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坚持饮茶降低心脑血管病风险
信息来源: 盐城三院 | 2020年04月07日 | 访问次数:377次
  

坚持饮茶降低心脑血管病风险

可能与茶中富含的茶多酚有关                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

 

近日,中国医学科学院阜外医院顾东风院士团队在《欧洲预防心脏病学杂志》上发表的研究论文显示,经常饮茶能够降低心脑血管事件及全因死亡发生风险,尤其对于长期坚持饮茶习惯的人群、男性饮茶者、饮用绿茶者,健康获益更为显著。
  研究团队对研究对象健康结局追踪最长达17年,结果发现,与无饮茶习惯者相比,经常饮茶者心脑血管病发病、心脑血管病死亡、总死亡风险分别下降约20%、22%及15%。换句话说,对于50岁的人群,经常饮茶者发生心脑血管病的时间推迟1.41年,寿命延长1.26年。该研究进一步利用14081名研究对象时隔8.2年的两次饮茶习惯调查信息,分析发现与从不饮茶者相比,坚持长期饮茶者心脑血管病发病、心脑血管病死亡和全因死亡风险分别降低更加显著,降低比例达39%、56%和29%。
  在心脑血管疾病亚型中,该研究发现饮茶习惯对卒中和冠心病的发病及卒中死亡均有较好的保护作用。根据饮茶类型进行的分析表明,习惯饮用绿茶人群的心脑血管病发病死亡及全因死亡风险显著下降,并未发现经常饮用红茶有明显的保护作用。此外,该研究还发现饮茶的保护作用在男性中更为显著,可能由于男性饮茶比例高,且心血管病发病率显著高于女性,使得在男性中更容易观察到饮茶的健康效应。
  研究人员认为,饮茶有益于健康的机制可能与其中富含的茶多酚有关。茶多酚是茶叶中的主要生物活性物质,具有抗炎、抗氧化、改善血压、改善血脂等作用。各类茶叶中,绿茶的茶多酚含量最高;在发酵过程中,茶多酚会被氧化,失去活性,导致红茶中茶多酚含量减低。另外,茶多酚在体内代谢较快,不能长期储存,因此需要长期保持饮茶习惯以从中获益。

 

(转自健康报  4月)

 

 
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