Are You Getting Enough of the Vitamin That Keeps You Young?

Are you exhausted, forgetful and lacking energy? You may suffering from a vitamin B12 deficiency. David Katz of the Yale-Griffin Prevention Research Center and nutritionist Kate Geagan on the importance of vitamin B12; Dr. Oz on natural headache remedies. Also: a segment on colds features Dr. Keri Peterson, a medical contributor to Women's Health magazine.