Summer sunshine makes most of us feel better, but there may be more to the benefits than just feeling good. A growing body of evidence suggests sunlight itself – with adequate protection, of course – may actually be good for health.
Sunlight comprises two types of solar radiation: UVA, which causes reddening and burning of the skin, and UVB. The latter increases the production of an inactive form or precursor of vitamin D by the skin, which is then activated by the liver and kidneys.
