Can a thick tongue coating cause bad breath?

Thick tongue coating may contribute to halitosis. Tongue coating is a moss-like substance on the tongue surface, produced by stomach qi. Under normal circumstances, it is thin, white, and moist. When the tongue coating becomes thick and greasy, it often reflects pathological conditions in the body such as dampness, food stagnation, phlegm-turbidity, or heat pathogenic factors. These pathological factors not only impair the digestive functions of the spleen and stomach, leading to indigestion and upward reversal of foul-smelling gases, but also may promote increased bacterial growth in the oral cavity, further aggravating halitosis. Therefore, there is a close relationship between thick tongue coating and halitosis. To improve halitosis, in addition to maintaining good oral hygiene and regularly cleaning the tongue coating, it is also important to address the underlying conditions by regulating the spleen and stomach, resolving dampness and phlegm, and promoting digestion and alleviating food stagnation. Comprehensive improvement of body constitution can be achieved through adjustments in dietary habits, increased physical activity, sufficient sleep, and seeking TCM (Traditional Chinese Medicine) regulation when necessary, thereby addressing both thick tongue coating and halitosis at their root.