Does caffeine reduce the risk of skin cancer? Research suggests that consuming caffeine in coffee and other beverages may lower the risk of skin cancer. Paul Nghiem, UW associate professor of medicine in the Division of Dermatology and adjunct professor of pathology, has found that when caffeine is added after DNA is damaged by sunlight, pre-cancerous skin cells die at about double the rate than when no caffeine was present. The next big question for Dr. Nghiem: should caffeine be in sunscreens? The lecture takes place at 6:30 p.m., Wednesday Oct. 7, Microsoft Auditorium, Central Library, 1000 Fourth Ave. For more information, visit www.spl.org.