Although vitamin D is important. Of course overexposure to the point of sunburn and all the health benefits go out the window.
/www.washingtonpost.com/opinions/go-ahead-soak-up-some-sun/2015/07/24/00ea8a84-3189-11e5-97ae-30a30cca95d7_story.html?hpid=z3When we are exposed to sunlight, more than 200 different packets of energy enter our skin. The photons with the lowest wavelengths, ultraviolet B (UVB) radiation... stimulates beta endorphin, which helps create the “runner’s high” and a feeling of well-being.
Ultraviolet A (UVA) radiation initiates the production of nitric oxide. The nitric oxide causes smooth muscle relaxation, leading to a widening of blood vessels and lower blood pressure. It improves circulation in the skin, thereby enhancing wound healing, especially in patients with diabetes. It also causes gastrointestinal smooth muscle relaxation and is involved in learning and memory. UVA radiation causes immune suppression, decreasing inflammatory skin conditions and allergic asthma.
A lack of vitamin D is associated with increased risk for Type 1 and 2 diabetes, multiple sclerosis, rheumatoid arthritis, Crohn’s disease, cardiovascular disease, stroke, depression, Alzheimer’s disease, schizophrenia, colon and breast cancer, influenza and tuberculosis.