What Is Phlegm (Balgam) ? Better Understanding of Phlegm

Phlegm also called sputum or Balgam. It is a sticky substance that is produced by the respiratory system to help trap and remove harmful particles, such as bacteria, viruses, and dust, from the lungs. While a small amount of sputum is normal, coughing up excess amounts of it can be a sign of an underlying … Read more