A vitamin formed in the skin when it is exposed to sunlight. Vitamin D helps the body use calcium to keep bones strong. It is available in a few foods such as fortified milk and cereal, egg yolks and fatty fish.
A vitamin formed in the skin when it is exposed to sunlight. Vitamin D helps the body use calcium to keep bones strong. It is available in a few foods such as fortified milk and cereal, egg yolks and fatty fish.