Free radicals, antioxidants and phytochemicals

Nowadays, pharmacological industries are providing us with many kinds of food supplements which are supposed to help us fight free radicals, reduce the aging process, prevent risks of cancer and so on. Do not rush to the store right away. Try first to understand how everything works and if it is worth buying all these pills.

Free radicals
How does a free radical works?
Body's defense system
Free radicals and cellular oxidative stress
Antioxidants
Phytochemicals
Antioxidants bioavailability and supplementation