Causes of Premature Gray Hair This article was reviewed by Addie Ganik, MD, FAAD. It’s pretty normal to find an occasional ...

A deficiency of vitamin B12 can sneak up more easily than we think. With more than three million people developing it in the United States, it’s considered a common nutritional deficiency. The human ...

Your body needs vitamin B12 for maintaining metabolism, producing DNA and red blood cells, keeping the nervous system healthy, and more (1, 2). Fortunately, most people get enough of this ...

Vitamin B12 is essential for red blood cells, DNA synthesis and your cognitive health. Taking your vitamin B12 supplement at breakfast time may help with efficacy. While side effects are rare, vitamin ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When it comes to giving your body the key nutrients it needs, how often do you think about vitamin B12?

This essential vitamin is generally considered safe, even at high doses. However, most people get enough B12 through diet alone, and unnecessary supplementing may lead to negative side effects.

Vitamin B12 is an essential nutrient for good health. Some of the best sources of vitamin B12 include meat, fish, eggs, fortified foods, and supplements. It may also be advisable to limit or avoid ...

Vitamin B12 (cobalamin) is an important nutrient that strengthens your body's blood cells. It also nourishes your nerve cells and helps keep them healthy. B12 also assists in the formation of DNA.