Gerontology is the study of aging from a multidisciplinary perspective.
It focuses on both the normal and problematic aspects of aging. Knowledge about the aging process is gained from two major sources First, gerontology uses relevant theory and research from such basic disciplines as biology, physiology, sociology, psychology, and family studies. Second, gerontology gathers data from applied human service-related professions such as social work, nursing, dietetics, adult education, counseling, and public administration. Gerontology offers excellent career opportunities in a field of growing social and economic significance. One out of every nine persons in America is now age 65 or older.