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相关概念视频

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Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
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咖啡和茶的摄入量,痴呆风险和认知功能.

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概括

喝含咖啡因的咖啡和茶与更低的痴呆风险和更好的认知功能有关. 适度饮用,每天大约2-3杯咖啡或1-2杯茶,显示出最显著的益处.

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科学领域:

  • 神经科学是一个神经科学.
  • 流行病学 流行病学
  • 营养科学 营养科学

背景情况:

  • 证据将咖啡和茶饮与认知健康联系在一起是不确定的.
  • 大多数先前的研究都没有区分咖啡因和无咖啡因咖啡的摄入量.
  • 了解这些关联对于公共卫生建议至关重要.

研究的目的:

  • 研究咖啡 (含咖啡因和无咖啡因) 和茶摄入量与痴呆症风险之间的关联.
  • 检查咖啡和茶的消费和认知功能之间的关系,包括主观认知衰退和客观认知表现.

主要方法:

  • 一项前性队列研究,涉及护士健康研究 (NHS) 的女性参与者和卫生专业人员随访研究 (HPFS) 的男性参与者.
  • 饮食中含咖啡因的咖啡,无咖啡因咖啡和茶的摄入量被评估,每隔2至4年使用验证的食物频率调查问卷.
  • 痴呆症发病率通过死亡记录和医生诊断来确定;认知功能通过问卷和神经心理测试来评估.

主要成果:

  • 更高的咖啡因咖啡摄入量与较低的痴呆风险 (HR,0.82;95% CI,0.76-0.89) 和较低的主观认知衰退的患病率显著相关.
  • 更高的茶饮量显示出与认知结果具有类似的保护性关联.
  • 无咖啡因咖啡摄入量与痴呆症风险或认知表现无关.
  • 剂量反应分析表明,咖啡因咖啡和茶与痴呆风险和主观认知衰退的非线性反向关联,在适度消费水平 (每天2-3杯咖啡或1-2杯茶) 达到峰值效益.

结论:

  • 更多的咖啡因咖啡和茶的消费与痴呆症的风险降低和认知功能的改善有关.
  • 适度摄入含咖啡因的咖啡和茶似乎对认知健康最有益.
  • 这些发现表明,含咖啡因的咖啡和茶可能在维持认知功能和预防痴呆症方面发挥作用.