Which vitamin acts primarily as an antioxidant in the body?

Vitamin E acts primarily as an antioxidant in the body, which is essential for protecting cells from oxidative stress caused by free radicals. This vitamin is a fat-soluble compound that is found in various foods, particularly in nuts, seeds, and vegetable oils. Antioxidants like Vitamin E play a crucial role in maintaining the integrity of cell membranes and preventing cellular damage, which can contribute to chronic diseases and aging.

Additionally, Vitamin E has important roles in supporting immune function and skin health. Its antioxidant properties help to neutralize free radicals, thereby reducing inflammation and the risk of certain chronic conditions. This function distinguishes Vitamin E from the other vitamins listed, which serve different essential roles in the body.

For instance, Vitamin A is important for vision and immune function, Vitamin B6 is involved in amino acid metabolism and neurotransmitter synthesis, and Vitamin K is crucial for blood clotting and bone health. These vitamins do not primarily function as antioxidants in the same way Vitamin E does.