A single exposure to a toxic fungicide during pregnancy can increase the risk of disease for 20 subsequent generations https://www.pnas.org/doi/10.1073/pnas.2523071123 Toxic exposure creates disease risk over 20 generations, epigenetic inheritance study suggests https://medicalxpress.com/news/2026-02-toxic-exposure-disease-generations-epigenetic.html Stability of epigenetic transgenerational inheritance of adult-onset disease and parturition abnormalities