Eating without flavor is related to insufficient salivary secretion, bacterial infection, psychological factors, taste bud degeneration and so on. It is recommended to go to the regular hospital for examination, after clarifying the cause of the disease, the treatment of the cause. 1. Insufficient saliva secretion: when people eat, the mouth can not secrete enough saliva, the starch in the food can not be decomposed, it will feel tasteless. 2. Bacterial infection: the secretion of Candida albicans can block the taste holes of taste buds, so that the taste buds can’t feel the flavor of food, and thus the uncomfortable symptom of having no taste of food occurs. 3. Psychological factors: If people are under some kind of psychological stress (such as anxiety, depression, etc.), the sense of taste will also be temporarily lost, so that people appear to have no taste of food. It is recommended to be channeled under the treatment of a psychiatrist. 4. Degradation of taste buds: As people grow older, their taste buds will gradually deteriorate. In old age, eating will gradually become tasteless. If you have no taste of food for a long time, or accompanied by other discomforts, you should consult a doctor in time.