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Articles related to focusing on healthy aging, prevention, mobility, cognition, nutrition, independence, and caregiving support.

Oct 7, 2025

3 min

What is the oxidative theory of aging?

First proposed by Denham Harman in the 1950s, the oxidative theory of aging, also known as the free radical theory, posits that the gradual accumulation of cellular damage caused by reactive oxygen species (ROS) is a primary driver of the aging process. This damage, which affects critical macromolecules like DNA, proteins, and lipids, contributes to the progressive decline in function observed with advancing age.

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Oct 5, 2025

5 min

Does Oxygen Contribute to Aging? The Paradoxical Role of Reactive Species

Oxygen is fundamental for aerobic life, yet its metabolism produces reactive byproducts that have long been theorized to drive the aging process. The question of **does oxygen contribute to aging** is complex, centering on the delicate balance between oxygen's life-giving energy and the damage caused by reactive oxygen species (ROS). This balance is now understood to be a key factor in how cells manage damage over a lifetime.

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