Spend most of your time indoors? You use sun block? Always wearing clothes when you are outdoors? Feel crappy and you are constantly asking yourself: Why can't I think properly? (Although there may be other familial, social, cultural and political reasons for this condition  :) Vitamin D3 and several other vitamins and minerals are essential for your heath. Well, this video might provide some answers for you: Dr. Sten Ekberg: #1 Vitamin D3 DANGER You Absolutely Must Know!...