38 years old is not energetic, always feel hungry, eat on the stomach may be gastritis, gastric ulcer, diabetes and other diseases caused by. 1. Gastritis: refers to acute and chronic inflammation of the gastric mucosa caused by bacteria, fungi, viruses, parasites and non-steroidal anti-inflammatory drugs such as celecoxib, congestion, edema, erosion and other phenomena, which can be manifested as nausea, vomiting, stomach discomfort, heartburn, hunger, fatigue and other symptoms. 2. Gastric ulcer: Helicobacter pylori infection, mental stress, excessive secretion of gastric acid and other factors cause ulcerative changes in the gastric mucosa, causing nausea, vomiting, acid reflux, heartburn, stomach pain, bloating and other symptoms of indigestion, due to the decline in gastrointestinal digestion and absorption capacity, causing weakness, malnutrition and other symptoms. 3. Diabetes mellitus: elevated blood glucose caused by absolute and relative insulin secretion insufficiency, resulting in excessive drinking, excessive eating, excessive urination and weight loss, accompanied by fatigue, nausea and other symptoms. 38 years old is not energetic, always feel hungry, eat on the stomach may also be gastrointestinal malignant tumors and other causes, it is recommended to seek medical attention in a timely manner to clarify the diagnosis, under the guidance of the doctor for targeted treatment.