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Reversal of cancer anorexia by blockade of central melanocortin receptors in rats

B12 supplementation in people who are not deficient does not produce meaningful additional energy benefits beyond what normal B12 levels already provide

B12 is known to play a key role in numerous functions in the body, including (but not limited to): DNA and red blood cell formation Maintaining a healthy metabolism and digestion Synthesis of neurotransmitters and hormones Energy production Nerve cell health Gene and enzyme regulation Athletic prep or recovery Vitamin B12 shots may also help reduce the risk of the following conditions: heart disease, neurological function, stroke, cognitive functions such as thinking and memory, problems with fertility, and neural tube defects in children born to parents with a vitamin B12 deficiency

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