In this Stem Cell Blog, there has been a high level of success with Adult Stem Cell Therapy. You can read what Dr. Margolis says at:
http://donmargolis.com/blog/2009/02/stem-cell-research-crohns-disease-adult-stem-cells/.
There are products with AFA, a natural botanical, that can increase the release of Adult Stems Cells, so we can essentially heal ourselves, without invasive procedures.