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 ...

Vitamin B12 is needed for the development and function of nerve tissue and the brain, and for the formation of red blood cells and DNA. It is found in protein foods such as fish, meat, eggs and dairy, ...