brain].” The researchers continue, “Using ZF, we found that CPF-induced dopaminergic neuron loss was at least partially due to autophagy dysfunction and synuclein accumulation, as knocking down LC3 [a protein chain] recapitulated the dopaminergic neuron loss.” These three studies highlight the association of CPF with increased risks for developing PD, as […]
Posted in Agriculture, Aquatic Organisms, behavioral and cognitive effects, Brain Effects, California, Chlorpyrifos, fish, Insecticides, organophosphate, Parkinson's | No Comments »
Friday, November 14th, 2025
(Beyond Pesticides, November 14, 2025) A literature review in Ecotoxicology and Environmental Safety finds a sex-specific relationship between pesticide exposure and thyroid cancer, with heightened risks for women. “Thyroid cancer (TC) is one of the most common endocrine malignancies worldwide, yet the association between pesticide exposure and TC has not been systematically summarized,” the authors state. “This study aimed to elucidate the relationship between pesticide exposure and TC, focusing on insecticides, herbicides, and fungicides.” In the U.S., approximately 44,020 new cases and 2,290 deaths are estimated for 2025, according to the American Cancer Society, with thyroid cancer as the ninth most common cancer in women. (See research here.) TC ranks globally as the tenth most common cancer, representing a worldwide threat to both men and women. (See here.) The current study considers scientific literature on thyroid cancer and pesticide exposure by pesticide type to extract data and statistically analyze the link between exposure and risk of TC. The results indicate a positive association between exposure to insecticides, herbicides, and fungicides and thyroid cancer, with the sex-based analysis revealing the risk of TC is higher in females. Study Background and Importance As the researchers write, thyroid cancer “is one of the […]
Posted in Biomonitoring, Cancer, Endocrine Disruption, Endosulfan, Fungicides, Herbicides, Insecticides, Malathion, Oxidative Stress, Thyroid Disease, Women's Health | No Comments »
Friday, November 7th, 2025
(Beyond Pesticides, November 7, 2025) There is little dispute that modern industrial culture has produced a constellation of related chronic conditions contributing powerfully to human disease. In recent decades, attention has begun to focus on the developmental origins of health and disease—prenatal exposures to pesticides, for example, that contribute to diseases in adulthood, such as cardiovascular and metabolic problems, along with the combination, known as cardiometabolic syndrome. Cardiometabolic disorders include obesity, hypertension, cholesterol imbalances, and insulin resistance. The usual suspects blamed for the syndrome are poor diet, physical inactivity, and genetic predisposition. These are all well-established risk factors, but they fail to fully account for the sharp rise in cardiometabolic syndrome globally. Obesity prevalence has doubled and diabetes quadrupled over the last 40 years, according to the Non-Communicable Diseases (NCD) Risk Factor Collaboration. In a study on early life exposure to a pesticide mixture, researchers analyze sex differences in cardiometabolic outcomes from prenatal and early life. The study was conducted by an international team of scientists led by Ana M. Mora, M.D., of the Center for Environmental Research and Community Health at the University of California, Berkeley, using data from the Center for the Health Assessment of Mothers and Children of […]
Posted in Agriculture, Children, Glyphosate, Malathion, metabolic syndrome, Obesity, organophosphate, Permethrin, pyrethroids, Uncategorized | No Comments »
Friday, October 31st, 2025
(Beyond Pesticides, October 31, 2025) A review in Lancet Neurology provides a clear snapshot of the state of scientific understanding of Parkinson’s disease and how medicine and policy could be improved by shifting focus to the primary causes of the disease, namely environmental toxicants, and to emphasize prevention rather than devoting resources only to treatments and a cure. The study, led by Ray Dorsey, M.D. of the Atria Research and Global Health Institute and the University of Rochester Medical Center, focuses on three classes of environmental toxicants: pesticides, dry cleaning and degreasing chemicals, and air pollution. Because these are pollutants introduced by humans, the authors say, they should be controllable, and “Parkinson’s disease could be thus largely preventable.” According to the review, in the last five years, new evidence has accumulated about three types of pesticides of particular concern. They are not all insecticides, which is the pesticide category most associated with neurological damage. Paraquat is a herbicide used on corn, soybeans, and cotton. Rotenone is used to kill rats and insects. Organochlorine insecticides comprise the third class. The review notes that there are many other pesticides that are neurotoxic and may have common mechanisms of action leading to Parkinson’s and […]
Posted in DDT, Dieldrin, Environmental Protection Agency (EPA), Nervous System Effects, Paraquat, Parkinson's, Rotenone, Uncategorized | No Comments »
Friday, October 24th, 2025
(Beyond Pesticides, October 24, 2025) A literature review published in Science of the Total Environment reports numerous peer-reviewed studies associating prenatal and childhood pesticide exposure to measurable alterations to children’s immune systems, including indicators of immunosuppression and increases in pro-inflammatory cytokines, among other adverse health effects. These immune system alterations are linked to higher infection risk and potentially contribute to autoimmune diseases and allergies later in life. For over four decades, Beyond Pesticides has tracked the peer-reviewed science and identified a preponderance of evidence linking pesticide and chemical-dependent pest management to adverse human and ecological health effects. In this spirit, public health and environmental advocates continue to call for a wholesale transition to organic land management and organic pest management as biodiversity, public health, and climate crises continue to mount. This mission supports the growth of the Parks for a Sustainable Future Program, where nineteen cities in eleven states across the country engage in pilot projects to transition parks, playing fields, and schoolyards to organic management practices and protect the health of children. Background and Methodology “This study aimed to evaluate the extent of immunotoxicity and correlation between exposure to pesticides and immune system alterations in children under five years […]
Posted in carbamate, Carbamates, Children, Children/Schools, Disease/Health Effects, Immunotoxicity, organochlorines, organophosphate, pyrethroids, Uncategorized | No Comments »
Thursday, October 23rd, 2025
(Beyond Pesticides, October 23, 2025) A global literature review of pesticide residues in marine seaweed, published in Marine Pollution Bulletin, highlights the widespread presence of pesticides in bioindicator species. As vital coastal primary producers, seaweed acts as a key indicator for regional pesticide contamination patterns. The bioaccumulation within seaweed species also threatens consumers, including humans, as the chemicals can biomagnify as they move through the food web. Pesticide contamination in waterways allows residues to bioaccumulate in seaweed species, presenting risks to public health, biodiversity, and ecosystem functioning. In addition to the support seaweeds provide for ecosystems, they provide food sources for a multitude of organisms and are of growing socioeconomic importance. “This systematic review identifies, critically evaluates, and synthesizes recent global literature (2015–2024) on pesticide residues detected in seaweeds to delineate contamination patterns,” the authors share. The findings highlight the harmful impacts of petrochemical pesticides on multiple species. Many aquatic species rely on seaweed as a food source, including fish, sea urchins, crabs, snails, brittle stars, and marine mammals such as manatees and sea turtles. Even bacteria and filter feeders consume seaweed when it is decomposed. Birds and land mammals also consume seaweed, including humans who utilize seaweed in various […]
Posted in Agriculture, Aldrin, Aquatic Organisms, Bifenthrin, Biodiversity, Chlordane, contamination, cypermethrin, DDT, Ecosystem Services, Endosulfan, hexachlorocyclohexane (HCH), Oceans, organochlorines, pyrethroids, Synthetic Pyrethroid, Uncategorized, Water, Wildlife/Endangered Sp. | No Comments »
Wednesday, September 17th, 2025
(Beyond Pesticides, September 17, 2025) A study in Environmental Science & Technology finds additive effects of a synthetic pyrethroid insecticide (cypermethrin) and two fungicides (azoxystrobin and prochloraz) on biological control, biomass of major invertebrate trophic groups (position in food web), and soil ecosystem processes in arable systems (land suitable for growing crops). The study authors further highlight the failure of pesticide regulations to consider elaborate trophic interactions and pesticide mixtures, as well as additive and synergistic effects within their assessments, calling attention to the complexity of real-world exposures and the lack of research to fully understand the implications of chemical use for agricultural and land management purposes. “Arable systems have a high dependence on diverse natural biota to support pest control, soil bioturbation, and nutrient recycling,” the researchers write. These communities rely on a balance of organisms within various trophic levels in order to function and provide vital ecosystem services. Disruptions caused by environmental contaminants, such as pesticides to nontarget organisms, impact entire ecosystems and overall biodiversity. As the authors state, current risk assessments underestimate the real-world risks of petrochemical pesticides and synthetic fertilizers that, despite a wide body of science connecting exposure to deleterious health and environmental effects, are […]
Posted in Agriculture, Aphids, Azoxystrobin, Beneficials, Biodiversity, Biological Control, cypermethrin, Ecosystem Services, Environmental Protection Agency (EPA), Fungicides, Pesticide Mixtures, synergistic effects, Synthetic Pyrethroid | No Comments »
Thursday, August 21st, 2025
(Beyond Pesticides, August 21, 2025) The presence of Varroa mites in combination with the neonicotinoid insecticide imidacloprid increases the risk of bee mortality and disrupts the larval gut microbiome, according to a study of the synergy (a greater combined effect) between Varroa destructor, a parasitic mite that attacks and feeds on honey bees, and imidacloprid. The study in Pesticide Biochemistry and Physiology adds to the growing body of science on the severely declining bee population by investigating the toxic effects of both the parasites and pesticide stressors in honey bees (Apis mellifera). “Given that V. destructor may increase bees’ sensitivity to imidacloprid by compromising their physiological health and immunity, this study systematically assesses the effects of V. destructor infestation and imidacloprid exposure on honey bee survival, detoxification enzyme activity, and gut microbiota,” the authors explain. The intestinal tract and gut microbiome are crucial for digestion, metabolism, nutrient absorption, immune regulation, and pathogen defense. Within honey bees, the gut microbiome is “highly susceptible to external environmental stressors, such as pesticide exposure and parasitic infections [and] these disturbances can lead to microbial imbalances, ultimately affecting bee health.” (See studies here and here.) Previous research earlier this year, captured in Daily News Variability […]
Posted in Beneficials, Biodiversity, Imidacloprid, Microbiome, neonicotinoids, Pollinators, synergistic effects | No Comments »
Thursday, August 14th, 2025
(Beyond Pesticides, August 14, 2025) A review in Clinical and Experimental Obstetrics & Gynecology links various classes of environmental pollutants including pesticides and per- and polyfluoroalkyl substances (PFAS), both of which Beyond Pesticides has extensively covered, to adverse effects on the female reproductive system and common mechanisms of toxicity. These chemicals “disrupt the hypothalamic-pituitary-gonadal axis (HPG), impair ovarian function, and contribute to reproductive dysfunction through mechanisms such as oxidative stress, hormonal disruption, and epigenetic [gene expression or behavior] modifications,” the authors say. This leads to menstrual irregularities, infertility, and pregnancy complications, as well as increases in the risk of reproductive system disorders such as endometriosis, polycystic ovary syndrome (PCOS), and ovarian cancer, among others. “Additionally, transgenerational effects mediated by epigenetic modifications, germ cell damage, and placental transfer may adversely affect offspring health, increasing the risk of reproductive dysfunction, neurodevelopmental disorders, metabolic diseases, and cancer,” the researchers explain. This study, integrating recent epidemiological and experimental findings, provides an overview of major chemical classes that threaten women’s health and highlights the need for immediate action. As the authors point out, female reproductive health is important not only for those who choose to plan for a family but also for the overall well-being […]
Posted in Birth defects, Cancer, contamination, Developmental Disorders, DNA Damage, Endocrine Disruption, Epigenetic, Glyphosate, Infertility, Miscarriage, multi-generational effects, organochlorines, organophosphate, Oxidative Stress, PCOS, Reproductive Health, synergistic effects, Women's Health | No Comments »
Thursday, August 7th, 2025
(Beyond Pesticides, August 7, 2025) The novel study published in Arthritis & Rheumatology is the largest investigation of rheumatoid arthritis (RA) in women to date, finding evidence of heightened risks when exposed to insecticides through data collected from over 400 eligible women in the Agricultural Health Study (AHS). AHS participants include a cohort of thousands of licensed pesticide applicators and their spouses from Iowa and North Carolina, with this particular study as the first to consider the link between pesticide exposure and RA as it affects women’s health. “Growing evidence suggests farming and agricultural pesticide use may be associated with rheumatoid arthritis (RA), but few studies have examined specific pesticides and RA among farm women, who may personally use pesticides or be indirectly exposed,” the study authors explain. The findings reveal that organochlorine insecticides that continue to persist in the environment, as well as organophosphate and synthetic pyrethroid pesticides used in public health or residential settings, correlate with RA diagnoses in women. As shared in previous Daily News, for the most part organochlorine pesticides, including dichlorodiphenyltrichloroethane (DDT), are no longer used worldwide, but the legacy of their poisoning and contamination persists. These compounds are primarily made up of chlorine atoms, […]
Posted in Agriculture, Alternatives/Organics, Arthritis/Joint Inflammation, Carbamates, Carbaryl, Carbofuran, Coumaphos, DDT, Fungicides, Lindane, Malathion, mancozeb, Maneb, Metalaxyl, organochlorines, organophosphate, Permethrin, pyrethroids, Rheumatoid arthritis, Synthetic Pyrethroid, Women's Health | No Comments »
Wednesday, August 6th, 2025
(Beyond Pesticides, August 6, 2025) A study published in Science of The Total Environment finds that “chronic pesticide exposure alters metabolism and impairs fish growth and health.” With increasing concern about the long-term consequences of pesticide persistence in ecosystems, the scientific literature continues to expand the body of research findings on adverse effects, including impacts on marine or aquatic ecosystems and organisms. Given the known and growing risks, there is an ongoing movement to move beyond petrochemical-based chemicals for agriculture and land management by adopting policies and programs that advance organic criteria and principles, as outlined in national organic law and practiced by tens of thousands of certified farmers and land managers across the country, and even more at the international level. Background and Methodology “The objective of this study was to assess the physiological responses of juvenile P. lineatus exposed to environmentally relevant pesticide mixtures by integrating multiple biological endpoints across sub-individual and organismal levels,” the authors write. The study was conducted at two sites in the Tibagi River watershed located in Paraná, a southern region in Brazil. There was a reference site (RFS) and an agricultural site (AGS), the former having minimal pesticide contamination and the latter having […]
Posted in Carbendazim, Drift, Endosulfan, Fipronil, Pesticide Drift, Uncategorized, Water, Water Regulation | No Comments »
Wednesday, July 30th, 2025
(Beyond Pesticides, July 30, 2025) The definition of per- and polyfluoroalkyl substances (PFAS), also known as “forever chemicals” due to their persistence, continues to be debated in regulatory agencies, with many scientists arguing that certain types of chemicals in this vast group are not accurately captured in risk assessments. A wide body of science on the adverse health and environmental effects of PFAS exists, as these synthetic chemicals have become ubiquitous in nature, wildlife, and humans, as demonstrated by biomonitoring studies. Recent research, documented in a literature review in Environmental Science & Technology and additional articles, highlights the importance of a universal, cohesive definition of PFAS that incorporates all fluorinated compounds, including the long carbon chain PFOA (perfluorooactanoic acid) and PFOS (perfluorooctanesulfonic acid) as well as the ultrashort-chain perfluoroalkyl acids (PFAAs). In order to protect health and the environment from the ever-increasing threat of both long and short chain PFAS’ adverse effects, including cancer, endocrine-disrupting effects, and immune system damage, a comprehensive definition of the compounds causing harm is critical to adequate protection and regulatory decisions. The multitude of sources of PFAS and various exposure routes leads to widespread contamination of the environment and organisms. PFAS in agriculture represents a […]
Posted in Agriculture, Biodiversity, Biomonitoring, Cancer, contamination, Drinking Water, Endocrine Disruption, Immunotoxicity, PFAS, Water | No Comments »
Tuesday, July 29th, 2025
(Beyond Pesticides, July 29, 2025) Are neurological diseases increasing around the world? Yes and no, according to a report published by The Lancet in 2024 on the global burden of nervous system diseases between 1990 and 2021. About 3 billion—a third of the world’s people—suffer from some nervous system condition. These diseases cause 11 million deaths and 443 million disability-adjusted life years (DALYs), which are a measure of the years lost to illness, disability, or early death. Neurological disorders are now the world’s largest source of disability. The Lancet report does not include an analysis of the role of pesticides in the burden of neurological disease worldwide, although environmental health research continues to expand the evidence that pesticide exposure is a major contributor to that burden. The Lancet report indicates that DALYs from Parkinson’s disease have increased by 10 percent, and autism spectrum disorder and dementia by 2 percent each. Multiple sclerosis has declined by 11 percent, according to the report. Importantly, most of the improvement has come from medical interventions, not prevention—in other words, people are living longer with the diseases rather than avoiding them altogether. But this is not true globally: The burden of disease, and particularly premature death, […]
Posted in Environmental Protection Agency (EPA), Nervous System Effects | No Comments »
Tuesday, July 22nd, 2025
(Beyond Pesticides, July 22, 2025) A study published in May by Nature Reviews Endocrinology warns that endocrine-disrupting chemicals (EDCs)—substances that lead to disruption of the endocrine system in an organism—are driving a rapid rise in female reproductive disorders. While EDCs encompass many different forms of chemicals, such as plastic additives, cigarette smoke, and paracetamol, pesticides are among the most common EDCs. The review pays special attention to pesticide classes such as per-and polyfluoroalkyl substances (PFAS) and organochlorines to evaluate how they derail ovarian development, puberty timing, and hormonal balance across the entire female lifespan. Many pesticides are fluorinated, and therefore classified as PFAS. Background Pesticides represent one of the largest sources of EDC exposure. Many persistent organic pollutants (POPs) are resistant to degradation and are capable of bioaccumulating in the food chain, which leads to these harmful chemicals being found in human adipose tissue. The study notes that these chemicals have also been detected in human blood, breast milk, follicular fluid, and other biological samples, explaining their prevalent presence in the human body. The review emphasizes that humans are exposed to a mixture of EDCs across their lifespan, yet current U.S. regulatory strategies do not fully account for combined lifetime […]
Posted in Endocrine Disruption, Infertility, PCOS, Reproductive Health, Uncategorized, Women's Health | No Comments »
Thursday, July 17th, 2025
(Beyond Pesticides, July 17, 2025) The widespread use of pesticides year-after-year, decade-after-decade, has been found to lead to unintended consequences not only for public health but also for broader ecosystem stability and biodiversity. These impacts include potential nontarget harm through adverse developmental and reproductive effects on the vinegar fly, Drosophila melanogaster, the subject of a peer-reviewed study in Royal Society Open Science. The authors, who studied the organochlorine fungicide chlorothalonil, conclude, “Chlorothalonil exposure decreases larval survival, extends developmental duration and reduces fecundity.” “Even at the lowest tested concentration, chlorothalonil exposure resulted in reduced body weight, ovariole count and egg production compared with non-exposed individuals,” the researchers find. This study builds upon years of scientific research findings and critiques of existing federal pesticide law, as well as the U.S. Environmental Protection Agency’s (EPA) failure to fully assess the adverse impacts on biodiversity and ecosystem stability during the pesticide registration review process. Methodology and Background The goal of this study is to evaluate the health impacts on a nontarget insect species (Drosophila melanogaster) from chronic exposure to chlorothalonil. This specific fungicide was chosen for various reasons, including its wide use across cereals, vegetables, and fruits; evidence linked to adverse health effects on […]
Posted in Biodiversity, Chlorothalonil, Drift, Environmental Protection Agency (EPA), Fungicides, Pesticide Drift, Pollinators, Uncategorized | No Comments »
Friday, July 11th, 2025
(Beyond Pesticides, July 11, 2025) Pesticides and antibiotics are linked inextricably in the looming crisis of human and ecosystem health. Both started out as quasi-miraculous solutions to age-old human problems, yet it has been clear that the failures of each present severe challenges—and that they are synergistic because they trigger the same kinds of defensive mechanisms in their targets: insects, fungi, and weeds on the one hand, and microbes on the other. A review of contamination of waterways in India with pesticides and antibiotics, published in Environmental and Geochemical Health, recounts the many threats that arise when these chemicals mix and how their presence in water makes the problems much worse. Globally, about five million people died in 2019 from infections with antibiotic-resistant microbes. By 2050, according to a World Bank estimate, antibiotic resistance could add $1 trillion to global health care costs and subtract $3.4 trillion from annual global gross domestic product. While the world slowly realizes the urgent need to counter antibiotic resistance, the role of pesticides in generating it has received less political and public attention. But there is no doubt that pesticides are strongly implicated. In fact, the resistance of microbes to antibiotics is no […]
Posted in 2,4-D, Agriculture, Antibiotic Resistance, Antimicrobial, Aquaculture, Dicamba, Endosulfan, Fungicides, Glyphosate, Hydroponics, Uncategorized, Water | No Comments »
Wednesday, July 9th, 2025
(Beyond Pesticides, July 9, 2025) Policymakers in Tanzania are calling for increased investments in organic agriculture for the 2025/26 fiscal year budget, demonstrating the increase in political will to advance new systems of farming and land management after decades of relying on Green Revolution-style, or chemical-intensive, policies. On June 20, various ministers representing the national government presented speeches to Parliament on the national government’s plan and budget recommendations, as well as highlighting the previous fiscal year’s trends and use of funds. Political and popular support for organic agricultural systems has gained momentum across the globe. Worldwide, organic farming practices quadrupled from 2000 to 2018, with over 180 countries supporting a global transition to organic agriculture. Newly published global survey data by the Research Institute of Organic Agriculture (FiBL) and International Federation of Organic Agriculture Movements – Organics International (IFOAM) reveal global organic agriculture to be at an all-time high, with 71.5 million hectares of farmland in production as of 2020. (See Daily News here). Farmer and agricultural cooperatives around the world, from Brazil to Madagascar and Togo, leverage organic systems to develop competitive business models in regional, national, and international markets. (See Daily News here.) The European Union, with […]
Posted in Agriculture, Aldrin, Chemical Mixtures, Chlordane, Chlorpyrifos, DDT, Dieldrin, Endosulfan, Heptachlor, hexachlorobenzene (HCB), International, lambda-cyhalothrin, organochlorines, Tanzania, Uncategorized | No Comments »
Tuesday, July 1st, 2025
(Beyond Pesticides, July 1, 2025) Published in Water Research, a study highlights the various routes for pesticide contamination, with the results identifying the presence of over 80 substances in streams without adjacent agricultural land use. “Our findings underscore the necessity of further investigating the non-agricultural entry pathways of pesticides and biocides to effectively mitigate their impacts on streams in non-agricultural catchments,” the authors state. They continue, “These streams often serve as critical refuge habitats and sources of recolonization, making their protection essential for biodiversity conservation.” In analyzing nonagricultural streams, the researchers find pesticide contamination that, while lower than levels found in streams directly next to agricultural land, can occur through various routes and threatens biodiversity in essential ecosystems. As the authors describe: “Although pesticide concentrations were lower than in agricultural streams, the potential toxicity of pesticides was associated with a significant reduction in sensitive insect populations, as indicated by the SPEARpesticides index. Notably, 40% of the studied streams did not achieve a good status according to the pesticide specific SPEARpesticides indicator.” The SPEARpesticides indicator is used “to identify pesticide effects on the aquatic invertebrate community. It measures the abundance of pesticide-sensitive species (“species at risk”) in relation to the abundance […]
Posted in Agriculture, Aquatic Organisms, Beneficials, Biodiversity, Drift, Fipronil, Germany, Methidathion, Mevinphos, neonicotinoids, Pesticide Drift, Water | No Comments »
Friday, June 13th, 2025
(Beyond Pesticides, June 13, 2025) A report highlights the ongoing stress to the Chesapeake Bay Watershed from pollutants, particularly pesticides. The Chesapeake Bay is the largest estuary in the contiguous United States, with tributaries shared among six states and the District of Columbia. It receives runoff from nine major river systems traversing a wide mix of land uses, with significant agricultural and urban areas nearest the Bay and forest along the western boundary. Nearly 13 million people get their drinking water from the watershed. The watershed report by the Maryland Pesticide Education Network focuses primarily on the herbicide atrazine, the neonicotinoid insecticide thiamethoxam, and per- and polyfluorinated compounds (PFAS). Atrazine needs little introduction, being notorious for disrupting hormones, particularly estrogen, as demonstrated by the pioneering work of Tyrone Hayes and more recent research analyzed by Beyond Pesticides here, here and here. In male fish, it can trigger production of egg proteins, especially vitellogenin, and development of eggs in their testicles. These are manifestations of intersex, in which an organism shows forms of sexual differentiation of both sexes. The Chesapeake watershed report notes that atrazine and metolachlor (also an estrogen/androgen disruptor and suspected human carcinogen) occur together frequently in the Chesapeake […]
Posted in Atrazine, Cancer, Deleware, Endocrine Disruption, Environmental Protection Agency (EPA), Maryland, neonicotinoids, New York, Pennsylvania, PFAS, Uncategorized, Virginia, Washington D.C., West Virginia | 2 Comments »
Wednesday, June 11th, 2025
(Beyond Pesticides, June 11, 2025) Researchers developed a novel tool* in a recent study published in Nature Communications this year that successfully creates a map of the “pesticide-gut microbiota-metabolite network,” identifying “significant alterations in gut bacteria metabolism.” While the study authors acknowledge that this is not a complete map, since they selected specific pesticides and bacterial partners, the research adds to the body of peer-reviewed scientific literature that underscores the relationship between pesticide residues and human gut health. Organic farmers, as well as any land steward invested in agroecological practices and soil health, understand that microbial life (both in the body and in the soil) is dangerously undermined by the status quo of chemical-intensive land management. Background and Methodology The researchers leverage mass spectrometry to test metabolite (metabolomics) and lipid (lipidomics) relationships with pesticide residues, as well as an in vivo mouse model. *The map itself is a form of computational biology, which advocates have warned could be a false solution if not accompanied by other proven scientific methods. See here for analysis by the Natural Resources Defense Council on risks of unproven methods such as New Approach Methodologies [NAMs]. All major phylogenetic (“evolutionary relationships among biological entities”) groups are […]
Posted in Chlorpyrifos, cypermethrin, DDT, Diazinon, Dichlorvos, Endosulfan, Glyphosate, Malathion, Metabolites, methoxychlor, Microbiata, Microbiome, Parathion, Permethrin, Uncategorized | No Comments »
Thursday, May 22nd, 2025
(Beyond Pesticides, May 22, 2025) A medical study published in the Journal of the American Medical Association (JAMA) finds that “living within 1 mile of a golf course was associated with 126% increased odds of developing PD [Parkinson’s Disease] compared with individuals living more than 6 miles away from a golf course.” While organic land management offers a simple solution, current pesticide restrictions do not address chronic neurological diseases such as Parkinson’s Disease, which are linked to pesticide exposure. It has become increasingly clear that viable and cost-effective land management practices, including for golf course management, are critical to the protection of community health. Yet, the federal regulatory agencies, including the U.S. Environmental Protection Agency (EPA) and U.S. Food and Drug Administration (FDA), do not conduct an alternative practices assessment as part of their review process to determine whether the risks are “reasonable” (statutory language) or the risk assessments accept an unnecessary hazard. The complexity of pesticide exposure, which includes mixtures of multiple chemicals and undisclosed hazardous “inert” ingredients, raises broad questions about the threats to public health as well as biodiversity. See a recent Action of the Week, FDA Must Establish Tolerances for Pesticides Used in Mixtures, to see […]
Posted in 2,4-D, Chemical Mixtures, Chemicals, Chlorpyrifos, Disease/Health Effects, Drift, Golf, Paraquat, Parkinson's, Pesticide Drift, Uncategorized | 2 Comments »
Friday, May 9th, 2025
(Beyond Pesticides, May 9, 2025) Research in Advances in Modern Agriculture showcases how pesticide residues can threaten the health of soil nematodes and cause phytotoxic effects in cucumber plants. In assessing both the sprayed vegetables and the organisms within the soil, the authors find a negative correlation between pesticide exposure and soil nematode populations that is proportional to the application rates of the chemicals, as well as alterations in plant development. These impacts highlight potential wider effects on crop productivity, biodiversity, and human health. “Nematodes, which are microscopic worms inhabiting the soil, are vital contributors to soil vitality and the cycling of nutrients,” the authors share. “Nonetheless, the non-selective and widespread application of pesticides can negatively impact these organisms, leading to potential detriments in soil quality and plant vitality.” “Pesticide residues have the propensity to be absorbed and progressively accumulate as they traverse from soil to plants and subsequently to humans,” the researchers state. They continue, “The specific characteristics of the pesticide and its interactions with the body across different levels dictate whether it will be excreted without causing significant harm or if it will accumulate, potentially leading to enduring subclinical and clinical ramifications.” The impacts vary widely between organisms […]
Posted in Agriculture, Beneficials, Biodiversity, Diazinon, Ecosystem Services, Endosulfan, Malathion, methoxychlor, Microbiome, Pesticide Residues, soil health, Soil microbiome | No Comments »