Hunger, excessive smoking and drinking and irregular life are the main reasons for the decline of gastric function. Secondly, mental factors can not be ignored. Middle-aged men are nervous at work and have relatively great pressure on life. These repeated adverse stimuli to the cerebral cortex can easily lead to gastric lesions. First of all, nourishing the stomach requires a regular and quantitative diet, chewing slowly and forbidding alcohol. In addition, when the seasons alternate or the temperature changes, you should pay attention to keeping your stomach warm.