Volume 20, Issue 4 p. 145-147

The Biologic Clock: The Mitochondria?

DENHAM HARMAN M.D., Ph.D.

DENHAM HARMAN M.D., Ph.D.

Departments of Biochemistry and Medicine, University of Nebraska College of Medicine, Omaha, Nebraska

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First published: April 1972
Citations: 1,497

Professor of Biochemistry and Professor of Medicine.

University of Nebraska College of Medicine, 42nd and Dewey Ave., Omaha, Nebraska 68105.

ABSTRACT:

The author suggests that the maximal life span of a given mammalian species is largely an expression of genetic control over the rate of oxygen utilization. The latter determines the rate of accumulation of mitochondrial damage produced by free radical reactions, the rate increasing with the rate of oxygen consumption, which ultimately causes death.