Antioxidant

Definition

Antioxidants are compounds that inhibit oxidation, a chemical reaction that can produce free radicals leading to cell damage. They play a crucial role in protecting the body from oxidative stress.

5 Must Know Facts For Your Next Test

1. Antioxidants are found in various foods, including fruits, vegetables, nuts, and grains.
2. Common antioxidants include vitamins C and E, beta-carotene, and selenium.
3. Oxidative stress linked with free radicals is associated with chronic diseases such as heart disease and cancer.
4. Antioxidants can be either water-soluble or fat-soluble, affecting where they act within the body.
5. The body's production of natural antioxidants decreases with age, making dietary intake important.

Review Questions

• What role do antioxidants play in preventing cellular damage?
• Name two common antioxidants found in food and their sources.
• How does oxidative stress contribute to chronic diseases?

Related terms

Free Radicals: Unstable molecules that can cause cellular damage through oxidation.

Oxidative Stress: An imbalance between free radicals and antioxidants in the body.

Vitamin C: A water-soluble vitamin that acts as an antioxidant and is essential for the immune system.