乳制品摄入量及其与老年人认知功能的关联:系统性审查和剂量反应元分析
1School of Nursing, Hebei Medical University, Shijiazhuang, Hebei, China.
Clinical nutrition (Edinburgh, Scotland)
|November 4, 2025
概括
摄入乳制品,特别是发酵产品和适量的乳制品,可能有利于老年人的认知功能. 然而,最佳摄入量水平和区域差异需要进一步研究以获得明确的饮食指导.
科学领域:
- 老年学是一门学科.
- 营养科学 营养科学
- 认知神经科学 认知神经科学
背景情况:
- 关于老年人乳制品消费和认知功能存在不一致的发现.
- 新出现的证据表明存在潜在联系,需要进行全面的系统评估.
- 了解剂量反应和区域差异对于澄清这种关联至关重要.
研究的目的:
- 系统地审查和元分析乳制品摄入量与老年人认知结果之间的关联.
- 探索不同乳制品类型和数量的潜在剂量反应关系.
- 调查乳制品认知关系的区域差异.
主要方法:
- 在多个数据库 (PubMed,Embase,Scopus等) 中进行系统搜索. 在2024年12月之前.
- 包括38项研究 (21个队列,15个横截面,2个RCT) 遵循PRISMA指南.
- 剂量反应和元回归分析以评估摄入水平,类型和异质性.
主要成果:
- 较高的总乳制品摄入量与减少认知衰退和改善全球认知功能相关.
- 发酵乳制品对口头记忆和执行功能有好处.
- 建议的最佳摄入量为每天150g的全乳制品或每天30g的全脂乳制品;牛奶摄入量显示出不同的结果.
结论:
- 适度的乳制品消费,特别是发酵类型,可能会支持老年人的认知健康.
- 关联因乳制品类型和地理区域而异.
- 进一步进行高质量的研究对于完善认知健康的饮食建议至关重要.
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