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干果摄入量和降低2型糖尿病的风险:一项两样本的门德尔随机化研究
Jianbin Guan1, Tao Liu1, Kaitan Yang2,3
1Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shannxi, 710054, China.
Nutrition & metabolism
|July 10, 2024
概括
吃干果可能会降低患2型糖尿病 (T2D) 的风险. 这项门德尔的随机化研究表明了保护作用,支持干果作为预防性饮食选择.
科学领域:
- 营养流行病学 营养流行病学
- 遗传流行病学遗传流行病学
背景情况:
- 关于干果摄入量与2型糖尿病 (T2D) 之间的关联存在争议.
- 以前的观察性研究缺乏关于因果关系的确证据.
研究的目的:
- 调查干果消费对T2D发展风险的潜在因果关系.
- 使用两个样本的门德尔随机化方法来评估这种关系.
主要方法:
- 使用全基因组关联研究 (GWAS) 总结统计数据用于孟德尔随机化 (MR) 分析.
- 作为主要分析的反变量加权 (IVW) 方法,补充了MR-Egger和加权中位数方法.
- 灵敏度分析包括Cochrane的Q测试,MR-Egger拦截,离开一个的分析,以及漏斗图片来评估异质性,类型和偏差.
主要成果:
- 门德尔的随机化分析表明,食用干果显著降低了T2D的风险 (OR=0.392,P=0.0001).
- 权重中位数分析的结果证实了IVW的发现.
- 灵敏度分析证实了结果的稳定性,不显示异质性或水平类型的显著影响.
结论:
- 这项研究提供了基因证据,支持干果摄入与2型糖尿病有关的有益作用.
- 合理消费干果可能有助于T2D的初级预防.
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