An ulcer is a sore in the lining of the digestive tract. While it can be treated with medication -- including antibiotics and those that reduce stomach acid -- you should also make certain dietary and lifestyle changes, the American Academy of Family Physicians says.

The academy recommends avoiding the following if you have an ulcer:

* Foods or beverages that contain caffeine.
* Alcoholic beverages.
* Smoking.
* Anti-inflammatory drugs like aspirin and ibuprofen.
* Spicy foods.