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While B12 can help with energy and metabolism, visible weight loss usually depends on your full program, including diet and activity
In the case of vitamin B12 deficiency, the blood-forming tissues are affected first, but also the nervous system, because vitamin B12 is jointly responsible for the formation of the myelin sheaths in the nervous system
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Absorption: You may not be absorbing enough Vitamin B12
aafp.org/afp/2017/0915/p384
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