A professional trained in GerontologyThe study of the aging process and individuals as they grow from midlife through later life including the study of physical, mental and social changes; the investigation of the changes in society resulting from our aging population; the application of this knowledge to policies, programs, and practice. More. Gerontologists have a Masters or doctoral degree, either in GerontologyThe study of the aging process and individuals as they grow from midlife through later life including the study of physical, mental and social changes; the investigation of the changes in society resulting from our aging population; the application of this knowledge to policies, programs, and practice. More, or in another discipline (psychology, biology, social work, etc.) with a focus in gerontologyThe study of the aging process and individuals as they grow from midlife through later life including the study of physical, mental and social changes; the investigation of the changes in society resulting from our aging population; the application of this knowledge to policies, programs, and practice. More.