What: "Vitamins are like hormones and enzymes: active compounds whose functions in the body overlap and interact. The main distinction of vitamins is that the human body can not make them. We have to get them from the food we eat, although we need them only in tiny qualities, they are absolutely essential for life."

Writer: Laurel Robertson et al.

LCC:

Where:

Date: Dec 25 2013 2:41 PM