近數十年來，醫療已取得巨大的進步。例如，光纖的發現讓醫生能夠仔細檢查胃或腸道，並確認問題部位。電腦斷層掃描能呈現3D影像，而無需使用有害的X光。重症醫學、移植醫學和基因工程如今已能夠解決過去的不治之症。但目前仍有許多未知的科學領域，例如那些在現代文明發展下而出現的疾病。
Huge progress has been made in medical practice over recent decades. For example, the discovery of fiber optics has made it possible to take a close look at the stomach or intestine and identify problem zones. Computer tomography creates three-dimensional images without using harmful X-rays. Intensive care medicine, transplantation medicine and genetic engineering are now making it possible to tackle diseases previously regarded as incurable. But there is still much uncharted scientific territory, for example with regard to diseases that have only emerged with our civilization.
8.慢性疾病新療法–透過微生物產生的保護
Chronic Disease–Protection Through Germs
氣喘、過敏、異位性皮膚炎、糖尿病、自閉症等許多慢性疾病是根源於免疫系統的問題，在過度乾淨的世界裡，免疫系統可能會出問題，荷蘭科學家及德國兒科醫師正在為這項理論提供證據兩位研究人員都認為，過於衛生的環境對兒童弊大於利，因為人們必須暴露在一定數量的「灰塵」，才能發展健全的免疫系統。

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