If you had to choose one fruit to keep your colon happy, which would it be? If you said apples, that's not a bad choice. The kind of fiber in apples -- called pectin -- appears to both bump up colon-protective compounds and clamp down on cancer-causing ones.
The Power of PectinIn a lab study, apple pectin increased levels of butyrate, a fatty acid that not only keeps colon tissue healthy but also slows the production of a cancer-causing substance. Apple juice extracts amped up butyrate as well.
~ Via Real Age.