A vitamin B12 blood test is one way to know if you’re B12 deficient. Some people opt for a urine test instead. Learn when ...

In the case of vitamin B12, furthermore, a deficiency could become a serious problem. Vitamin B12 is “transcendental” for the formation of red blood cells and the maintenance of the central ...

are also high in vitamin B12. Plant-based sources: Vegans and vegetarians who can't source their vitamins from meat can consume seaweed or nutritional yeast. Nutritional yeast is good as a ...