Antioxidant food are food rich with substances that repair the damage done by free radicals. Foods rich with antioxidant include lots of produce, beans and whole grains.
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Antioxidant food acts on ROS. ROS chemicals are types of free radical, which is defined as a compound that steals electrons (the tiny particles that orbit atoms) from other compounds. That event causes a destructive chain reaction that can damage cells and DNA

Antioxidant do the opposite of free radicals. They donate electrons. When a free radical like ROS steals an electron, an antioxidant’s role is to donate an electron. They thus halt the destructive chain reaction originally spawned by the free radical.
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Plant foods contain the highest amounts of antioxidants. They include vegetables, fruits, beans, nuts and whole grains. Beef, poultry and seafood are not the greatest sources of antioxidants.

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