There have been instances where AAS use and HGH (currently tested with success) have been used by persons with crohn's disease. Test/Winstrol combo seemed to not aggravate symptoms whatsoever and subside them to great extent. HGH is a hot topic for it now as it seems to place it in remission in a large percentage of patients. If he does try it, have him get his inflammation markers checked intermittently while on cycle w/ privatemdlabs.