Why Does My Stomach Hurt After Eating? 8 Possible Causes

Post-meal stomach pain is incredibly common, affecting up to 25% of people regularly. While occasional discomfort from overeating is normal, persistent pain after meals deserves investigation. Top 8 Causes 1. Functional Dyspepsia (Indigestion): The most common cause — a catch-all term for upper abdominal discomfort without a clear structural cause. Often triggered by eating too quickly, fatty foods, or stress. 2. Gastritis: Inflammation of the stomach lining caused by H. pylori bacteria, excessive alcohol, or chronic NSAID use. Produces burning or gnawing pain that may worsen or improve with food. 3. GERD (Acid Reflux): Stomach acid flowing back into the esophagus causes burning chest pain and upper abdominal discomfort, typically worse after large meals or lying down. 4. Lactose Intolerance: Inability to digest the sugar in dairy products causes bloating, cramps, gas, and diarrhea within 30 minutes to 2 hours of consuming dairy. 5. IBS (Irritable Bowel Syndrome): A functional gut disorder causing recurrent pain with altered bowel habits. Pain typically improves after a bowel movement. 6. Gallstones: Cause sharp, intermittent pain in the upper right abdomen, especially after fatty meals. The pain may radiate to the right shoulder blade. 7. Peptic Ulcer: Open sores in the stomach or duodenal lining that cause burning pain. Duodenal ulcers typically hurt when the stomach is empty; gastric ulcers may hurt after eating. 8. Food Allergies or Sensitivities: Unlike intolerances, food allergies involve an immune response and can cause abdominal pain, hives, and in severe cases, anaphylaxis. Management Tips - Keep a food diary to identify trigger foods - Eat smaller, more frequent meals - Avoid lying down within 3 hours of eating - Limit caffeine, alcohol, and spicy foods if they worsen symptoms