What is the role of antioxidants in nutrition, and which two vitamins are given as examples?

• A. Antioxidants provide energy to cells.
• B. Antioxidants increase free radical production.
• C. Antioxidants help neutralize free radicals and reduce oxidative stress; examples: vitamins C and E.
• D. Antioxidants only come from supplements.

Answer: (C)

Antioxidants protect cells by neutralizing free radicals, which are unstable molecules that can damage lipids, proteins, and DNA. By scavenging these reactive species, they help reduce oxidative stress and may lower the risk of aging-related and chronic diseases. The example vitamins—C and E—show how this works: vitamin C is water-soluble and can directly quench reactive species, while vitamin E is fat-soluble and protects cell membranes from lipid damage. Vitamin C can also help regenerate oxidized vitamin E, enhancing the overall antioxidant defense. Antioxidants don’t provide energy to the body, and they don’t increase free radical production. They come from foods like fruits, vegetables, nuts, and oils, not only from supplements.