Stats indicate that Vit D defficiency is very common. i.e. a typical diet does not provide enough vit D. A "typical healthy diet" can provide even less vit D

Stats indicate that Vit D defficiency is very common. i.e. a typical diet does not provide enough vit D. A "typical healthy diet" can provide even less vit D since much of the vit D consumed it from fortified milk and breakfast cereals. I think a lot of people would benefit from boosters right now. As you say, it does no harm.