What's antioxidant? Their presence in diets and effects on aging

Define free radicals. Get up smarter. Receive all the morning news in your email.

Atoms form our cells. Electrons encircle atoms. Atoms are stable when outer shell electrons are paired. Losing an electron makes the atom unstable.

To reestablish stability, it will steal one electron from another atom. It generates free radicals. 

Oxidative stress? Lack of antioxidants to neutralize free radicals might cause “oxidative stress”. 

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How dangerous is oxidative stress? Mackenzie says free radicals are essential to various biological activities.

While certain low-level oxidative stress may be beneficial, Mackenzie believes most people conceive of chronic overload.

This happens when antioxidants can't combat or detoxify oxidative stress. That may cause more issues.”

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