Vitamin D is necessary for building and maintaining healthy bones. Calcium, the primary component of bone, can only be absorbed by your body when vitamin D is present. Your body produces vitamin D when direct sunlight converts a chemical in your skin into an active form of the vitamin (calciferol).
Vitamin D is not present in many foods, but you can get it from fortified milk, fortified cereal, and fatty fish such as salmon, mackerel and sardines. Many older adults don’t get regular exposure to sunlight and have trouble absorbing vitamin D.
Research has shown that Vitamin D may help prevent certain cancers, improve cognition and memory, reduce the risk of MS, slow bone mineral loss and helps prevent osteoporosis.