This document discusses lifestyle medicine and the formation of a lifestyle medicine interest group at UCSF. It provides background on lifestyle medicine, including its focus on using lifestyle interventions like nutrition, exercise, and stress management to treat and manage disease. It summarizes evidence that lifestyle factors account for the majority of chronic disease risk and that lifestyle changes can significantly reduce risks. The interest group aims to help members develop expertise in lifestyle medicine, practice healthy living themselves, and do outreach and coaching to others. Meetings will include discussions, speakers, and health education on various topics related to lifestyle and chronic disease.