Washing with soap every day could affect our immunity, warns Dr Robyn Chutkan, of the Digestive Center for Women, Maryland.
马里兰州妇女消化中心的萝宾·库特坎博士警告称，每天用肥皂洗澡可能会影响我们的免疫力。
Dr Chukan said it strips our skin of the bacteria that keeps us free from conditions like acne and eczema.
库特坎博士说肥皂会剥离皮肤上的细菌，而这些细菌会抵御痤疮和湿疹的生长。
Regular contact with grime, rather than being harmful, teaches these communities of bacteria how to tell the difference between friendly germs and harmful pathogens, she said.
经常接触污垢不仅无害，还会教会这些细菌群如何辨别有益的细菌和有害的病菌，她说。