The disadvantages of eating too fast are that it may cause indigestion, excessive calorie intake and other problems. 1. indigestion: eating too fast, food can not chew, swallowed into the digestive tract, may increase the digestive burden of the gastrointestinal tract, resulting in some of the gastrointestinal tract is more sensitive to the crowd easily triggered by gastric pain, bloating, nausea, vomiting and other undesirable symptoms, which leads to indigestion. 2. Excessive calorie intake: eating too fast, the human satiety center has not had time to react, people have been consuming too many calories, easy to unknowingly excessive calorie intake, easily lead to obesity and other health problems. If it is chewing slowly, it is easier to control the total calorie intake, which is conducive to weight control. Eating too fast may have other disadvantages, it is recommended that each meal time 15 to 20 minutes, chewing in moderation, is conducive to maintaining good health.