{"id":39563,"date":"2025-09-15T00:01:06","date_gmt":"2025-09-15T04:01:06","guid":{"rendered":"https:\/\/beyondpesticides.org\/dailynewsblog\/?p=39563"},"modified":"2025-09-15T00:08:55","modified_gmt":"2025-09-15T04:08:55","slug":"group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects","status":"publish","type":"post","link":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/","title":{"rendered":"Group Urges Regulation of Weed Killer Glyphosate, Found in Food Supply, for Its Synergistic Effects"},"content":{"rendered":"\r\n

(Beyond Pesticides<\/em>, September 15, 2025) With residues of the widely used weed killer glyphosate<\/a> (Roundup\u1d40\u1d39) in the food supply long documented, scientific attention has turned to the synergistic effects of the weedkiller\u2014 a magnified effect greater than the individual chemical effects added together. The authors of an article in World’s Poultry Science Journal<\/a><\/em>\u00a0write, \u201cThe synergistic toxic effects of commercial glyphosate<\/a> formulations and their bioaccumulation in animal tissues are often overlooked in current safety assessments.\u201d Following up on a previous action, Beyond Pesticides is telling Congress and the U.S. Environmental Protection Agency (EPA) that the agency must consider the effects of pesticides in the context in which they are used and promote the organic alternative<\/a>.\u00a0<\/p>\r\n

Glyphosate residues in animal feed, as well as in water and through other exposure routes from food generally and residential areas, pose risks to both animal and human health, as these residues can\u00a0bioaccumulate<\/a>. As previously examined by Beyond Pesticides, the effects of pesticides are not limited to the crops to which they are applied.\u00a0Synergistic effects<\/a>\u00a0of multiple chemical exposures are the rule, rather than the exception.\u00a0\u00a0<\/p>\r\n

With poultry, the herbicide enters the production system through residues in genetically engineered feed. An earlier article in\u00a0Scientific Reports<\/a><\/em>\u00a0concludes that glyphosate’s (GLP) \u201cwidespread application on feed crops leaves residues in the feed,\u201d while residues are \u201cfound to be common in conventional eggs acquired from grocery stores.\u201d In analyzing the biochemical, toxicological, and ecological impacts of glyphosate on poultry, particularly chickens, the authors find a wide body of evidence linking glyphosate and its metabolite (breakdown product)\u00a0aminomethylphosphonic acid (AMPA)<\/a>\u00a0to debilitating hazards that extend beyond mortality. These sublethal effects include disruption of the gut microbiome and gastrointestinal disease; decreased productivity and diminished reproductive health; hepatic and kidney toxicity; growth and developmental impacts, including\u00a0teratogenicity<\/a>\u00a0and\u00a0embryotoxicity<\/a>;\u00a0endocrine disruption<\/a>\u00a0and\u00a0oxidative stress<\/a>; and impaired immune functions.\u00a0<\/p>\r\n

Glyphosate residues in animal feed, as well as in water and through other exposure routes from food generally and residential areas, pose risks to both animal and human health, as these residues can\u00a0bioaccumulate<\/a>. With a high reliance on corn and soybeans in the diets of poultry, genetically modified (GM) crops are a significant source of exposure for these animals. The ubiquitous nature of glyphosate\u202fresidues throughout the environment and within organisms is a result of the widespread application of this toxic chemical in forestry, agriculture, landscaping, and gardening. Over 750 herbicides contain glyphosate as the active ingredient, and it also plays a large role in the production of GM crops, \u201cwith approximately 80% of GM crops bred specifically for GLP tolerance.\u201d<\/p>\r\n

Although the effects of glyphosate alone, as have long been\u00a0documented<\/a>\u00a0in the scientific literature, range from negative impacts on biodiversity and the environment to food safety risks and human health implications, the true impacts can only be seen when looking at the\u00a0whole agroecosystem<\/a>. EPA’s regulatory processes ignore factors that enhance the toxicity of these already harmful chemicals, such as\u00a0synergy<\/a>,\u00a0mixtures<\/a>, and\u00a0“inert” ingredients<\/a>. \u201cCurrent safety evaluations mostly concentrate on glyphosate in isolation, overlooking the\u00a0synergistic toxic effects<\/a>\u00a0of commercial formulations and their capacity for bioaccumulation in adipose tissues,\u201d the review’s authors point out.<\/p>\r\n

Fortunately, adopting a systems approach to analyzing risks also reveals the systemic solution\u2014regenerative organic production and land management\u2014that is both successful and a suitable standard of comparison.\u00a0The only way to truly protect humans, as well as pollinators, insects, birds, and other species, and the biosphere as a whole, is to stop the use of pesticides completely.<\/strong>\u00a0Converting the world’s agricultural systems to organic would have a tremendous positive impact on threatened populations.\u202f<\/p>\r\n

Letter to U.S. Congress<\/strong>
\r\nRecent research on glyphosate demonstrates how people are multiply exposed as the pesticide moves through the food chain. A scientific review in World\u2019s Poultry Science Journal highlights the adverse health effects on avian species from exposure to the widely used weed killer glyphosate throughout poultry production. The herbicide enters poultry production through residues in genetically engineered feed. An earlier article in Scientific Reports concludes that glyphosate\u2019s \u201cwidespread application on feed crops leaves residues in the feed,\u201d while residues are \u201cfound to be common in conventional eggs acquired from grocery stores.\u201d In analyzing the biochemical, toxicological, and ecological impacts of glyphosate on poultry, particularly chickens, the authors find a wide body of evidence linking glyphosate and its metabolite aminomethylphosphonic acid (AMPA) to debilitating hazards that extend beyond mortality. These sublethal effects include disruption of the gut microbiome and gastrointestinal disease; decreased productivity and diminished reproductive health; hepatic and kidney toxicity; growth and developmental impacts, including teratogenicity and embryotoxicity; endocrine disruption and oxidative stress; and impaired immune functions.<\/p>\r\n

Glyphosate residues in animal feed, as well as in water and through other exposures from food generally and residential areas, pose risks to both animal and human health, as these residues can bioaccumulate. The GM corn and soybeans in the diets of poultry are a significant source of exposure for these animals. The ubiquitous nature of glyphosate\u202fresidues throughout the environment and within organisms is a result of the widespread application of this toxic chemical in forestry, agriculture, landscaping, and gardening. Over 750 herbicides contain glyphosate as the active ingredient.<\/p>\r\n

Although the effects of glyphosate alone, as have long been documented in the scientific literature, range from negative impacts on biodiversity and the environment to food safety risks and human health implications, the true impacts can only be seen when looking at the whole environment. EPA\u2019s regulatory processes ignore factors that enhance the toxicity of these already harmful chemicals, such as synergy, mixtures, and \u201cinert\u201d ingredients. \u201cCurrent safety evaluations mostly concentrate on glyphosate in isolation, overlooking the synergistic toxic effects of commercial formulations and their capacity for bioaccumulation in adipose tissues,\u201d the review\u2019s authors point out.<\/p>\r\n

Other studies highlight the need for a broader overhaul of EPA\u2019s current risk assessment process. A November 2023 European study published in Nature challenges \u201cthe current assumption of pesticide regulation\u2014that chemicals that individually pass laboratory tests and semifield trials are considered environmentally benign.\u201d<\/p>\r\n

Since interactions and synergism are the rule, pesticides cannot be evaluated based on single-chemical, single-species tests. They must be evaluated in context\u2014that is, the system of chemical-dependent management must itself be questioned. Fortunately, adopting a systems approach to analyzing risks also reveals the systemic solution\u2014regenerative organic production and land management\u2014that is both successful and a suitable standard of comparison. The only way to truly protect humans, as well as pollinators, insects, birds, and other species, and the biosphere as a whole, is to stop the use of pesticides completely. Converting the world’s agricultural systems to organic would have a tremendous positive impact on threatened populations.\u202f<\/p>\r\n

EPA must consider effects of pesticides in the context in which they are used and with reference to the organic alternative.<\/p>\r\n

Thank you.<\/p>\r\n

Letter to U.S. Environmental Protection Agency
\r\n<\/strong>Recent research on glyphosate demonstrates how people are multiply exposed as the pesticide moves through the food chain. A scientific review in World\u2019s Poultry Science Journal highlights the adverse health effects on avian species from exposure to the widely used weed killer glyphosate throughout poultry production. The herbicide enters poultry production through residues in genetically engineered feed. An earlier article in Scientific Reports concludes that glyphosate\u2019s \u201cwidespread application on feed crops leaves residues in the feed,\u201d while residues are \u201cfound to be common in conventional eggs acquired from grocery stores.\u201d In analyzing the biochemical, toxicological, and ecological impacts of glyphosate on poultry, particularly chickens, the authors find a wide body of evidence linking glyphosate and its metabolite aminomethylphosphonic acid (AMPA) to debilitating hazards that extend beyond mortality. These sublethal effects include disruption of the gut microbiome and gastrointestinal disease; decreased productivity and diminished reproductive health; hepatic and kidney toxicity; growth and developmental impacts, including teratogenicity and embryotoxicity; endocrine disruption and oxidative stress; and impaired immune functions.<\/p>\r\n

Glyphosate residues in animal feed, as well as in water and through other exposures from food generally and residential areas, pose risks to both animal and human health, as these residues can bioaccumulate. The GM corn and soybeans in the diets of poultry are a significant source of exposure for these animals. The ubiquitous nature of glyphosate\u202fresidues throughout the environment and within organisms is a result of the widespread application of this toxic chemical in forestry, agriculture, landscaping, and gardening. Over 750 herbicides contain glyphosate as the active ingredient.<\/p>\r\n

Although the effects of glyphosate alone, as have long been documented in the scientific literature, range from negative impacts on biodiversity and the environment to food safety risks and human health implications, the true impacts can only be seen when looking at the whole environment. EPA\u2019s regulatory processes ignore factors that enhance the toxicity of these already harmful chemicals, such as synergy, mixtures, and \u201cinert\u201d ingredients. \u201cCurrent safety evaluations mostly concentrate on glyphosate in isolation, overlooking the synergistic toxic effects of commercial formulations and their capacity for bioaccumulation in adipose tissues,\u201d the review\u2019s authors point out.<\/p>\r\n

Other studies highlight the need for a broader overhaul of EPA\u2019s current risk assessment process. A November 2023 European study published in Nature challenges \u201cthe current assumption of pesticide regulation\u2014that chemicals that individually pass laboratory tests and semifield trials are considered environmentally benign.\u201d<\/p>\r\n

Since interactions and synergism are the rule, pesticides cannot be evaluated based on single-chemical, single-species tests. They must be evaluated in context\u2014that is, the system of chemical-dependent management must itself be questioned. Fortunately, adopting a systems approach to analyzing risks also reveals the systemic solution\u2014regenerative organic production and land management\u2014that is both successful and a suitable standard of comparison. The only way to truly protect humans, as well as pollinators, insects, birds, and other species, and the biosphere as a whole, is to stop the use of pesticides completely. Converting the world’s agricultural systems to organic would have a tremendous positive impact on threatened populations.\u202f<\/p>\r\n

EPA must consider effects of pesticides in the context in which they are used and with reference to the organic alternative.<\/p>\r\n

Thank you.<\/p>\r\n

 <\/p>\r\n","protected":false},"excerpt":{"rendered":"

(Beyond Pesticides, September 15, 2025) With residues of the widely used weed killer glyphosate (Roundup\u1d40\u1d39) in the food supply long documented, scientific attention has turned to the synergistic effects of the weedkiller\u2014 a magnified effect greater than the individual chemical effects added together. The authors of an article in World’s Poultry Science Journal\u00a0write, \u201cThe synergistic toxic effects of commercial glyphosate formulations and their bioaccumulation in animal tissues are often overlooked in current safety assessments.\u201d Following up on a previous action, Beyond Pesticides is telling Congress and the U.S. Environmental Protection Agency (EPA) that the agency must consider the effects of pesticides in the context in which they are used and promote the organic alternative.\u00a0 Glyphosate residues in animal feed, as well as in water and through other exposure routes from food generally and residential areas, pose risks to both animal and human health, as these residues can\u00a0bioaccumulate. As previously examined by Beyond Pesticides, the effects of pesticides are not limited to the crops to which they are applied.\u00a0Synergistic effects\u00a0of multiple chemical exposures are the rule, rather than the exception.\u00a0\u00a0 With poultry, the herbicide enters the production system through residues in genetically engineered feed. An earlier article in\u00a0Scientific Reports\u00a0concludes that glyphosate’s […]<\/p>\n","protected":false},"author":2,"featured_media":39578,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[249,354,41,425,421,276,1],"tags":[],"class_list":["post-39563","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agriculture","category-environmental-protection-agency-epa","category-glyphosate","category-livestock","category-synergistic-effects","category-take-action","category-uncategorized"],"yoast_head":"\nGroup Urges Regulation of Weed Killer Glyphosate, Found in Food Supply, for Its Synergistic Effects - Beyond Pesticides Daily News Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Group Urges Regulation of Weed Killer Glyphosate, Found in Food Supply, for Its Synergistic Effects - Beyond Pesticides Daily News Blog\" \/>\n<meta property=\"og:description\" content=\"(Beyond Pesticides, September 15, 2025) With residues of the widely used weed killer glyphosate (Roundup\u1d40\u1d39) in the food supply long documented, scientific attention has turned to the synergistic effects of the weedkiller\u2014 a magnified effect greater than the individual chemical effects added together. 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The authors of an article in World’s Poultry Science Journal\u00a0write, \u201cThe synergistic toxic effects of commercial glyphosate formulations and their bioaccumulation in animal tissues are often overlooked in current safety assessments.\u201d Following up on a previous action, Beyond Pesticides is telling Congress and the U.S. Environmental Protection Agency (EPA) that the agency must consider the effects of pesticides in the context in which they are used and promote the organic alternative.\u00a0 Glyphosate residues in animal feed, as well as in water and through other exposure routes from food generally and residential areas, pose risks to both animal and human health, as these residues can\u00a0bioaccumulate. As previously examined by Beyond Pesticides, the effects of pesticides are not limited to the crops to which they are applied.\u00a0Synergistic effects\u00a0of multiple chemical exposures are the rule, rather than the exception.\u00a0\u00a0 With poultry, the herbicide enters the production system through residues in genetically engineered feed. An earlier article in\u00a0Scientific Reports\u00a0concludes that glyphosate’s […]","og_url":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/","og_site_name":"Beyond Pesticides Daily News Blog","article_publisher":"https:\/\/www.facebook.com\/beyondpesticides","article_author":"https:\/\/www.facebook.com\/beyondpesticides\/","article_published_time":"2025-09-15T04:01:06+00:00","article_modified_time":"2025-09-15T04:08:55+00:00","og_image":[{"width":1920,"height":1080,"url":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/09\/chickens.caged_.jpg","type":"image\/jpeg"}],"author":"Beyond Pesticides","twitter_card":"summary_large_image","twitter_creator":"@ByondPesticides","twitter_site":"@ByondPesticides","twitter_misc":{"Written by":"Beyond Pesticides","Est. reading time":"8 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/#article","isPartOf":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/"},"author":{"name":"Beyond Pesticides","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#\/schema\/person\/1b5c0a0981b549cc5b628770073031f4"},"headline":"Group Urges Regulation of Weed Killer Glyphosate, Found in Food Supply, for Its Synergistic Effects","datePublished":"2025-09-15T04:01:06+00:00","dateModified":"2025-09-15T04:08:55+00:00","mainEntityOfPage":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/"},"wordCount":1694,"commentCount":0,"publisher":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/#organization"},"image":{"@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/#primaryimage"},"thumbnailUrl":"https:\/\/beyondpesticides.org\/dailynewsblog\/wp-content\/uploads\/2025\/09\/chickens.caged_.jpg","articleSection":["Agriculture","Environmental Protection Agency (EPA)","Glyphosate","Livestock","synergistic effects","Take Action"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/","url":"https:\/\/beyondpesticides.org\/dailynewsblog\/2025\/09\/group-urges-regulation-of-weed-killer-glyphosate-for-its-synergistic-effects\/","name":"Group Urges Regulation of Weed Killer Glyphosate, Found in Food Supply, for Its Synergistic Effects - 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The founders, who established Beyond Pesticides (originally as National Coalition Against the Misuse of Pesticides) as a nonprofit membership organization in 1981, felt that without the existence of such an organized, national network, local, state and national pesticide policy would become, under chemical industry pressure, increasingly unresponsive to public health and environmental concerns. Beyond Pesticides believes that people must have a voice in decisions that affect them directly. We believe decisions should not be made for us by chemical companies or by decision-makers who either do not have all of the facts or refuse to consider them. Learn more about our work, read A Year in Review\u20142021, our accomplishments are your victories! Beyond Pesticides seeks to protect healthy air, water, land, and food for ourselves and future generations. By forging ties with governments, nonprofits, and people who rely on these natural resources, we reduce the need for unnecessary pesticide use and protect public health and the environment. Beyond Pesticides provides hands-on services to the public and supports local action by: identifying and interpreting hazards; and, designing safe pest management programs. With the information provided by Beyond Pesticides, people may not only be able to make informed choices and adopt practices that protect themselves and their families from unnecessary exposure to pesticides, but they will be able to effect changes on community-wide pest management decisions and policies that govern pesticide use, such as pesticide uses in parks, schools, for community insect control and along roadsides. 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