Following a history of gastric pain and an endoscopy, a patient has been diagnosed with a duodenal peptic ulcer. Which of the following teaching points should his caregiver provide?

1) Ulcers like yours are usually found in the stomach rather than the upper part of the small intestine.
2) Your family history, your smoking, and the painkillers you've taken in the past may all have contributed to this problem.
3) While there aren't really any effective medications for these ulcers changes in lifestyle can keep them well controlled.
4) While your diet most certainly contributed to this problem, the good news is that changing your diet can solve it.