人感到口干舌燥,是由于口腔的唾液不足或完全没有唾液。在正常情况下,唾液是透明、无味、无菌的。唾液对人体健康有十分重要的作用。唾液除使口腔保持湿润、帮助吞咽和消化食物之外,还是抗微生物的宝库,它能祛除人在新陈谢过程中产生的有毒物质以及引起疾病的大量微生物。口干舌燥不仅仅让人感到不舒服,而且是患上某种疾病之前身体产生一系列紊乱的初期症状。因此,人如果出现了口干舌 People feel dry mouth, due to lack of oral saliva or no saliva. Under normal conditions, saliva is clear, odorless and sterile. Saliva on human health has a very important role. In addition to moisturizing the mouth to help swallow and digest food, saliva is also a treasure trove of antimicrobials that removes the toxic substances that are produced during the new process of metabolism and the large number of microorganisms that cause disease. Not only does it feel uncomfortable, but it is also the initial symptom of a series of disturbances in the body before suffering from certain diseases. Therefore, if there is a dry mouth tongue