Vitamin B12 is an essential nutrient that helps the body create DNA, nourishes the brain and nervous system, and assists with the formation of healthy red blood cells. The nutrient occurs naturally in ...

DEAR DR. ROACH: I am 73, and I was worried about dementia. Turns out, I am “normal.” However, the neurologist told me to take 2,000 mcg of B12 daily. My multivitamin has 100 mcg, which is 4,167% of ...