It is true that eating sugar when you have a cold can easily lead to coughing. A cold is caused by a decrease in immunity and infection of the organism by pathogens, which causes an inflammatory response in the mucous membrane of the upper respiratory tract, with a large amount of inflammatory secretions exuding, thus stimulating the airway and causing coughing. Sugar consumption causes patients to be more likely to increase mucus secretions in the airways and aggravate symptoms. Sugar is a relatively viscous substance, so avoid foods high in sugar and eat a diet based on fresh vegetables and fruits. Moreover, when the condition is more severe, the damage to the mucous membrane of the upper respiratory tract is more obvious, so you can choose a liquid or semi-liquid diet, which is more likely to relieve the condition and is beneficial to the condition.