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睡不好或加速大腦衰老

睡不好或加速大腦衰老

來源:北京青年報

近日發(fā)表的一項美國研究再次證實了睡眠的重要性:40歲中年人經(jīng)常睡不好,15年后大腦或加速衰老,而且睡不好特征越多,大腦衰退越快。

據(jù)悉,這些睡不好的特征包括睡眠時間短、睡眠質(zhì)量差、難以入睡、難以持續(xù)睡眠、早醒、白日嗜睡。

這項研究共對589位參與者的相關(guān)數(shù)據(jù)進(jìn)行了分析,參與者平均基線年齡40歲,53%為女性,平均隨訪15年。這些參與者中,約70%睡不好特征不超過1個,22.8%報告2至3個,8.3%報告3個及以上。

研究顯示,有以上2個或3個睡不好特征的人,比睡得好沒有上述煩惱的人大腦年齡要老1.6歲;如果睡不好特征超出3個,大腦年齡要變老2.6歲。而且研究還發(fā)現(xiàn),在隨訪的15年期間,持續(xù)睡不好的這些特征均與大腦變老有關(guān)。這提示,中年早期睡不好就可能加速了大腦的衰老。

還有研究已將中年睡眠差與腦萎縮或認(rèn)知問題掛鉤。研究者認(rèn)為,大腦深度老化與認(rèn)知能力下降和阿爾茨海默病相關(guān)萎縮模式有關(guān),睡不好或是早期干預(yù)的一個重要目標(biāo)。而且對于中年人,大腦和認(rèn)知衰老的其他危險因素如精神狀況差、壓力大、肥胖、糖尿病、高血壓、高膽固醇血癥和久坐不動等常常并存,如此結(jié)合更是凸顯了中年時期干預(yù)的重要性。

不過,該研究為觀察性研究,還不能證實因果關(guān)系。

文/楊進(jìn)剛(中國醫(yī)學(xué)科學(xué)院阜外醫(yī)院)