Sunlight is good for you
at least in moderation
The story of Vitamin D protecting against cancer has been building for some time.
As I grow older I become increasingly impressed by how much moderation in most areas is good. You don't need to eliminate all fat, alcohol or sunlight, but moderation is the key. The same with exercise (advice I don't follow) where a little goes a long way.
Smoking remains a no-no, but maybe soon we'll learn that an occasional cigarette is okay.