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。

Falling overdose deaths is not unexpected as nationwide numbers have been decreasing since 2023. But the scale of Maryland’s decline is startling, and likely one of the biggest in the country, ...