Science News from research organizations Even one drink a day may raise mouth cancer risk Even one daily drink, especially alongside chewing tobacco, may sharply raise the risk of mouth cancer. Date: December 30, 2025 Source: BMJ Group Summary: New research suggests that even light alcohol use may carry serious risks. A large study in India found that drinking just one standard drink a day is linked to a roughly 50% higher risk of mouth cancer, with the greatest danger tied to locally brewed alcohol.