我们都知道维生素B12对身体的重要性，它帮助维持神经系统的健康和红血球的形成。然而，一项最新的研究颠覆了我们对维生素B12的传统认识，即使血液中的维生素B12水平在“正常”范围内，也可能隐藏着影响神经系统健康的隐患。

*仅供医学专业人士阅读参考维生素B12是一种必需维生素，通常通过肠道吸收，摄入不足或消化道损伤会引起维生素B12缺乏，导致血液和神经系统症状。亚临床维生素B12缺乏症（SCCD）常见于老年人，与认知能力下降和脑白质增加有关。当前定义的维生素B12正常 ...

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Researchers found that low but normal-range B12 levels in older adults are linked to slower cognitive processing and white ...

Researchers identify associations between B12 levels currently accepted as normal and markers of neurological injury or ...

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