# Agent Orange affects rats’ great-grandchildren, study finds 2026-08-10T15:57:44+00:00 | World & Diplomacy | Indian Opinion Desk Corroboration: 1 independent outlet A Washington State University study published in 2012 found that rats exposed to dioxin, the toxic contaminant in Agent Orange, passed on health defects to their great-grandchildren, even though those later generations never encountered the chemical. Pregnant rats received a tiny dose of TCDD, 0.1% of the lethal amount. Their direct offspring showed prostate and ovarian problems. But third-generation pups, exposed only through their ancestors' germline, developed kidney disease, polycystic ovaries and altered puberty. The findings suggest epigenetic changes, not genetic mutations, may transmit damage. The Times of India reports that the US sprayed nearly 19 million gallons of Agent Orange over South Vietnam, Laos and Cambodia between 1961 and 1971. Dioxin remains in the environment and enters the food chain. The study raises questions about whether human descendants of exposed Vietnamese civilians face similar long-term health burdens. ## Coverage - timesofindia.indiatimes.com Tags: Agent Orange, dioxin, epigenetics, multigenerational health, scientific study, Vietnam War Canonical: https://indianopinion.org/agent-orange-affects-rats-great-grandchildren-study-finds/ License: Summary and commentary (c) Indian Opinion, reusable with attribution. Facts belong to the linked sources. Cite: https://indianopinion.org/agent-orange-affects-rats-great-grandchildren-study-finds/#story-in-brief Review state: restored archive article, accurate at time of publication, not offered to search indexes.