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Study suggests current serum B12 thresholds may overlook early neurological impairment

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The study followed 231 healthy older adults (median age 71.2), all with B12 levels that would generally be considered normal. It found, however, that those with lower levels of biologically active B12—specifically the form bound to transcobalamin (Holo-TC)—showed signs of neurological decline. These included slower visual processing, reduced cognitive speed and more white matter abnormalities … Read more