What impact does adequate selenium intake have on health?

Adequate selenium intake plays a significant role in enhancing antioxidant capabilities within the body. Selenium is a trace mineral that is a crucial component of several antioxidant enzymes, such as glutathione peroxidase. These enzymes help mitigate oxidative stress by neutralizing free radicals, which can otherwise lead to cellular damage and contribute to various chronic diseases, including cardiovascular disease and cancer. By enhancing the body's antioxidant capacity, selenium helps protect cells from oxidative damage, supporting overall health and well-being.

The other options, while related to health, do not directly reflect the primary function of selenium as an antioxidant. For example, while some nutrients may influence muscle mass, skin elasticity, or hair growth, selenium's most recognized and researched impact is its role in antioxidant defense.