"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." While vitamin B12 might not be as buzzy as calcium or an immediately recognizable household name like ...

Add Yahoo as a preferred source to see more of our stories on Google. Registered dietitians explain what vitamin B12 is, how much you need, and the potential side effects of taking too much. Vitamins ...

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

Vitamin B12 deficiency can cause anemia, nerve damage, cognitive changes, and mood symptoms. Experts warn it’s often missed, ...

People who sit on the low or high side of normal vitamin B12 levels are still at risk of cognitive impairment, according to a new study. The researchers behind the study say we need to rethink the ...

Vitamin B12 deficiency affects about 15% to 50% of the Indian population. Here are the signs you need to be aware of and what to do when you are deficient.