喝茶防中风 “重男轻女”!中国慢病前瞻性研究

2020-04-08 岱西 中国循环杂志

根据中国卒中报告,我国是卒中大国。我国每12秒就有一人发生脑卒中,每21秒就有一人死于脑卒中。脑卒中是我国国民第一位死亡病因。

根据中国卒中报告,我国是卒中大国。我国每12秒就有一人发生脑卒中,每21秒就有一人死于脑卒中。脑卒中是我国国民第一位死亡病因。

近日,中国慢病前瞻性研究最新分析显示,饮茶是个好习惯,有助于预防脑卒中,尤其是绿茶,但仅在男士中有预防作用。

研究发现,偶尔喝茶、每周喝茶、每天喝茶,随着饮茶频率的增加,脑卒中发生风险渐呈下降。

与从不饮茶的人相比,每天饮茶能降低8%的脑卒中风险。

此外,与不饮茶的人相比,饮茶年头长、泡茶茶叶“抓”得多的人脑卒中风险也降低。

不过,饮茶预防脑卒中“重男轻女”。

每日饮茶者中,对于男士随着饮茶时间和量的增加脑卒中风险明显降低,而对于女士则非如此。即使考虑了男士吸烟喝酒,茶还是“偏向”男士。

就红茶、绿茶以及乌龙茶不同类型的茶而言,绿茶显着降低总的脑卒中风险,以及脑梗死和脑出血风险,但其他茶没有发现这种关联。

图1 应用绿茶和非绿茶对脑卒中风险的影响

茶叶中的茶多酚有助于调节血脂、降低血糖、降低动脉粥样硬化风险;此外,茶多酚中的儿茶素还可能增加血一氧化氮水平,改善内皮细胞功能。这些均有助于降低脑卒中风险。

研究者推测,绿色之所以优于其他茶,可能与茶的加工过程有关,绿茶更具抗氧化能力。此外,这项研究中应用红茶和乌龙茶的人偏少,或也对结果有所影响。

这项中国慢病前瞻性研究最新分析共纳入超过48万名35~74岁的成年人,其中男性占40.9%,参与研究时均无缺血性心脏病或脑卒中。在随访期间,总共发生了3.87万例脑卒中。

26.3%的人几乎每天都饮茶;男女分别有41.1%和15.9%的人每日饮茶。各色茶中人群主要饮用绿茶,占86.7%。整体饮茶人群中,男性较之女性饮茶时间更久,消耗的茶叶量更多。

来源:

[1]Tian T, Lv J, Jin G, et al. Tea consumption and risk of stroke in Chinese adults: a prospective cohort study of 0.5 million men and women. Am J Clin Nutr, 2020,111(1):197–206.

[2] 王陇德、刘建民、杨弋等.我国脑卒中防治仍面临巨大挑战—中国脑卒中防治报告2018概要.中国循环杂志.2019,34:105-119.

 

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    2020-04-10 hbwxf
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    2020-04-09 guging

    中风是俗称,应该称为缺血性卒中吧

    0