Understanding the Meaning of Sputum Colors: What Your Phlegm Is Telling You About Your Health
Doctors say that the color of sputum can determine the health status of the body. (Schematic diagram/pixabay) Phlegm is the secretion of the human respiratory tract. It can keep the respiratory tract moist and absorb dust, bacteria and other microorganisms to be expelled from the body. According to common sense, usually healthy people have no … Read more