Vitamin B12 can contribute to energy, mood, cognitive function and heart health. Read more about the benefits, deficiencies and how much you need.

Ask a Doctor Should I take a vitamin B12 supplement? Here’s what the science says. Older adults and vegans are at higher risk of being deficient in the vitamin. For people with normal blood ...

Low levels of vitamin B12 can cause problems with your nervous system and blood cell production A simple Vitamin B12 blood test can tell you whether your levels are low.

6 best vitamin B12 supplements to take, according to an expert - These are the best B12 supplements on the market, according to a nutritional therapist ...

Vitamin B12 is an essential nutrient for our bodies. Here's how to be sure you're getting enough of it.

Vitamin B12 is important for the health of your red blood cells and nervous system. It's found in many animal products and fortified foods.

Vitamin B12 helps the body convert protein and fat into energy. It helps with cognitive function and menstrual health, but do you need to take a B12 supplement?

The best vitamin B12 foods include clams, liver, and trout. Fortified foods, such as cereals and nutritional yeast, are plant-based alternatives. Learn more here.

Experts explain what signs to look for when it comes to vitamin B12 deficiency, plus how to replenish your stores.

Vitamin B12 is essential for good health but some people struggle with B12 deficiency. We consulted an expert to find the best B12 supplements for every need ...