The common causes of poor digestion in your forties include lack of exercise, poor mood, bad eating habits, etc. The causes are handled differently, and common treatments include general treatment and medication. 1. Lack of exercise: If you don’t have a good exercise habit, it may cause fatty liver and other diseases, which will affect the digestive ability and lead to indigestion. This can be improved by moderate exercise, ensuring more than half an hour of exercise every day, and at the same time can use digestive enzymes such as cotrimoxazole for treatment. 2. Poor mood: emotions for the stomach and intestines have a very big impact, if a long time in a bad mood digestive function will be weakened, pay attention to emotional regulation, maintain a healthy emotional state, and if necessary, actively seek psychological treatment. 3. Bad dietary habits: if excessive consumption of spicy and stimulating food, or overeating, excessive drinking and smoking will lead to poor digestive function, often accompanied by microbial disorders of the digestive tract, can be prescribed to take compound digestive enzymes to promote digestion, bifidobacteria to regulate the gastrointestinal tract homeostasis and so on. If the digestive dysfunction cannot be improved by the above methods, it is recommended to take regular treatment in time to avoid delaying the condition.