All good questions, Norby. My child's dad and I have both always been quite thin, I'd guess the 5th%ile or below, and we don't have IBD. I pointed this out to the doc, but it doesn't seem to make a difference to her. I think I just need to be done with her and move on to someone more open to other approaches before diving into IV immunosuppressants. Just because a dangerous drug is "proven" to stave off other problems doesn't make it the best choice.