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A free radical is an atom or molecule with at least one unpaired electron, making it especially reactive to other atoms or groups of atoms. If free radicals react with certain chemicals in the body, they may interfere with the ability of cells to function normally.
At high levels, free radicals may cause cell damage. Some experts believe that cellular damage caused by free radicals may be a factor in some age-related health conditions. As a person gets older, the level of damage from free radicals in the body may increase, leading to cell damage and function problems.
A person may be exposed to free radicals:
Molecules called antioxidants can interact and stabilize free radicals. Many dietary antioxidants are vitamins (such as beta-carotene and vitamins E and C) that occur naturally in fruits and vegetables. Many are also available as supplements.
Current as of: February 28, 2023
Author: Healthwise Staff
Clinical Review Board
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