Drinking Water Contaminants Tied to Uterine Cancer Risk Megan Brooks July 24, 2026 JAMA Netw Open. 2026;9(7):e2624391. doi:10.1001/jamanetworkopen.2026.24391

https://www.medscape.com/viewarticle/drinking-water-contaminants-tied-uterine-cancer-risk-2026a1000p62?src= Women with relatively greater exposure to common disinfection byproducts in drinking water — even at levels below federal limits — may be at an increased risk for uterine cancer, a large prospective study suggests. Among over 53,000 California women followed for two decades, those exposed to the highest levels of disinfection byproducts called trihalomethanes (THMs) had an 18% higher risk for uterine cancer vs women with the lowest exposure levels. They also had a 23% higher risk for endometrioid tumors, specifically.