by Ann Major

Created on: October 05, 2010   Last Updated: December 21, 2010

The uplifting, energetic qualities of natural sunlight are indisputable; as are numerous health benefits derived from regular exposure to the sun, and the subsequent production of Vitamin D on the skin.

There are actually five forms of Vitamin D:   D1, D2, D3, D4, D5, but the most important for our bodies is D2 ( ergocalciferol ) and D3( cholecalciferol).  Being a fat-soluble vitamin, it needs fat to be absorbed.  While Vitamin D3 can be manufactured in the body,  in the presence of sunlight on skin, D2 can be obtained from fortified foods or vitamin supplementation.  Adequate amounts of D3 can be made through sun exposure for about 10-15 minutes; at least twice to three times a week.  Too much exposure can negate the beneficial effects of natural sunlight for health.

People at risk for a Vitamin D deficiency are those living in Northern climates with limited sun exposure; elderly people who don't get out much; people with darker complexions; and whose melanin interferes with vitamin D production; breast-fed babies, as breast milk does not contain vitamin D.  As well, people who work mostly indoors who have little contact with natural sunlight.

Avoiding the sun can actually be more harmful than good,  as benefits greatly outweigh the risks of exposure.  Vitamin D produced from natural sunlight is essential for good health and proper functioning of organs and cells.  An inadequate supply of vitamin D in the body can create a host of diseases such as various types of cancer, diabetes; bone diseases like rickets, multiple sclerosis, osteoporosis; and skin conditions like psoriasis and eczema; not to mention heart disease, schizophrenia, etc.

Technical Benefits of Sunlight:

Along with water, sun is a necessary component for existence, giving living organisms light, warmth and energy.  Sunlight provides the components for plants to produce chlorophyll ( green life) through the process of photosynthesis.  Humans need sunlight as it directly affects the use of nutrients in the blood, providing a direct conduit through the eyes to the brain, for brain function and health.

Psychological Benefits:

Natural sunlight produces endorphins and serotonin which in turn make us feel better and more relaxed.  Sunlight also increases the production of melatonin, a natural hormone that enhances our ability to sleep, and controls hormones that

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