Which vitamin is known for its anti-cancer properties and is primarily obtained from the Sun?

Vitamin D is recognized for its potential anti-cancer properties and is primarily synthesized by the body when the skin is exposed to sunlight. This vitamin plays a critical role in various bodily functions, including calcium homeostasis and immune response, and it has garnered attention for its role in cancer prevention, particularly through its influence on cell growth and differentiation.

Research suggests that adequate levels of vitamin D may help inhibit the progression of certain cancers, such as colorectal, breast, and prostate cancers. This is believed to be related to vitamin D's ability to regulate gene expression and promote cellular health, which can contribute to the prevention of malignant transformations.

While the other vitamins listed also have important health benefits, they are not primarily known for being derived from sunlight or widely studied for their direct role in cancer prevention. Vitamin C is well-known for its antioxidant properties, Vitamin E is recognized for supporting heart health and protecting cells from oxidative damage, and Vitamin A is vital for vision and immune function. However, none of them are primarily acquired through sun exposure like vitamin D, nor do they have the same specific association with anti-cancer activity as vitamin D does.