Scientists found something called the glymphatic system, a clean-up mechanism that removes this buildup and is much more active when we're asleep.

科学家们发现了一叫glymphatic system 的脑部淋巴系，一能清除这些积聚物的清扫系，当我们睡觉的时候这个系更加活跃。

A buildup of such chemicals can be deadly, leading to among other things forms of insanity, schizophrenia, and other disorders which show themselves in mental or personality symptoms.

这类化学物的积聚，可以是致命的，导致病，包括精神错乱、精神分裂，以及表现出精神或人格症状的其他紊乱。