The causes of ulcers have perplexed medical researchers for years. However, recent studies have found a link between the bacteria H. pylori and inflammation of the stomach lining, gastritis, and ulcers. In fact, new research suggests that the bacteria may also be linked to stomach cancer.  Helicobacter pylori bacteria commonly live in the mucous layer that covers and protects tissues that line the stomach and small intestine. Often, the H. pylori bacterium causes no problems, but it can cause inflammation of the stomach’s inner layer, producing an ulcer.

Stress ulcers come on suddenly, usually as a result of physiological stress. Some acidic foods can make ulcers worse, as can physical stress, such as the stress of a serious injury or infection. This may be because stress increases stomach acid. You will most likely feel burning pain or discomfort between your belly button and breastbone. You might especially notice it on an empty stomach, such as between meals or at night. The pain may stop for a little while if you eat or take an antacid but then return. The pain can last for a few minutes or a few hours and may come and go for many days or weeks.