What role does vitamin B12 play?

Without vitamin B12 the body has difficulty creating the red blood cells which carry oxygen and allow the brain and the nervous system to function properly. A deficiency in vitamin B12 can result in symptoms of chronic fatigue and lethargy. Evidence abounds of people combating the adverse of effects of such deficiencies with vitamin B12 supplementation. (Vitamin B12’s application in respect of chronic fatigue)

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