Function, Food sources, Advantages, Lacks
Foods may be fortified with vitamin D2 or D3. The majo role is to maintain normal blood levels of calcium and phosphorus. Vitamin D helps the body absorb calcium, which forms and maintains strong bones. It is used alone or together with calcium to improve bone health and decrease fractures.
Three food sources
Wine, egg yolks, beef liver
Calcium and Phosphorus
Lack of vitamin D
bone pain, muscle weakness, increased blood pressure, and depression.