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LiveScience
LiveScience
Victoria Atkinson

BIZARRE: Are free radicals really that bad for you - You Need To See This

Michael Murphy
An illustration of free radical molecules.

​​Free radicals have a terrible reputation. These reactive and unstable molecules have been associated with cancer, aging, and degenerative diseases such as Alzheimer's.

Yet the body constantly produces free radicals as a key part of life-sustaining processes, such as respiration, cell signaling and defense against disease. So are free radicals really all that bad, or are there any unappreciated benefits?

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