试验名为IDEAL（经皮艾斯能治疗治疗阿尔茨海默氏病调查）临床试验，纳入近1200例轻至中度阿尔茨海默病患者。
The trial was called the international IDEAL (Investigation of Transdermal Exelon in ALzheimer's disease) clinical trial and involved nearly 1,200 patients with mild to moderate Alzheimer's disease.
研究人员发现，血中维生素B12水平的每皮摩尔增加与老年人中阿尔茨海默氏病风险2%的下降相关联。
Researchers found that each picomolar increase in blood vitamin B12 level was associated with a 2% reduction in the risk of Alzheimer's disease among the elderly.
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