This comprehensive review examines vitamin B12 absorption, physiological roles, deficiency states, and dietary sources, with ...

Vitamin B12 deficiency can be caused by poor diet or malabsorption, leading to fatigue, muscle weakness, and memory problems.

Vitamin B12 is essential for blood formation, nerve and brain function, and energy metabolism. Deficiency is common in vegetarians, older adults, and malabsorption states and causes fatigue, ...

Vitamin B12 plays a vital role in many bodily systems, such as the production of cellular energy and DNA synthesis. A range of factors can influence absorption rates of B12, which can result in the ...

Vitamin B12 is essential for red blood cells, DNA synthesis and your cognitive health. Taking your vitamin B12 supplement at breakfast time may help with efficacy. While side effects are rare, vitamin ...

Dear Dr. Roach: My stepdad is 84 years old and having problems with B12 deficiency. He is taking B12 shots, 1,000 mcg once a week, in addition to taking a 5000 mcg B12 vitamin daily. The numbers come ...

If you’ve ever noticed tiny white spots or discolorations on your skin, you may have brushed it off as a result of age or sun exposure. But this change in your skin may be a sign of a vitamin B12 ...

For most of us, morning starts with a set routine — a series of rituals that stay more or less the same every day. A hot cup ...