Sun is necessary for life.
Many of us depend on the sun for our only source of vitamin D, which has been thrust into the national spotlight as crucial, preventing osteoporosis and cancer. The major function of vitamin D is to maintain normal blood levels of calcium and phosphorus. Vitamin D aids in the absorption of calcium, helping to maintain strong bones. Recent research suggests D may provide protection from several autoimmune diseases.
This hormone-like vitamin has subtle yet important effects on regulating vital cell growth and on our immune and cardiovascular systems. A strong connection has recently been found, for example, between low blood levels of vitamin D and congestive heart failure