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Bad medicine

机译:坏药

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摘要

THE symbiosis between human beings and the bacteria dwelling in their guts is a delicate thing. When it works well, both sides benefit. The bugs get a comfy home. The hosts get help with their digestion, making more food available than otherwise would be. If relations are upset, though, bad consequences may flow. Both obesity and malnutrition can be exacerbated by the wrong gut bacteria. Illnesses such as asthma and eczema are linked to a lack of certain bugs from an infant's intestines. And there is evidence, from experiments on mice, that an absence of gut flora affects the development of the brain. Such absence weakens the blood-brain barrier, which normally helps to keep foreign material out of that organ. It also seems to make animals less sociable than would otherwise be expected.
机译:人与内脏中细菌的共生是一件微妙的事情。如果运作良好,双方都会受益。虫子有一个舒适的家。主人在消化方面得到帮助,可以提供更多的食物。但是,如果关系不安,可能会产生不良后果。错误的肠道细菌会加剧肥胖和营养不良。哮喘和湿疹等疾病与婴儿肠道缺乏某些臭虫有关。而且从老鼠的实验中有证据表明,肠道菌群的缺乏会影响大脑的发育。这种缺乏会削弱血脑屏障,这通常有助于将异物排除在该器官之外。这似乎也使动物的交往能力降低了。

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  • 来源
    《The economist》 |2017年第9036期|67-68|共2页
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