Overview

Vitamin B12 is a coenzyme essential for the normal function of all cells, including the formation of healthy blood cells. Studies on older people have found that lower levels of Vitamin B12 can impair certain cognitive skills. Vitamin B12 is important for growth and plays a vital role in the metabolism of protein, fat and carbohydrates. It is the only B Vitamin that the body stores in large amounts, primarily in the liver. Vitamin B12 deficiency can lead to pernicious anemia. Animal foods are the primary dietary source of Vitamin B12; therefore it is important for vegetarians and vegans to supplement with this vitamin.