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Daily News Blog

Archive for the 'Chemicals' Category


25
Nov

Report Links Prostate Cancer, Crashing Sperm Count to Pesticides; Medical Author To Speak at Dec. 4 Webinar

(Beyond Pesticides, November 25, 2025) Chemical pollution is having a profound impact on men’s overall health and reproductive function. Endocrine-disrupting chemicals—which prominently include pesticides—are a major factor. The Health and Environment Alliance (HEAL) a European organization funded by the European Union (EU) and several private foundations, has issued a strong call for attention to – and action on – the precipitous decline in male reproductive health owing to chemical exposures, including pesticides. In a new report, Chemical pollution and men’s health: A hidden crisis in Europe, the group states, “The scientific evidence is clear. The costs of chemical pollution – human and economic – are mounting. The solutions exist. What we need now is the political will to act.” The report was written by Rosaella Cannarella, M.D., PhD, an endocrinologist at the Division of Endocrinology, Metabolic Diseases and Nutrition, University of Catania (Italy). HEAL’s report details alarming indications of catastrophe in male reproductive health: prostate cancer, testicular cancer, crashing sperm counts, and numerous developmental problems including cryptorchidism, urogenital malformations, and hypospadias. The report highlights pesticides, microplastics, phthalates, bisphenols, PFAS and heavy metals as the likely environmental sources of the crisis. There is evidence that all of these endocrine disrupting chemicals […]

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24
Nov

Beyond Pesticides Calls on Governors To Restore Ecological Balance with Land Management Practices

(Beyond Pesticides, November 24, 2025) In his article on ecological traps, Professor Danilo Russo, PhD, explains the harm caused to wildlife from well-intentioned efforts to establish habitat on chemical-intensive farms or areas otherwise subject to chemical exposure. Dr. Russo et al., in “To improve or not to improve? The dilemma of “bat-friendly” farmland potentially becoming an ecological trap” (2024), write, “[W]hen restoring habitats for bats in conventional farmland, potential unintended outcomes must be considered, particularly if restoration actions are not accompanied by mitigation of key threats. These threats include the persistent and widespread use of pesticides. . .” (See also a study in Environmental Entomology, which shows that habitat and open space near agricultural fields become a killing field of pesticides, threatening biodiversity due to contamination from toxic drift.) As this false sense of protection persists, Beyond Pesticides is calling on governors to adopt policies that support organic land management and ecological balance. Organic practices are, by definition, a systems change that is aligned with nature and the biodiversity protection that is needed. Ecological traps are incremental steps that fail to address underlying systemic problems that allow hazards to persist. While they represent an affirmative action in an attempt to adopt restorative measures, the […]

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20
Nov

Hazardous Compounds Formed with Pesticide Use, Studies Find, But Overlooked in Safety Reviews

(Beyond Pesticides, November 20, 2025) Recent scientific literature finds heightened toxicity associated with pesticide metabolites, the transformation/breakdown products of the parent compounds, that threaten the health of the soil, wildlife, and humans. This research stresses the importance of the U.S. Environmental Protection Agency (EPA) evaluating metabolites, which is currently insufficiently included in regulatory processes. In a literature review in Global Change Biology, the researchers point out multiple areas in which regulations fail to address key criteria, including metabolites, saying: “Pesticide risk assessments currently rely on surrogate species and focus primarily on acute lethality metrics, failing to capture the broader impacts on non-target organisms and thus biodiversity. Under the directives of regulatory agencies worldwide, this traditional approach overlooks the complex interactions between multiple stressors, including climate change, land-use shifts, and pesticide transformation products. Pesticide risk assessments must therefore undergo a paradigm shift to account for these complex interactions, which disproportionately affect insect pollinators, other non-target species, and biodiversity at large.” A metabolite is a breakdown product that forms when a pesticide is used in the environment and mixes with air, water, soil, or living organisms. All metabolites fall under the category of transformation products, which is the broader term for any […]

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17
Nov

Damaging Ecosystem Effects from Pesticide and Fertilizer Mix Support Call for Organic Land Management

(Beyond Pesticides, November 17, 2025) Beyond Pesticides ramped up its campaign to transition parks, playing fields, and schoolyards to organic land management after the release of a study showing synergistic effects of glyphosate (Roundup) and urea fertilizers on earthworms and soil health. The organization’s network is asking Mayors nationwide to lead the transition, pointing to the inadequacy of the current system of regulating pesticides based on risk assessments of individual chemicals or individual chemical families. Chemicals interact, causing increased impacts on human, ecological health, and biodiversity. Moreover, humans, other species, and the biosphere rarely experience exposure to single chemicals or chemical families; exposure to multiple chemicals is the rule, not the exception.   Synergistic effects associated with the use of the weedkiller glyphosate have been implicated in several studies showing magnified adverse impact in soil organisms and in mixture with other chemicals:  The extensive use of glyphosate is linked to effects on nontarget soil organisms, with the risks to soil ecosystems widely studied. (See here, here, here, here, and here.)   One study shows that frequent application in tropical systems of glyphosate “reduced soil macroarthropod richness by 21% and altered community composition.   “A recent global risk assessment of glyphosate further estimated that 67â’93% of soils pose high risks to Collembola [springtails] and 43â’67% pose medium to high risks to […]

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14
Nov

Literature Review Finds Heightened Risks for Thyroid Cancer in Women with Pesticide Exposure

(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 […]

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13
Nov

Prenatal Insecticide Exposure Linked to Negative Birth Outcomes in a Biomonitoring Study

(Beyond Pesticides, November 13, 2025) A study in Environmental Science & Technology shows that maternal exposure to organophosphate (OP) and pyrethroid insecticides adversely affects newborn health. Through amino acid and acylcarnitine metabolomics (the study of small molecules known as metabolites) with over 400 mother-infant pairs, this research analyzes metabolic pathways linking pesticide exposure to negative birth outcomes. “To our knowledge, this study is the first to reveal the effect of OP and pyrethroid insecticide exposure on neonatal metabolic signatures, which may elucidate a key role of metabolites in insecticide exposure and birth outcomes,” the authors state. In collecting maternal urine samples in the first and third trimesters, as well as neonatal blood samples after birth, OP and pyrethroid metabolites and metabolomic biomarkers are assessed. Notably, the authors report: “Results indicated that third-trimester maternal urinary levels of 3- phenoxybenzoic acid (3-PBA) and diethyl dithiophosphate (DEDTP) were negatively associated with birth weight. Specifically, a one-unit increase in their ln-transformed [natural logarithm form] concentrations was associated with a 1.508% decrease in birth weight for 3-PBA and a 1.366% decrease for DEDTP.” Additionally, the analyses show that OP and pyrethroid exposure is associated with “disrupted neonatal amino acids and acylcarnitine profiles, with patterns varying […]

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12
Nov

Community Votes Down Ballot Initiative To Repeal Local Pesticide Restrictions in Maine

(Beyond Pesticides, November 12, 2025) A ballot initiative to repeal a local ordinance in Maine that bans most uses of lawn chemicals was rejected by the voters last week by a 10-point margin. The voters of Falmouth, Maine, 55% to 45%, upheld an updated ordinance that was passed by the town council in February 2025 to protect the community’s health and the coastal environment from petrochemical pesticides and fertilizers, sending a strong message that ecological land management in conformance with organic standards is the responsible path, given pesticide-related health threats, biodiversity decline, and the climate crisis. The ordinance being challenged by the ballot initiative updated a 2020 rule with more stringent criteria and restrictions and the goal of ensuring a holistic approach to land management. Maine has become the bellwether nationwide for communities seeking to eliminate the use of petrochemical pesticides and fertilizers on public and private property, including parks, playing fields, open spaces, and yards. When applied, pesticides move off the target site through drift, volatilization, runoff, and leaching, creating community-wide poisoning and contamination. However, unlike Maine and five other states, most state laws preempt local jurisdictions from restricting pesticides. These states have adopted preemption language at the behest […]

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10
Nov

National Campaign Urges Breweries To Transition to Organic, a Growing Share of the Market

(Beyond Pesticides, November 10, 2025) With a small but growing organic beer market, Beyond Pesticides is urging breweries to align with ecological farming practices and to seek out organic sources for their ingredients. In a June 2025 release, the marketing research firm Data Bridge reports that, “The global organic beer market size was valued at USD 7.24 billion in 2024 and is expected to reach USD 11.90 billion by 2032, at a CAGR [Compound Annual Growth Rate] of 6.4% during the forecast period.” The company attributes the growth to “health-conscious and environmentally-aware consumers” and finds “rising consumer preference for organic and clean-label beverages,” with consumers “actively seeking beer options made with organic hops, malt, and natural ingredients, free from synthetic pesticides or GMOs  [genetically modified organisms].” Harmful pesticides, including glyphosate, 2,4-D, and other toxic herbicides, insecticides, and fungicides, are used in the production of the ingredients of beer. Residues may remain in barley, oats, wheat, and hops used to make beer. Not only do the residues pose a risk to beer drinkers, but growing these crops nonorganically threatens farmworkers, waterways, wildlife, and pollinators.   More than 800 million pounds of pesticides are used each year in U.S. agriculture, with devastating impacts on soil life, pollinators, and ecosystem health. Harm to the soil microbiome and invertebrates like worms and beetles is magnified by synergistic interactions with chemical fertilizers, undermining the foundation of […]

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07
Nov

Prenatal and Early Childhood Exposure to Pesticides Linked to Metabolic Disorders in Males

(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 […]

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06
Nov

Report on Weed Killer Paraquat Identifies True Hazard Costs from Manufacturing to Use

(Beyond Pesticides, November 6, 2025) The report, Designed to Kill: Who Profits from Paraquat, and accompanying interactive storymap, unpacks the supply chain of the infamous herbicide paraquat and underscores the true costs of pesticide products, from manufacturing to use in the fields. This report is part of a larger initiative, the Pesticide Mapping Project—“a collaborative research series that illustrates the health and climate harms of pesticides across their toxic lifecycle: including fossil fuel extraction, manufacturing, international trade, and application on vast areas of U.S. land.” Top Highlights This report highlights, among other notable points, “that every stage of the paraquat supply chain—which spans the globe—emits greenhouse gases and toxic air pollutants.” With SinoChem as the lead producer and player in the paraquat market, the Chinese government-owned pesticide company’s supply chain “includes fossil fuel extraction in Equatorial Guinea and Saudi Arabia, chemical manufacturing in India, Germany, and the United Kingdom, international chemical shipping, and final formulation and distribution in the United States.” Paraquat is not currently manufactured in the U.S., accounting for imports of “between 40 and 156 million pounds of paraquat each year, according to the last eight years of pesticide import records available from the private database.” Despite the […]

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05
Nov

Hop Varieties Emerge for Organic Growers to Expand Organic Beer Market in the UK

(Beyond Pesticides, November 5, 2025) Environmental and public health advocates, farmers, and business leaders are raising a glass to the expansion of organic hop production, which aims to boost the viability and growth of organic-certified beer products in the UK. A 2024 report by UK-based Organic Research Centre, in partnership with farmers, follows three years of field trials to assess the suitability of various hop varieties in organically managed systems. At a time when organic hops production in the UK has dropped significantly due to varieties that are vulnerable to downy mildew and hop powdery mildew, the report offers a blueprint for additional on-farm, applied research in the United States, including from groups such as the Organic Farming Research Foundation’s (OFRF) Farmer-Led Trials Program. The report cites promising results for new hop varieties. The continuous use of pesticides not only contributes to biodiversity collapse, public health deterioration, and the climate crisis, but also to the ability to enjoy a beer without fear of exposure to toxic chemicals, including evidence of glyphosate residues found in popular beer and wine brands. (See Daily News here and here.) Background and Methodology The authors of this report reflect on their years-long field trials and […]

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04
Nov

Synergistic Effects from Glyphosate and Urea Fertilizer Magnify Earthworm Poisoning

(Beyond Pesticides, November 4, 2025) A study of earthworms published in Environmental Science & Technology highlights how chemical mixtures can have both synergistic and species-specific effects, threatening the soil microbiome and overall soil health. In exposing two species, Eisenia fetida and Metaphire guillelmi, to the weed killer glyphosate alone and in combination with urea, a form of synthetic nitrogen fertilizer, the researchers find enhanced toxicity with co-exposure as well as varying health effects between the two species. These results emphasize the need to test a wide variety of nontarget organisms for impacts from environmental contaminants, since species, even within the same genus or family, can exhibit vastly different effects. Glyphosate, as one of the most widely used herbicides worldwide, is highly researched, with a multitude of studies linking the weed killer to effects on humans, wildlife, and soil ecosystems. Since simultaneous application of glyphosate and urea frequently occurs in agriculture, the effects of this mixture on earthworms are crucial for understanding the overall impacts on soil health. In exposing the two species to the individual compounds and as a mixture, the authors report increased glyphosate residues in earthworm gut contents, reduced body weight, aggravated intestinal tissue damage, sharply decreased digestive […]

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31
Oct

Environmental Toxicants, including Pesticides, Linked to Parkinson’s Disease

(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 […]

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30
Oct

Hyperactive Behavior in Preschoolers Linked to Endocrine Disrupting Chemical Exposure

(Beyond Pesticides, October 29, 2025) A study published in Environment International evaluates residues of individual and mixtures of endocrine-disrupting chemicals (EDCs), including pesticides, and finds an association between exposure and hyperactive behavior in children. The researchers evaluated urine samples from over 800 preschoolers, identifying and statistically analyzing concentrations of 22 EDCs, and finding that nine of these chemicals are significantly associated with hyperactivity trajectories and EDC mixtures are positively associated with hyperactive behavior, noting the strongest association in girls.  “The current study indicates the adverse health effects of exposure to mixtures of EDCs among preschoolers, and suggests gender specificity in these effects,” the researchers state. They continue, “This highlights the importance of focusing on multi-pollutant exposure in early childhood.”  Study Importance  “Attention-deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder in children, which has become one of the main factors leading to the burden of disease in children and adolescents worldwide.” The authors continue: “Its core symptoms are high levels of inattention and/or hyperactivity/impulsivity during the preschool period. A meta-analysis showed that the overall prevalence of ADHD in children in China over the past 15 years was as high as 6.2%, and has been increasing over recent years.”  In comparison, according […]

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28
Oct

Organophosphate Pesticide Drift from Agricultural Fields Elevates Risk for Pregnant Farmworkers

(Beyond Pesticides, October 28, 2025) A California-based population study published in BMC Public Health finds that “7.5 [percent] of all pregnant people in California who gave birth in 2021 lived within 1 km [kilometer] of agricultural fields where OP pesticides [organophosphates] had been used during their pregnancy. . .” Despite a 54 percent decrease in overall use of the neurotoxic insecticide chlorpyrifos in the state between 2016 and 2021, after a statewide ban on the organophosphate insecticide in 2016, researchers found that in one California county, “more than 50 [percent] of pregnant people lived within 1 km of OP pesticide use.” Significant disparities were found in terms of elevated exposure to pesticides, “with Hispanic/Latine, young people, and residents of the predominantly fruit and vegetable growing Central Coast region being most likely to live near OP pesticide applications during pregnancy.” The authors suggest that “regulatory changes to limit use or restrict applications in close proximity to residential areas could have a substantial public health benefit on children’s brain development.” These findings add to the existing scientific literature on perinatal and maternal pesticide exposure associated with adverse long-term health effects for children and mothers. They also serve as a reminder to public […]

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27
Oct

Beyond Pesticides Campaigns to Stop Use of Toxic Sewage Sludge (Biosolids) Fertilizer, Transition to Organic

(Beyond Pesticides, October 27, 2025) With the confluence of science and law, the spotlight is on sewage sludge fertilizer and its contaminants, including per- and polyfluoroalkyl substances (PFAS). Sewage sludge (biosolids) is a byproduct of sewage treatment and is used as a source of organic matter for amending soil in nonorganic agriculture and landscaping. In light of a recent settlement in a lawsuit filed by Beyond Pesticides against ScottsMiracle-Gro, ongoing litigation against GreenTechnologies, LLC, and a major study identifying 414 contaminants of emerging concern (CECs), Beyond Pesticides’ network is calling on Governors and local officials to ban the use of biosolids on farms and parks, until there is adequate testing of toxic residues—which does not currently exist.   The lawsuits against producers of sewage sludge fertilizer cite test results showing PFAS residues in the companies’ products and numerous scientific studies on the adverse effects of PFAS to public health, wildlife, and pollinators. (See settlement statement recently reached with ScottsMiracle-Gro.)  A literature review published in Frontiers in Environmental Chemistry identifies CECs in soils, untreated and treated sewage sludge (biosolids), and dust, across 151 peer-reviewed studies released between 2018 and 2023—emphasizing the range of potential exposure pathways across various products, including classes of pesticides like neonicotinoid insecticides. […]

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24
Oct

Childhood, Prenatal Pesticide Exposure Impacts Immune System, According to Study

(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 […]

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23
Oct

Pesticide Contamination of Seaweed Threatens Public Health, Biodiversity, and Ecosystem Functioning

(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 […]

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21
Oct

Dietary Pesticide Exposure Study Stresses Need for More Accurate Assessment

(Beyond Pesticides, October 21, 2025) A study, published in International Journal of Hygiene and Environmental Health, calculates cumulative dietary pesticide exposure and finds a significant positive association between pesticide residues in food and urine when analyzing over 40 produce types. The research uses data for 1,837 individuals from the 2015–2016 National Health and Nutrition Examination Survey (NHANES) and compares them to biomonitoring samples of the participants. According to the researchers, “Here we show that consumption of fruits and vegetables, weighted by pesticide load, is associated with increasing levels of urinary pesticide biomarkers.” They continue, “When excluding potatoes, consumption of fruits and vegetables weighted by pesticide contamination was associated with higher levels of urinary pesticide biomarkers for organophosphate, pyrethroid, and neonicotinoid insecticides.” The NHANES data is derived from a national biomonitoring survey from the U.S. Centers for Disease Control and Prevention (CDC), which collects information about consumption of fruits and vegetables as well as urine samples. Background As the study authors explain: “Hundreds of millions of pounds of synthetic pesticide active ingredients are used every year in the United States, and pesticide exposure can occur through food, drinking water, residential proximity to agricultural spraying, household pesticide use, and occupational use. Pesticide […]

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20
Oct

Escalating Bacterial Resistance Supports Call for Antibiotic Pesticide Ban in Agriculture and Synthetic Turf

(Beyond Pesticides, October 20, 2025) With the release of a study that links the use of nitrogen fertilizer in combination with antibiotic pesticides to escalating bacterial resistance, public health advocates are renewing their call for the U.S. Environmental Protection Agency (EPA) and the U.S. Congress to eliminate antibiotic pesticide use in land management. This action comes on the heels of a World Health Organization (WHO) study finding that antibiotic resistance is evolving even faster than previously thought. WHO finds, “One in six laboratory-confirmed bacterial infections causing common infections in people worldwide in 2023 were resistant to antibiotic treatments. . .. Between 2018 and 2023, antibiotic resistance rose in over 40% of the pathogen-antibiotic combinations monitored, with an average annual increase of 5–15%.”  These findings, linking pesticides, antibiotics, and nitrogen fertilizers to antibiotic resistance, again raise serious concerns about the deadly impacts of conventional (chemical-intensive) agricultural practices on human health. The researchers found that nitrogen is a strong driver of resistance processes. The richness and diversity of phages—viruses that attack bacteria and can transmit antibiotic resistance genes (ARGs)—is highest in the groups exposed to both nitrogen and combined pesticides, and the abundance of ARGs in phages becomes “markedly elevated” in those same exposure conditions.  Bacterial […]

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16
Oct

Combination of Pesticide and Nitrogen Use in Agriculture Escalates the Spread of Antibiotic-Resistant Bacteria

(Beyond Pesticides, October 16, 2025) An important new study links pesticides, antibiotics, and nitrogen fertilizers to the extreme global crisis of antibiotic resistance, raising serious concerns about the adverse impacts of conventional (chemical-intensive) agricultural practices. The research team, from several Chinese universities and laboratories and Queen’s University in Belfast, conducted a three-year study in China using soil bacteria and phages (bacteriophages, or viruses that invade bacteria) from an experimental field, exposing them to a variety of conditions ranging from the control (no exposures) to various combinations of nitrogen fertilizer and two categories of pesticides (the insecticide chlorpyrifos and a blend of the fungicides azoxystrobin and propiconazole). Phages are viruses that eat bacteria. They invade the bacterial cell and, in various ways, cause the death of the bacterium. Some viral genes cause the cells to lyse, or dissolve, releasing their genetic material into the surrounding environment, where other organisms can pick up new genes. In this way, phages are a major pipeline for horizontal gene transfer (movement of genes in bacteria from one bacterial species to another) among microbes. This phenomenon is of increasing concern because the genes circulating in this marketplace include many that enhance antibiotic resistance. The researchers were […]

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15
Oct

Report on Pesticide Contamination of Nation’s Groundwater Shows Widespread Exposure and Health Threats

(Beyond Pesticides, October 15, 2025) The latest Scientific Investigations Report for 2025 from the U.S. Geological Survey (USGS), entitled “National Water Quality Program: Multidecadal Change in Pesticide Concentrations Relative to Human Health Benchmarks in the Nation’s Groundwater,” finds moderate concentrations of five pesticides, with the highest percentages in agricultural wells, and concentrations of the carcinogenic soil fumigant DBCP (1,2-dibromo-3-chloropropane), which also causes infertility, that are greater than the maximum containment level, despite being banned over 45 years ago. These results highlight the persistence of pesticides used in agriculture and the elevated risks of pesticide contamination in agricultural areas. This report monitors concentrations of pesticides in well networks across the U.S. in decadal intervals, with this last one incorporating data ranging from 1993-2023. Additionally, DBCP in one well network in the San Joaquin-Tulare River Basin in California continues to be assessed due to previous levels exceeding the human health benchmark (HHB) established by the U.S. Environmental Protection Agency (EPA). The limitations of the study are disclosed in the text of the report. As the authors state: “Only pesticides with an HHB were included in the multidecadal pesticide change analysis… The total number of pesticides included in this study is less than […]

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07
Oct

Lower Pesticide Exposure Documented for Organic Farmers, Elevated for Others

(Beyond Pesticides, October 7, 2025) Published in Environment International, a study utilizing silicone wristbands provides a snapshot of chemical exposure in over 600 participants across 10 European countries. Using the wristbands as passive and noninvasive samplers, the researchers find that organic farmers’ wristbands contain lower pesticide levels than other groups, offering insight into the benefits of organic and disproportionate risks to farmers using chemical-intensive methods. The results further reveal prevalent environmental pesticide mixtures, in addition to highlighting exposure to current-use pesticides (CUPs) and legacy (banned) pesticides that occurs through multiple exposure routes to workers, residents, and consumers. “Our study offers a comprehensive analysis of non-dietary pesticide exposure patterns among various populations across the EU [European Union], underscoring its widespread prevalence and identifying significant occupational and residential predictors,” the authors explain. As pesticide exposure occurs through both dietary and nondietary routes, such as through dermal (skin) contact and inhalation of contaminated air, there “is a growing need for aggregated [total; combined] exposure estimates across occupationally and nonoccupationally exposed populations.” The study includes testing for 193 pesticides, both legacy pesticides and CUPs, captured in silicone wristbands worn by farmers, residents living close to treated fields (neighbors), and the general population (consumers) in […]

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