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The two theories; non-adaptive, and adaptive, are used to explain the evolution of senescence, which is the decline in reproduction with age. [8] The non-adaptive theory assumes that the evolutionary deterioration of human age occurs as a result of accumulation of deleterious mutations in the germline. [8]
He is credited with developing theories about lifespan and wisdom, the selective optimization with compensation theory, and theories about successful aging and developing. [2] He received his doctorate from the University of Saarbrücken (Saarland, Germany) in 1967. After, Baltes spent 12 years at several American institutions as a professor of ...
Biogerontology should not be confused with geriatrics, which is a field of medicine that studies the treatment of existing disease in aging people, rather than the treatment of aging itself. There are numerous theories of aging, and no one theory has been entirely accepted.
Adult development encompasses the changes that occur in biological and psychological domains of human life from the end of adolescence until the end of one's life. Changes occur at the cellular level and are partially explained by biological theories of adult development and aging. [1]
Despite Charles Darwin's completion of his theory of biological evolution in the 19th century, the modern logical framework for evolutionary theories of aging wouldn't emerge until almost a century later. Though August Weismann did propose his theory of programmed death, it was met with criticism and never gained mainstream attention. [3]
In 1968 it took the form and became known as the neuroendocrine theory of aging. [38] [39] [40] 1956 Denham Harman proposed the free-radical theory of aging and demonstrated that free radical reactions contribute to the degradation of biological systems. [41] The theory is based on the ideas of Rebeca Gerschman and her colleagues put forward in ...
He is the author of Time of Our Lives: The Science of Human Aging (1999), The End of Age: Why Everything About Aging Is Changing (2001), and co-author of Chance, Development, and Aging (2000, together with Caleb E. Finch). In 2001 he gave the annual Reith Lectures. [1]
Robert James Havighurst (Hurlock) (June 5, 1900 – January 31, 1991) was a chemist and physicist, educator, and expert on human development and aging. Havighurst worked and published well into his 80s. He died of Alzheimer's disease in January 1991 in Richmond, Indiana at the age of 90. [1]