Burping a lot is usually caused by swallowing excess air, which can happen when eating or drinking too quickly, chewing gum, smoking, or drinking carbonated beverages. Other common causes include digestive issues like acid reflux (GERD), gastritis (inflammation of the stomach lining), food intolerances (such as lactose intolerance), and behavioral conditions such as aerophagia (swallowing air excessively). Large meals, certain foods, and poorly fitting dentures can also contribute. Sometimes, excessive burping may signal underlying conditions like H. pylori infection or irritable bowel syndrome (IBS) when accompanied by other symptoms like abdominal pain or bloating. Managing these causes often involves lifestyle changes like slowing eating pace, avoiding carbonated drinks, and treating any underlying medical conditions with a healthcare provider's help.