Many white-collar workers come home late at night, but many of them still do something delicious to comfort themselves, always thinking that going to bed hungry is not good for the body. Recently, Japanese medical experts found that 38.4% of stomach cancer patients had irregular dinner time in a study on the dietary status of people in the 30-40 age group. The gastric mucosa is a layer of tissue covering the inner surface of the stomach, containing different secretory glands, and is a complex secretory organ, but the life span of the epithelial cells of the gastric mucosa is very short, about 2 to 3 days to renew and regenerate, and this regeneration and repair process is generally carried out at night when the gastrointestinal tract is resting. If you often eat at night, the gastrointestinal tract can not be well rested and adjusted during this time, the regeneration and repair of the gastric mucosa can not be carried out properly. In addition, after eating night snacks and then sleep, the food stays in the stomach for a longer time, which can promote the secretion of gastric juice, causing a long time stimulation of the gastric mucosa, which, over time, leads to mucosal erosion, ulcers, weakened resistance and lesions.