Old people are prone to indigestion for the following reasons; (1) After aging, the gastrointestinal mucosa becomes thinner or atrophied, and the secretion of digestive juice decreases, which is not conducive to the digestion and absorption of food;

(2) The teeth of the elderly fall off and loosen, which affects the chewing of food and hinders the absorption of nutrients;

(3) the elderly are prone to mental anxiety, which leads to loss of appetite and blocked digestive function;

(4) The digestive function of the elderly is prone to disorder, and abdominal distension, diarrhea and constipation often occur, which is also an important cause of indigestion;

(5) If the elderly suffer from some chronic diseases, their physical tolerance is worse than that of young adults, which will have a great impact on the secretory movement and absorption function of the whole body, especially the digestive tract. It can be seen that in order to maintain a good physique after old age, we must ensure nutrition and pay attention to food hygiene, especially to adhere to regular and quantitative eating habits, so that the digestive tract can work normally and avoid indigestion.