The likelihood partly has to do with why the person has the ulcer. The majority of stomach ulcers are caused by the bacteria H. Pylori. You can do natural things to reduce the chance of an ulcer (symptom) from having the bacteria, but to get rid of the bacteria antibiotics are your best bet. Certain foods are less likely to aggravate the condition, stress probably does aggravate it too, but the days of blaming the patient for the ulcer are mostly over. The body sometimes can fight a bacterial infection on its own, but it’s difficult. You can also get ulcers from medication. I’ve had this happen. Once the irritant is gone, the body will begin to heal. There are medications that can hasten the healing. I took the medicine. If you have a bleeding ulcer it can be life threatening. If this is the case don’t play around with natural remedies in my opinion. Natural is simply not always better. When a woman is bleeding out from childbirth you have to treat her or she dies. When a person gets strep throat, it’s prudent to take antibiotics or you can develop rheumatic fever or rheumatic heart disease. If you have operable pancreatic cancer (like Steve Jobs) get the operation, nothing in nature is likely to cure pancreatic cancer, and that particular cancer is almost always a death sentence within years.