Vitamin C: Vitamin C daily can help prevent the flu.

Clinical studies have shown that large megadoses of Vitamin C are bit absorbed by the body.

Vitamin C is concentrated in the white blood cells that fight disease. Vitamin C is a free radical scavenger and helps protect the white blood cells.

There is one mystery mineral, literally called "the miracle of life," that’s the subject of a lot of new studies and shows tremendous promise to help prevent and even manage osteoporosis. Plus, it turns out that the general population may be deficient in magnesium.

Vitamin D has long been associated with bone health.

it's true that it plays an important role in regulating calcium deposition and bone formation, but recent research has also shown that Vitamin D plays an important role in cardiovascular health, immune system regulation, cancer prevention, blood sugar regulation, and weight management! 

Fat soluble vitamin D is found naturally in some foods and added to others.   It can be synthesized in the body after exposure to ultraviolet radiation from the sun.  The Mayo Clinic asserts that “as little as 10 minutes of exposure is thought to be enough to prevent deficiencies.”  

The main function of vitamin D is to contribute to normal ranges of phosphorus and calcium in the blood.  It also works with hormones, minerals, and other vitamins to promote bone mineralization.
Foods that contain vitamin D