As with any edible mj, the end result is pretty much the same, however its quite dificult to control the high (duration/strength) compared to smoking or vape. Personally, I´ve eaten hash melted into hazelnut yogurts and its worked fine for me during a few of my bad days.
The main problem is a lot of people with Crohn´s or ibd would have problems injesting any type of food, beneficial or not, whilst suffering severe bouts of diarrhea or stomach pain.
By the way, a side note: New treatment for Crohn´s being sucessfully used in Barcelona, it uses your own body´s stem cells to "reboot" your immune system:
Stem Cell Treatment