使用标准分类的BMI或基于膝盖高度的BMI的死亡风险关系 - 超重/低死亡率悖论是否成立?
Nivetha Natarajan Gavriilidou1, Mats Pihlsgård2, Sölve Elmståhl3
1Department of Dental Medicine, Division of Oral Diseases, Karolinska Institutet, Huddinge, Sweden.
Aging clinical and experimental research
|April 8, 2024
概括
经典的BMI可能错误地对老年人肥胖进行分类. 80岁及以上的超重个体,无论BMI计算方法如何,死亡风险较低,这表明超重在这个年龄组具有保护作用.
科学领域:
- 老年学是一门学科.
- 公共卫生 公共卫生
- 流行病学 流行病学
背景情况:
- 经典的身体质量指数 (BMI) 可以错误地对老年人肥胖进行分类,原因是与年龄相关的身高下降.
- 基于膝盖高度的BMI (KH-BMI) 尚未广泛研究老年人群的死亡风险.
研究的目的:
- 评估与60-93岁瑞典成年人经典BMI和KH-BMI相关的特定年龄和性别的死亡风险.
- 用两个不同的BMI估计来研究超重和肥胖分类与死亡率之间的关系.
主要方法:
- 一项为期15年的随访研究,对2,786名60岁及以上的个人进行了随访.
- 测量身高,体重和膝盖高度 (KH),以计算经典的BMI和KH-BMI.
- 利用瑞典死亡登记数据和关于生活方式因素和并发性疾病的问卷.
主要成果:
- 经典的BMI表明,与正常/体重不足的人相比,80岁以上的超重/肥胖男性和超重女性的死亡风险降低.
- KH-BMI分析还显示,80岁以上的超重男性和女性的死亡风险降低.
- 对生活方式因素和并发性疾病的调整没有改变观察到的超重和死亡率之间的保护性关联.
结论:
- 在老年人中,与KH-BMI相比,经典的BMI可能会高估肥胖.
- 在老年人 (80岁以上) 中,超重与死亡率之间存在矛盾的保护性关联,即使调整了身高和其他因素.
- 经典的BMI和KH-BMI都表明,超重与80岁及以上的男性和女性的死亡风险较低有关.
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