Common Cold
10 minute exposure to UV light 1- 3 times a week reduces the frequency of colds up to 40%. Source: Kime, Dr. Z. Penryn, CA World Health Publications, 1980.

Obesity
Sunlight stimulates the thyroid gland, which boosts your metabolism. Source: Hollwich, Fritz, The Influence of Osclar Light Perception on Metabolism in Man and Animal.

Sex Drive
When the chest and back are exposed to sunlight the male sex hormones may increase by up to 120%. Source: Kime, Dr. Z. Penryn, CA World Health Publications, 1980.

Psoriasis (a chronic condition with no known cure)
80% of Psoriasis sufferers show improvement with UV exposure. Source: "PUVA Myth" Pharmacy News, Vol. 6:1, 1994.

Cancer Prevention
If has been hypothesized that sunlight exposure may prevent certain types of cancer: colon and breast cancer rates are three times higher in northern states like New Hampshire and Vermont compared to sunny states like New Mexico and Arizona. Source: Garland, Dr. C et al. "Calcium and Colon Cancer" Clinical Nutrition, July/August 161-6, 1986.

Seasonal Affective Disorder
A 1993 study shows that 70% of patients with SAD show improvements after light treatment, the only known treatment for the "winter blues." Source: Wirz-Justice, Arch. General, Psychiatry 50:929, 1993.