How do you prevent polyps from forming?

Need more info. Polyps where? Please expand your question, and give more medical work up done or your history. Need more info to help you out. Thanks!
Prevent colon polyps. Consensus of opinion varies from studies aimed at preventing colon polyps & colon cancer. Genetics with polyposis syndromes can't be altered. However, some medical literature shows significant benefit in reducing polyps by taking Aspirin & nsaid's, diets rich in fruits/vegetables/whole grains, reducing fat intake, weight control, calcium, stop smoking, curtail alcohol use. Get a colonoscopy too!