In order to fully answer this question, it is first important to know where the intestinal metaplasia is occurring. Usually intestinal metaplasia is diagnosed by a biopsy
sample taken during upper endoscopy, and this typically can be found in either the esophagus or in the stomach. The causes of the findings in the two locations are somewhat related, but different. For example, metaplasia in the esophagus is usually related to chronic acid reflux
into the esophagus. On the other hand, metaplasia in the stomach is more likely to be related to either a genetic tendency to the disorder or to infection of the stomach with a bacteria called Helicobacter pylori (which also may be associated with increased acid reflux).
In either case, eating a diet that does not provoke acid secretion or reflux may be helpful, especially if you have any symptoms of heartburn. These foods differ from person to person but could include coffee, alcohol, tomatoes, chocolate, and greasy foods.
However, changing your diet will not be the only thing that will need to be done. You will need to talk to your gastroenterologist
in detail to determine what other treatments, such as acid suppressing medications, will be needed long term. Please discuss with him or her soon.