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Vitamin B12 is a water-soluble vitamin required for red blood cell production, DNA synthesis, and neurologic function
Those with a history of cancer or with a metabolic or endocrine disorder also need to proceed with care
Nitrous oxide exposure (during surgery or recreational use) can inactivate B12 and cause rapid neurological deterioration in vulnerable individuals
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Your DNA will dictate everything from the color of your hair to the color of your eyes
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