Here are the lists:
- Sunlight can be useful for certain kinds of depression, such as Seasonal Affective Disorder.
- Exposure to early morning sun can help properly set the body's biological clock, and help with certain kinds of insomnia. Early morning sunlight can help naturally awaken your body.
- Solar UVB radiation (290-315nm) is needed by the body to make Vitamin D. Vitamin D must be made by the body because dietary sources are inadequate, and supplements must be used carefully.
- Mid-day summer sun is the best source of UVB. 10-15 minutes of exposut without sunscreen is enough to generate the daily requirement of Vitamin D.