Medically reviewed by Marla Anderson, MD Free radicals are highly reactive and unstable molecules that are made by the body naturally as a byproduct of normal metabolism. Free radicals can also be ...

Discover how free radicals damage your cells and cause heart disease, cancer, and aging. Learn which antioxidants protect your health.

The body’s production of free radicals, Smythers and her coauthors found, is instead part of the process of helping the tardigrade protect itself by curling into a hard-shelled ball resistant to ...

Oxidative stress is an imbalance of free radicals and antioxidants that can negatively affect your cells and tissues. Experts explain how to reduce it.

Research shows that blackberries are especially high in antioxidants that can help block the release of pro-inflammatory ...

Considered the most powerful antioxidant because “it's composed of three amino acids: glutamine, cysteine, and glycine,” ...

Antioxidants in your body destroy free radicals before they can damage and age your cells. But if free radicals outnumber your antioxidants, it results in oxidative stress.

The body’s production of free radicals, Smythers and her coauthors found, is instead part of the process of helping the tardigrade protect itself by curling into a hard-shelled ball resistant to ...

The body’s production of free radicals, Smythers and her coauthors found, is instead part of the process of helping the tardigrade protect itself by curling into a hard-shelled ball resistant to ...