Sunny hours have a protective effect on the risk of asthma in schoolchildren; the more time in the sunlight, the less the risk of asthma.
Low sunlight exposure may be the reason for the worldwide epidemic of asthma.
Bowel and Digestive Research:
Low sunlight exposure correlates to high risk of Crohn's disease.
Summer sunlight exposure correlates to a reduced risk of breast cancer among women of any age. Canadian women who spent more than 21 hours per week outdoors had an average risk reduction of 29% compared to those who spent less than 6 hours per week outdoors, and those in the age group 60-74 had a risk reduction of 50%.
G irls with the greatest exposure to sunlight during the ages of 10-19 had a 35% decreased risk of breast cancer as adults .
Women who live in the sunniest areas and have the highest exposure to sunlight have a 65% reduction in breast cancer risk compared to those who have the least sunlight exposure.
Exposure to sunlight and tanning beds correlates to a substantial reduction in the risk of endometrial cancer.
People who receive more than 5 hours of sunlight exposure on the weekends have a reduced risk of melanoma of 33% compared to those who receive less than 4 hours per day.
Active sun exposure habits are correlated to a lower risk of type-2 diabetes in women.
Heart and Vascular Disease Research:
Active sunlight exposure habits correlate to a lower risk of venous clotting in women.
Immune Rystem Research
Sunlight exposure may improve the immune system with mechanisms other than the effects of vitamin D production.
Multiple Sclerosis (MS) Research.
Low sunlight exposure, combined with the effects of a the Epstein Barr virus, may increase the risk of MS.
Ultraviolet radiation (also found in sunlight) suppresses experimental MS independent of vitamin D production.
Women in Spain who actively seek sunlight exposure have a reduced risk of fractures of 91%!
High sunlight exposure correlates to 77% reductiion in the risk of hip fractures in Alzheimer's, stroke and Parkinson's patients.
Sunlight exposure for one year leads to increased vitamin D levels, increased bone mass and a 73% reduction in the risk of hip fractures among Parkinson's patients.
Several studies show that the greater the amount of outdoor activity in natural light, the less the risk of Myopia.