少吃盐 因为过量吃盐,口腔内溶菌酶的含量也相应减少,这就为病原微生物在上呼吸道粘膜生存创造了条件,而使它们能够为非作歹而诱发感冒。所以,少吃盐可防感冒。 放松 精神紧张会降低免疫系统的防御功能,使人易患感冒。科学 Eat less salt because of excessive salt, the oral lysozyme content is also reduced, which for the pathogenic microorganisms in the upper respiratory tract mucosa to create the conditions for survival, so that they can induce a cold for any evil. So, eat less salt to prevent colds. Relaxing nervousness can reduce the defensive function of the immune system, making people susceptible to a cold. science