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Free radicals

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:

  • Through by-products of normal processes that take place in the body (such as the burning of sugars for energy and the release of digestive enzymes to break down food).
  • When the body breaks down certain medicines.
  • Through pollutants, such as heavy metals and cigarette smoke.

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: October 24, 2024

Author: Ignite Healthwise, LLC StaffIgnite Healthwise, LLC Staff

Clinical Review BoardClinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of UseTerms of Use. Learn how we develop our contenthow we develop our content.

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