研究吸烟行为与全球大脑体积之间的关系
Yoonhoo Chang1, Vera Thornton1, Ariya Chaloemtoem1
1Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Biological psychiatry global open science
|December 22, 2023
概括
吸烟显著减少大脑体积,更重的吸烟导致更大的体积损失. 这项研究证实,吸烟导致大脑体积减少,而不是相反.
科学领域:
- 神经科学是一个神经科学.
- 流行病学 流行病学
- 遗传学 是一个遗传学.
背景情况:
- 以前的研究表明,大脑体积和吸烟之间存在负面联系.
- 关于吸烟是否会导致大脑体积减少,或者如果较低的大脑体积是吸烟的危险因素,存在争论.
研究的目的:
- 为了研究吸烟与大脑体积之间的因果关系.
- 使用流行病学和遗传学方法确定吸烟与大脑体积之间的关联的方向性.
主要方法:
- 利用了来自32,094名英国欧洲血统生物库参与者的数据.
- 采用布拉德福德希尔的标准和调解分析来评估因果关系.
- 研究了吸烟史,吸烟遗传风险得分和大脑体积之间的关联.
主要成果:
- 每日吸烟与大脑体积的减少有很强的相关性,显示了与包装年之间的剂量反应关系.
- 吸烟开始的多基因风险评分与吸烟行为有关,但仅与大脑体积有关.
- 调解分析证实,吸烟行为调解了遗传风险对大脑体积的影响.
结论:
- 每日吸烟与大脑总体体积的减少有因果关系.
- 这些发现支持吸烟导致大脑体积减少.
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