Patients who take sugar are prone to coughing because sugar easily adheres to the mucous membrane of the pharynx during swallowing and stimulates the mucous membrane to stimulate the coughing effect. Especially for patients with upper respiratory tract infections, bronchitis and pneumonia, who usually have cough and phlegm, the pharynx is easily irritated and the coughing symptoms become more pronounced after taking sugar, and some patients are accompanied by wheezing and coughing. Active treatment for the cause of the cough includes not eating sweet, salty or spicy foods to prevent irritation of the pharynx. In addition, you should drink more porridge and soup to replenish body fluids, which are very effective in moistening the airways and reducing cough and phlegm.