Eating too fast may cause gastric mucous membrane damage, indigestion, esophageal foreign body and other hazards. 1. Gastric mucous membrane damage: eating too fast will lead to the food eaten, can not be well absorbed by the stomach and intestines, aggravate the burden of the gastrointestinal tract, if long time this may cause some damage to the gastric mucous membrane. 2. Indigestion: If you eat too fast, the food is not fully chewed, the digestive juices can not be fully digested, the food is hoarded in the digestive tract, resulting in indigestion. 3. Esophageal foreign body: If you eat fish or other hard and thorny food too fast, it may become embedded in the esophagus. In severe cases, it may puncture the esophagus, form mediastinal gas, or even cut through the aorta, which is life-threatening. So it is still recommended to chew and swallow slowly when eating to help digestion and absorption of food, and can avoid accidental ingestion of foreign objects.