free-radical theory of aging

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free-rad·i·cal the·o·ry of ag·ing

(frēradi-kăl thēŏr-ē ājing)
The proposition that organisms age because they accumulate free radicals, which are the products of oxidation reactions, over the course of time.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
In the free-radical theory of aging, organisms age because their cells accumulate free radical damage over time.
Harman, "Nutritional Implications of the Free-Radical Theory of Aging," J.
Among the numerous hypotheses developed to understand the aging process, the free-radical theory of aging has become especially prominent (Harman, 1956).
Translated into daily life by Harman's free-radical theory of aging, a rising concentration of free radicals in the human body means that cells are damaged and die, a slew of diseases tends to set in, and the body ages and ultimately dies.