那些更容易感染疾病和寄生虫的男性将不得不使用他们的类胡萝卜素来增强他们的免疫系统。
Males that are more susceptible to disease and parasites will have to use their carotenoids to boost their immune systems.
由于没有像我们的祖先一样受到肠道蠕虫和寄生虫的感染，我们的免疫系统变得更加敏感。
Without being exposed to intestinal worms and parasites, as our ancestors were, our immune systems are hypersensitive.
Rook说，其他研究人员利用卫生假说治疗疾病的实践结果表明，寄生虫感染能帮助治疗多发性硬化病和克罗恩病等免疫性疾病。
Rook said that other researchers have used the hygiene hypothesis to show that parasitic infections can aid in the treatment of such conditions as multiple sclerosis and Crohn's disease.
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