Vitamin B12 deficiency develops slowly but can cause lasting damage if untreated. Warning signs include fatigue, tingling hands or feet, a red tongue and memory issues. Boost your intake with vitamin ...

Vitamin B12 is an essential nutrient that's often overlooked. Also known as cobalamin, vitamin B12 helps your body produce vital red blood cells and boost your energy levels, among other things.

Vitamin B12 is an essential nutrient that must be obtained through diet or a supplement. Having too little B12 can cause fatigue, anemia, and neurological problems. Vitamin deficiencies may sometimes ...

This essential vitamin is generally considered safe, even at high doses. However, most people get enough B12 through diet alone, and unnecessary supplementing may lead to negative side effects.