牛肉消费和心血管疾病风险因素:随机对照试验的系统审查和元分析
Lisa M Sanders1, Orsolya M Palacios1, Meredith L Wilcox1
1Midwest Biomedical Research, Addison, IL, United States.
Current developments in nutrition
|December 9, 2024
概括
这项研究发现,每天未经加工的牛肉摄入量不会显著影响心血管疾病风险因素,如血压或大多数血脂. 观察到LDL胆固醇的小幅增加,但并不总是显著的.
科学领域:
- 营养科学 营养科学
- 心血管健康 心血管健康
- 饮食研究 饮食研究
背景情况:
- 观察性研究将红肉与心血管疾病 (CVD) 风险的增加联系起来.
- 随机对照试验 (RCT) 尚未明确证明这种关联.
- 广泛消费的红肉牛肉对心血管疾病风险因素的具体影响需要进一步调查.
研究的目的:
- 系统地审查和分析RCT数据.
- 评估少量或未经加工的牛肉摄入量对成年人心血管疾病风险因素的影响.
主要方法:
- 在PubMed和CENTRAL数据库中进行文献搜索.
- 包括在成人中的RCT,比较含牛肉的饮食与含少或不含牛肉的饮食.
- 提取数据并进行随机效应元分析,计算标准化平均差异 (SMD).
- 进行了敏感性和子组分析.
主要成果:
- 在分析中包括了20个RCT.
- 牛肉摄入量没有显著影响血压或大多数脂蛋白变量 (总胆固醇,高血压,甘油三,非高血压,阿波利波蛋白,VLDL).
- 较高牛肉摄入量观察到LDL胆固醇 (0.11;P=0.03) 的小但显著增加,但在敏感性分析删除了有影响力的研究时,这种效应消失了.
结论:
- 每天摄入未经加工的牛肉不会显著改变大多数血脂,阿波利波蛋白或血压.
- 发现LDL胆固醇的轻微增加,但其意义值得怀疑.
- 需要进一步的研究来探索其他影响牛肉消费与心血管疾病风险之间的关联的因素.
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