Breathing through the mouth may be caused by physiological state, or it may be caused by obstruction of the upper respiratory tract.
Under normal physiological conditions, when the body is calm, breathing through the nasal cavity can satisfy the body’s need for oxygen, but during exercise, oxygen consumption increases, and the nasal cavity alone cannot satisfy the physiological needs, so breathing through the mouth occurs.
Breathing through the mouth can also be caused when the upper respiratory tract is obstructed for various reasons. Commonly in the stimulation of inflammation, mucosal edema, the upper respiratory tract caused by obstruction, resulting in narrowing of the respiratory tract, then the patient will use the mouth to breathe, in order to meet the body’s demand for oxygen.
It may also be due to obesity and tongue hypertrophy, easy to make the tongue fall after sleep, blocking the airway, so that some people will use the mouth to breathe during sleep.
There are many reasons for breathing through the mouth, if it seriously affects the normal life and rest, it is recommended to go to the hospital in time to improve the relevant examination, to clarify the cause of the disease, standardized treatment.