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Vitamin B12: The Energy and Metabolism Catalyst Vitamin B12 is crucial for red blood cell production, nerve function, and DNA synthesis

Vitamin B12 is an important nutrient that helps your body make red blood cells and DNA, the genetic material in all of your cells

In certain regions of the world, marginal or subclinical vitamin B 12 deficiency may be fairly common in other age groups as well, including children, premenopausal women, and pregnant women, primarily due to low intake of animal-source foods (reviewed in 5)

Many report improved mood and cognitive functions, such as better memory and concentration, after B12 treatment