Experts say vitamin B12 plays a vital role in brain function, nerve health and red blood cell production. A deficiency can ...

One benefit of B12 that’s been particularly noteworthy is its effects on metabolism (the chemical reactions in the body's cells that change food into energy). Although research is still limited, some ...

Vitamin B12 is needed in microscopic amounts, but a shortage can have major effects on health and energy. The vitamin was first linked to a lifesaving liver treatment for pernicious anemia nearly 100 ...