Doctor Behind ‘Free Radical’ Aging Theory Dies


Obit HarmanDr. Denham Harman, a renowned scientist who developed the most widely accepted theory on aging that’s now used to study cancer, Alzheimer’s disease and other illnesses, has died in Nebraska at age 98, the AP reports.

Harman developed the “Free Radical Theory of Aging” in 1954, though it took years for additional research to prove its importance. In simple terms, the theory holds that one of the byproducts of oxygen utilization is adverse chemical reactions in cells. The result is aging and, ultimately, death.

The medical community initially scoffed at Harman’s theory. But by the 1980s, free radicals had become part of research into cancer, cardiovascular disease and strokes. Free radicals have since been linked to Alzheimer’s disease. Read more.

{ Newscenter}