1. Irregular diet: Young people may be under pressure from work or study, leading to irregular diet, excessive drinking or eating spicy, greasy and irritating food, leading to excessive gastric acid secretion or irritation of gastric mucosa, leading to stomach pain.

2, tension and anxiety: long-term tension and anxiety will lead to gastrointestinal tension, which will affect the digestive function of the gastrointestinal tract and lead to stomach pain.

3, gastric acid reflux: gastric acid reflux is a symptom caused by food and acid in the stomach flowing back to the esophagus or throat, stimulating the mucosa of the esophagus and throat, often accompanied by stomach pain.

4, digestive system diseases: such as gastritis, gastric ulcer, cholecystitis, gallstones and other digestive system diseases, may lead to stomach pain.

5. Adverse drug reactions: Some adverse drug reactions may cause stomachache, such as non-steroidal anti-inflammatory drugs and antibiotics.

6, long-term smoking: chemicals in tobacco stimulate the gastrointestinal tract, leading to stomach pain.

7, infection: bacteria, viruses and other infections may also lead to stomach pain.