What happens if your body has too much vitamin B12? Read on to find out the dangerous side effects of having excessive levels ...

If you're considering a vitamin B12 supplement because of certain dietary restrictions, medical conditions or your age, this ...

Vitamin B12 is typically well-tolerated, but in very rare cases, there are serious side effects to be aware of. Learn more ...

Meeting the minimum requirement for vitamin B12, needed to make DNA, red blood cells and nerve tissue, may not actually be enough – particularly if you are older. It may even put you at risk for ...

A new study suggests that older adults with lower levels of vitamin B12—even within the normal range—may experience cognitive decline and brain damage. Researchers found that these people had slower ...