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It participates in the conversion of homocysteine to methionine and the metabolism of methylmalonic acid, both crucial for energy production at the cellular level
This essential vitamin plays a critical role in energy production, red blood cell formation, and neurological function
While the NIH does not specify a tolerable upper intake level for vitamin B12, a study published in the JAMA Network Open found that high intakes of vitamin B12, such as from daily supplementation of 25 micrograms or higher, increased the risk of bone fracture [3] [4]
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