Recent research shows vitamin D is not only a fat-soluble vitamin, it is also a hormone. Ergosterol is vitamin D for plants, while cholesterol is the building block of vitamin D for humans. When ultraviolet light from the sun hits the skin, it becomes vitamin D.

Vitamin D has many benefits. Vitamin D can regulate blood pressure and help the body metabolize calcium more efficiently. Vitamin D also supports the immune system and promotes proper growth in children. It also benefits the cognitive function of the elderly.

Vitamin D can help prevent Type II diabetes and many types of cancer, including breast cancer, ovarian cancer, colon cancer and bladder cancer. Vitamin D can also lower the risk of stroke and heart attack. Vitamin D can treat osteoporosis and chronic fatigue.