Sunny lifestyles may halve prostate cancer risk

Are those cold weather states good for you?

people at a high risk of prostate cancer were similar to people at risk for vitamin D deficiency: they often lived in northern latitudes, had darker skin and were old. Vitamin D is produced in the skin as a reaction to ultraviolet light and it subsequently metabolised in the liver and kidneys to form “active” vitamin D.

There's more here.Newscientist