Which vitamin is primarily obtained through sunlight exposure?

The vitamin that is primarily obtained through sunlight exposure is Vitamin D. When the skin is exposed to ultraviolet (UV) rays from the sun, it synthesizes Vitamin D through a chemical reaction that begins with cholesterol in the skin. This process is essential for maintaining healthy bones and teeth, supporting the immune system, and regulating calcium and phosphorus in the body.

While other vitamins can be obtained from food sources, Vitamin D holds a unique status because of its reliance on sunlight for adequate synthesis, especially in regions with less sunlight during certain seasons. This distinguishes it from vitamins such as A, B12, and C, which are primarily obtained through dietary sources rather than being synthesized in the body through sunlight.