Vitamin D – Not All You Think It Is

Vitamin D is both a hormone and a vitamin. It was identified in the 1920s after a long search for the cause and cure of rickets, which had been a significant health problem since the industrialization of northern Europe.  Vitamin D is obtained from food sources...

At one time, Vitamin D-2 was added to milk. Vitamin D-2 is manufactured by exposing bacteria and algae to ultra-violet light. D-2 imparted a bitter taste to dairy products, and so was replaced by vitamin D-3. Basically D-3 always is derived from an animal. The...