Esophagus is an organ that transmits food and has no digestive function, but esophageal cancer can cause indigestion and malnutrition. 1.Decrease in eating, esophageal cancer may cause symptoms of choking and pain when eating, and in serious cases, symptoms such as not being able to eat and vomiting when eating, thus causing malnutrition. 2.Some people may have no appetite, no taste in the mouth or eat this thing, but no taste. But there is no such taste, which will also lead to a reduction in diet and malnutrition.