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美国研究称空气污染导致肥胖 网友:难怪瘦不下来

2018-11-12 14:08:19   海外网 

(原标题:美国研究称空气污染致肥胖网友:难怪瘦不下来)

海外网11月12日电众所周知,空气污染危害人体健康,并且会引发呼吸道及心血管类的疾病。美国大学的一项最新研究指出,空气污染除了引发各种疾病,还是导致肥胖的一大因素。

据英国《每日邮报》报道,美国加利福尼亚大学的研究人员通过对2300多名美国儿童的跟踪调查发现,10岁的儿童中,在幼年时经历过严重交通污染的孩子与呼吸着干净空气的孩子相比,平均体重重2磅(约0.9公斤)。

最重要的是,通过对这些儿童进行肺部扫描发现,生活在污染较严重地区的儿童除了体重偏重之外,肺部也有损伤迹象。

科学家们认为,吸入交通烟雾、香烟烟雾中的刺激性微粒会引发身体的一系列炎症。首先,污染物刺激肺部微小的气囊,引起应激反应,使激素释放,进而导致身体从食物中吸收能量(或葡萄糖)的能力降低,使血糖水平失控。当血糖水平不稳定时,就会刺激人的食欲,从而可能引发过度进食。

污染物还会刺激“细胞因子”的释放,这些分子会使免疫系统过度工作,从而引发大脑和身体的炎症。研究人员通过对小白鼠进行试验发现,这种脑部炎症也会导致暴饮暴食。

此外,污染物还会损伤人体的肺部,也会导致心脏病和中风。

空气污染引发肥胖的研究引发了网友热议,有网友表示,“难怪瘦不下来,原来是因为空气污染”。还有网友表示,“既然是空气污染惹的祸,是不是就可以尽情地吃东西,不用去锻炼了……”有网友开玩笑表示,“要是在空气污染的情况下,再吃块巧克力,估计会胖一大圈”。也有网友质疑,称引发肥胖最主要的因素其实还是饮食。

责任编辑:苖玉轩 CN074
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