通过双向门德尔随机化探索25-基维生素D与饮食障碍风险的因果关系
Huayang Zhang1, Jiahao Cheng1, Baishu Zheng2
1Department of Urology, Chongqing Western Hospital, Chongqing, China.
Medicine
|July 29, 2025
概括
这项研究表明,较高的维生素D水平可能会降低神经性厌食症的风险. 然而,维生素D与神经性买食症之间的联系需要进一步研究.
科学领域:
- 营养精神病学 营养精神病学
- 遗传流行病学遗传流行病学
- 精神疾病 精神疾病
背景情况:
- 饮食障碍 (ED) 是一种严重的精神疾病,与维生素D的联系不清楚.
- 以前的研究表明,低血清25-基维生素D (25OHD) 和ED之间存在模两可的相关性.
- 25OHD和ED之间的因果关系还没有确定.
研究的目的:
- 调查血清25-氧维生素D (25OHD) 与饮食障碍 (ED) 之间的因果关系.
- 使用双样本孟德尔随机化 (MR) 分析来探索双向因果关系.
- 通过多变量MR (MVMR) 确定25OHD对EDs的直接因果作用.
主要方法:
- 使用双样双向门德尔随机化 (MR) 分析与全基因组关联研究数据.
- 采用逆变量加权 (IVW) 模型作为主要分析,并使用MR-Egger,加权中位数和MR-RAPS作为补充方法.
- 进行了敏感性分析 (Cochran Q,MR-Egger拦截,MR-PRESSO) 和多变量MR (MVMR),以确保稳定性和直接因果关系.
主要成果:
- 前进MR表明,更高的遗传预测维生素D摄入量与神经性厌食症风险降低有关 (ORIVW=0.43,P=0.002).
- 在25OHD和神经性食欲之间没有发现显著的因果关系 (ORIVW=0.84,P=0.780).
- 反向MR分析和MVMR证实了这些发现,没有检测到异质性或水平性.
结论:
- 每天补充维生素D可能有助于预防神经性厌食症.
- 25OHD对神经过敏症的特定作用需要进一步研究.
- 核磁共振分析提供了强有力的证据,证明维生素D对神经性厌食症的潜在保护作用.
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