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What is a peptic ulcer? — A peptic ulcer is a sore that can form on the lining of the stomach or duodenum. The duodenum is the first part of the small intestine. What are the symptoms of a peptic [...]

What causes gas? — Causes of gas include: Swallowing air, often while eating, drinking, or smoking. Swallowed air usually comes back out as a burp. Eating certain foods, such as beans, broccoli, [...]