How can I prevent colon polyps?
Doctors don't know of any one sure way to prevent polyps. But you might be able to lower your risk of getting them if you
- eat more fruits and vegetables and less fatty food
- don't smoke
- avoid alcohol
- exercise every day
- lose weight if you're overweight
Eating more calcium and folate can also lower your risk of getting polyps. Some foods that are rich in calcium are milk, cheese, and broccoli. Some foods that are rich in folate are chickpeas, kidney beans, and spinach.
Some doctors think that aspirin might help prevent polyps. Studies are under way.

source: http://digestive.niddk.nih.gov/ddiseases/pubs/colonpolyps_ez/index.htm
