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Insurance may cover them for medical issues like B12 deficiency but not for weight loss or energy purposes
The deficiency of vitamin B12 is also known to increase the risk of heart attack and stroke
Medications such as metformin or proton pump inhibitors can significantly hinder B12 absorption
Human trials limited: Clinical data shows modest or inconsistent results. Unclear mechanisms in humans: Translation from animals to people remains uncertain
Protein intake often overlooked provides the literal building material for hair and skin tissue
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