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biology and engineering must both weigh in

Avoid Disease-Cure Claims A supplement should not promise to cure neuropathy, depression, dementia, obesity, or chronic fatigue without a diagnosis

Drug interactions, long-term risks, and safe-use groups have not been established

Semaglutide disrupts multiple steps in this chain

That said, theres no scientific evidence that taking a vitamin B12 supplement, or even eating more foods with vitamin B12, can stop hair loss from happening

In contrast, it would appear that the neurologic effects of cobalamin deficiency are due to metabolic disturbances unrelated to purine synthesis because the neurologic deficits may develop independently of the hematologic abnormalities, and folate supplementation will not prevent or reverse these deficits