Healthy aging long has been held as a core belief and priority of geriatrics, yet clinical, scholarly, and advocacy efforts have not kept pace with attention to multimorbidity and end-of-life care. With an aging US population and trends toward higher rates of lifestyle diseases, there is imperative for geriatricians to engage in efforts to promote healthy aging. Lifestyle medicine offers an evidence-based approach to healthy aging at any point in the life span. This emerging branch of medical practice has synergistic principles and frameworks with the field of geriatrics, which should further empower geriatricians to engage in promoting healthy aging.