Medically reviewed by Amelia MacIntyre, DO Vitamin B12 helps your body make red blood cells, maintain nerve health, may boost energy levels, and support a good metabolism (turning food into energy).

Your body can't produce vitamin B12 on its own, so getting it from your diet is important. If you're just starting to study it, we'll help you understand it further.

Plant-based foods don’t provide B12 but fortified breakfast cereals or nutritional yeast are good sources for vegetarians and vegans. B12 is available as either oral tablets or prescription vitamin ...

Vitamin B12 foods are mostly animal-based like salmon or cheese, but it can also be found in fortified plant-based foods like ...

When it comes to essential nutrients, the B vitamins get a lot of attention—and rightfully so. The water-soluble vitamins help your body make energy from the food you eat and play an important role in ...

Feeling drained and low on focus? The truth is, most vitamins for energy only help if you’re deficient in something essential ...

Q: I'm tired often and heard that vitamin B12 can help with fatigue and boost energy levels. Should I be taking a supplement? A: There's no proven benefit to taking vitamin B12 for fatigue unless you ...

DEAR DR. ROACH: My stepdad is 84 years old and having problems with B12 deficiency. He is taking B12 shots, 1,000 mcg once a week, in addition to taking a 5000 mcg B12 vitamin daily. The numbers come ...

Vitamin B12 deficiency can cause a number of strange sensations, like numbness, tingling, and more. “It felt like electricity ...

What happens to your weight when you take vitamin B12? Your body may have a surprising reaction when you fix any B12 ...