VITAMIN D3 FROM GENIUS NUTRITION® It improves mood and increases energy by releasing endorphins. Protects against cardiovascular complications. It plays a vital role in bone health. Strengthens the immune system. It relieves pain caused by fibromyalgia, such as back pain or generalized pain. Vitamin D contributes to various functions of the human body, such as immune defense, calcium and phosphorus metabolism, bone mineralization. Vitamin D is produced in the skin by exposure to sunlight, which is why it is recommended to take vitamin D supplements during the winter. It has been found that vitamin D deficiency can lead to localized fat accumulation, as vitamin D can play a role in fat reduction. An adequate amount of vitamin D in the body also benefits testosterone levels. Various studies have shown that it improves mood and reduces fatigue.