Cellulose is a natural part of several foods such as oranges and celery. I think it is also found in most beans. Do we have someone on the QB who has studied this? I was of the opinion that almost all high fiber foods had cellulose as their fiber and it was natural in its occurance and was seldom if ever digestible. It's value to our digestive system is the fact that it isn't digestible. Without it we would be taking laxatives every day. Or am I mistaken?