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B12 and the Brain A vitamin B12 deficiency is typically one of the first things checked in someone who is experiencing unexplained cognitive impairment, Yourman says, since not getting enough of the essential vitamin can cause memory problems and confusion

Regulatory transparency is critical: Lack of clear safety or manufacturing standards can limit future investigation

In explaining such research findings, Pernicious Anemia Relief (PAR) notes that obesity may stem from the habits of individuals who have a B12 deficiency or their co-occurring conditions

They also tell us that they are sick less often and gain muscles and lose weight faster