1. What color is the sputum of normal people?
Under normal circumstances, due to the human body's own defense system, the respiratory tract will secrete certain mucus to ensure the cleanliness of the air, thus forming sputum. The color of normal people's sputum is white or grayish white, but if there is green sputum, it means that it is likely that the human respiratory tract is inflamed due to infection, usually due to viruses, bacteria, physical factors, chemical stimulation, allergies and other reasons, resulting in green sputum. At this time, it is necessary to closely observe whether the patient has other discomfort.
Second, what is the matter that phlegm is green?
1, respiratory tract infection
When the respiratory tract is infected by viruses and other pathogenic bacteria, the sputum will appear green. Specifically, the green sputum comes from enzymes in immune cells that respond to diseases. When lung diseases such as bronchitis or pneumonia occur, bacteria, viruses or fungi brought by the disease will be wrapped and killed by phagocytes of the body's self-defense mechanism, and then excreted through sputum.
2, bad environmental stimulation
When the air quality is poor, there is fog, haze, or dry air is inhaled, mucus secreted by the human respiratory tract will adsorb tiny particles in the inhaled air and form sputum to be excreted.
3, sinusitis infection
When the sinus is stimulated and the air cannot pass smoothly, it is easy to get infected because of the growth of viruses or bacteria, causing sinusitis. Because the nasal cavity is the top of the respiratory tract, it is easy to let green snot flow into the throat, thus producing green sputum.
4. Smoking for a long time
Smoking is also a common infection that causes green phlegm. Because cigarettes contain a lot of smoke and small fragments, they stimulate the airways of the lungs and produce green sputum. This type of damage and accumulation will weaken lung function and make it more susceptible to infection. Therefore, people who regularly smoke are mostly green and sticky, with a large amount of phlegm.