Vitamin B12 is a vital nutrient with numerous health benefits. Learn more about what it does in the body and how to get enough of it.

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 important for the health of your nervous system and your red blood cells. It can be found in many animal products and fortified foods. In the United States, about 6% of people under age ...

From preventing anemia and shoring up energy to keeping you sharp and focused, there are many reasons why vitamin B12 is considered a key nutrient. Note: The U.S. Food and Drug Administration (FDA) ...

Vitamin B12 is a nutrient that your body doesn't make, so you have to get it from animal products, such as meats, dairy, and eggs, or from supplements. B12 is important because it keeps your nerve and ...

As you age, it is important to take care of your body more than you might have in your youth. There are certain necessary vitamins and minerals that with time, become harder for the body to process or ...

Vitamin B12 (cobalamin) is essential for the health of nerve tissue, brain function, and red blood cells. Sources include meat, eggs, and some yeast products. Vitamin B12 is the largest and most ...

Vitamin B12 deficiency occurs when your body lacks enough of the vitamin on a daily basis. This can lead to a lack of healthy red blood cells. Red blood cells carry oxygen to and remove carbon dioxide ...

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Vitamin B12 (cobalamin) is essential for nerve health, red blood cell formation, and DNA synthesis. While it is naturally abundant in animal products, vegetarians can still meet their B12 needs ...

Medically reviewed by Gurdeep S. Sareen, PharmD Key Takeaways Magnesium and vitamin B12 play essential roles in energy production in the body. Limited research supports the use of magnesium and ...