According to Dr. Richard Weller, a dermatologist in Edinburgh, sunlight could be good for your heart. In addition to supplying Vitamin D, sunlight causes the release of nitrous oxide on the skin, which benefits blood pressure and the cardiovascular system. You can watch Dr. Weller at http://www.ted.com/talks/richard_weller_could_the_sun_be_good_for_your_heart . And an article in the Scottish Express http://www.express.co.uk/news/uk/526739/Sunlight-key-fighting-diabetes-Scots-scientists-reveal , that references Dr. Weller, suggests that experiments also show the benefits of moderate exposure to sun light as fighting obesity and Type 2 Diabetes. But skin cancer can kill, so stay in the sun in moderation.