A man is diagnosed with a peptic ulcer. He tells you that he had an ulcer many years ago and that he watched his diet carefully and used antacids, and eventually the symptoms subsided. He asks if he...

A man is diagnosed with a peptic ulcer. He tells you that he had an ulcer many years ago and that he watched his diet carefully and used antacids, and eventually the symptoms subsided. He asks if he should start doing this again. What should you advise him?