Vitamin B12 is a nutrient that’s essential for overall health. "Vitamin B12 plays a key role in converting the food that you ...

Medically reviewed by Patricia Mikula, PharmD Vitamin B has been getting more attention as people look for ways to boost ...

All kinds of cells in your body need vitamin B12. That includes red blood cells and glial cells – the kind that protect your nerves. But your body doesn't make this nutrient on its own. You have to ...