free-radical theory of aging

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United States Electoral College votes by state

How Many Electoral College Votes Does Each U.S. State Have?

Jackson (Wyoming, United States). Jackson Lake (also called Jackson Hole), southern end of the Teton Range (the Grand Tetons), Grand Teton National Park, Wyoming, USA

7 Wonders of America

United States electoral college map showing number of electoral votes by state.

How Does the Electoral College Work?

Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.

12 Greek Gods and Goddesses

Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.

5 Remarkably Close U.S. Presidential Elections

Vincent Van Gogh, Self Portrait. Oil on canvas, 1887.

Rediscovered Artists: 6 Big Names That Time Almost Forgot

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

free-radical theory of aging

biology

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aging

In aging: Oxidative damage theory
…has given rise to the free radical theory of aging, which is concerned in particular with molecules known as reactive oxygen species (ROS). This theory was first proposed in the 1950s by American gerontologist Denham Harman and was supported in part by evidence that antioxidant proteins, which neutralize free radicals,…
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human nutrition

In human nutrition: Adulthood
The so-called free-radical theory of aging—the notion that aging is accelerated by highly reactive substances that damage cellular components, and that intake of various antioxidants can repair free-radical damage and thereby slow aging—has generated much interest and is a promising area of research, but it has not…
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