Glyphosate is the most widely used herbicide on earth. It is the active ingredient in Roundup and hundreds of equivalent products. IARC classified it as a probable human carcinogen in 2015. Internal Monsanto documents revealed in US litigation showed the company had known about risks for years and had actively worked to suppress and discredit independent science. Bayer, who acquired Monsanto, subsequently paid nearly $11 billion to settle US cancer cases while maintaining the product is safe.
Where it's found
Garden weed killers (Roundup, Weedol and equivalents); agricultural use on wheat, oats, and other crops as a pre-harvest desiccant; non-agricultural land management. Residues found in oats, wheat, breakfast cereals, bread, and beer.
Routes of exposure
Dermal absorption during spraying; inhalation of spray drift; ingestion via food residues (particularly oat and wheat products); ingestion via contaminated drinking water.
Health concerns
IARC Group 2A probable human carcinogen. Endocrine disruptor — disrupts androgen and oestrogen signalling. Gut microbiome disruptor — inhibits the shikimate pathway used by gut bacteria (not present in mammals, but essential to gut microbiota). Found in urine of non-farming European populations. Associated with non-Hodgkin lymphoma in high-exposure studies.
Evidence
IARC Group 2A classification 2015. Internal Monsanto documents (Monsanto Papers) revealed suppression of research — confirmed in US litigation. Bayer $10.9 billion settlement. EU renewed licence controversially for 10 years in 2023 despite IARC classification. Glyphosate detected in urine of >50% of EU general population in some studies. Found in breakfast cereals, oats, and bread in UK FSA monitoring.
Who's most at risk
Agricultural workers (highest exposure), children (particularly via residues in oat-based foods), pregnant women (developmental disruption concerns), people with pre-existing gut microbiome dysbiosis.
Regulatory status
RegulationEU: licence renewed 2023 for 10 years — controversial given IARC classification. Germany and some EU states pushing for restrictions. UK: reviewed independently post-Brexit, currently authorised. US: EPA maintains approved status — contested by independent researchers and litigation outcomes.
How to reduce your exposure
Choose organic oats, oat milk, wheat, and bread products — organic certification prohibits glyphosate use. Wash fruit and vegetables thoroughly. Use weed control alternatives in the garden (boiling water, vinegar solutions, physical removal, targeted flame weeding).
The nutrition connection
Glyphosate's disruption of the shikimate pathway in gut bacteria is directly relevant to Nutriofia's gut microbiome content. The gut bacteria that produce beneficial short-chain fatty acids (butyrate) use this pathway. Reducing glyphosate exposure is one of the most evidence-supported dietary interventions for gut microbiome health. Choosing organic whole grains addresses both glyphosate residue and gut health simultaneously.