If you're dealing with a B12 deficiency or simply struggling to get enough of the essential vitamin in your diet, B12 supplements can help. These are the benefits and potential risks to know.

Q I was surprised when a blood test at my annual checkup found I’m low in B vitamins, especially B12. My doctor gave me a shot, and the fatigue that I had been feeling went away. Why is B12 so ...

B vitamins. These powerhouse ... of B6 for men aged 14 to 50 is 1.3 milligrams (mg). For those 51 and older, it is 1.7 mg.