Cure8 research brief
This review summarizes human evidence that pesticides in the diet could affect the gut microbiome and may be linked to gastrointestinal outcomes including IBD; strongest consistent signals were for organochlorine exposure and IBD, but overall evidence is limited and uneven across pesticide classes.
Researchers studying the microbiome, environmental exposures, or IBD; clinicians treating patients with IBD and monitoring environmental risk factors; and patients and caregivers interested in diet, chemical exposures, and gut health.
The authors performed a PRISMA-ScR scoping review of human studies (PubMed through April 2026 plus citation tracing) and synthesized results in a pesticide-class × outcome matrix. Twenty-eight papers were retained and 20 human studies entered the detailed synthesis.
Evidence coverage was incomplete (20 of 60 matrix cells populated), and risk-of-bias across cohorts was commonly moderate, with several studies showing elevated bias. The most consistent within-scope finding reported was higher IBD risk associated with organochlorine exposure across three cohorts.
Other pesticide–outcome cells (for example glyphosate × IBD and neonicotinoids × GI outcomes) had no human studies identified, and the authors highlight biomarker-anchored prospective cohorts as a priority to fill these gaps.
Findings are drawn from a scoping review of human studies with moderate to elevated risk of bias in several cohorts. The abstract-level synthesis highlights gaps (many pesticide×outcome cells empty) and recommends prospective biomarker-based cohorts to improve causal inference.
Review the original publication for the complete reporting, methods, and context.
This Cure8 brief is based on source text from the linked article. Cure8 is informational only and is not a substitute for professional medical advice, diagnosis, or treatment.
Environmental pollutants are increasingly linked to Crohn's disease risk, especially when exposures occur in early life. Understanding these links may help explain rising IBD rates and guide future prevention research.
Environmental exposures from agricultural chemicals may affect the gut microbiome and intestinal inflammation, which could be one factor influencing IBD risk or flares. Understanding these links could point to preventive...
Researchers and clinicians are exploring how fucose metabolism affects gut barrier function, immunity, and microbiota — processes central to IBD and colorectal cancer. If validated, fucosylation biomarkers or treatments...
