If the body is not producing phlegm, could there be a problem? How is less phlegm production harmful?

Whether in winter or summer, once you catch a cold and cough, it is very difficult to get rid of it. In addition to colds and coughs, problems like colds, sore throats, and phlegm begin to appear. The biggest problem is due to the accumulation of phlegm in the throat. Why does phlegm form? Pollution … Read more