Quote Originally Posted by wufwugy View Post
I suspect that low magnesium and zinc are the most problematic nutritional deficiencies we have in our culture
Vitamin D levels are really bad in this country, too. Recently many doctors have increased the recommended vitamin D blood levels from 30 ng/mL to 50 (and some recommend up to 100).

I haven't really heard much about magnesium and zinc deficiencies -- why do you think they are the most problematic?