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Cellular errors are the result of deterioration over time because of continued use, in the course of aging, the individual slowly withdraws from former roles/activities, and aging is a programmed decline in the functioning of the nervous, endocrine, and immune systems. The cells lose their ability to reproduce. There are specific tasks associated with aging, including adjusting to the losses of aging (health, income, death of spouse, and age peers), adapting to change and new roles and accepting life’s experiences.
What are biological, error, sociological, and developmental theories of aging?