What are the main functions of vitamin E in the body?

Vitamin E plays a crucial role in the body primarily as an antioxidant. This means it protects cells from oxidative stress caused by free radicals, which can damage cell membranes and lead to various diseases, including cardiovascular issues and cancer. The antioxidant properties of vitamin E help stabilize cell membranes by preventing the oxidation of lipids, which is essential for maintaining cellular integrity and function.

Furthermore, vitamin E is important for immune function and modulating inflammation, contributing to overall health and well-being. While the body needs energy, vitamin E does not serve as a source of energy like carbohydrates or fats do; its functions are more focused on protection at the cellular level rather than in energy metabolism. This distinction is essential for understanding its role in nutrition and health. The other options presented do not align with the recognized functions of vitamin E, reinforcing the importance of recognizing the specific biological roles of various vitamins.