Vegan and Crohn's - any issues?

My son (age 21) has a diagnosis of Crohn's (in the severe category). He was hospitalized with an obstruction, had C- Diff two times and had illeo cecal surgery - all within 6 months of diagnosis. Thankfully with an amazing GI doctor, successful surgery and medication combination that works (remicade, methotrexate, folic acid, Vitamin B12, colestipol,and VSL) he is considered in a "deep remission." He recently watched a documentary (?) on food and diseases and is has decided to become vegan. Is there any contraindications of being vegan and a Crohnie? I assume there is not but he is convinced this diet change will allow him to eventually manage his Crohn's with diet only - which I don't believe is possible. Ideas or thoughts?

Please tell me the documentary is not "What the health"?
If it is, There is a lot of bad science that looks convincing in it.
I was vegetarian for about a year before crohns developed for me so I can't say it prevented me from getting sick. There is a lot of quackery that abounds with veganism. It's great if you are doing it for the environment and to save animals but as a cure it's inaccurate. Plant based diets (but not totally excluding meat) are more healthy than a western diet.
The Mediterranean diet shows the most promise for overall health and it's what I currently follow. Mostly plants, fish or chicken, get rid of processed, fried foods and limit red meats.

Post Edited (Labradorite) : 9/22/2017 11:49:52 AM (GMT-6)

Thanks for your insights. He did watch "What the health" - I could not remember the title. I reviewed it and was appalled by what I read. His girlfriend is vegetarian and I think they may have decided together. I hope he does not think it can cure Crohn's because I know it cannot. I told him to reach out to his GI doctor and explain what he was doing. He has never been a huge meat eater and rarely any junk food so to switch to veganism (if that is a word!) does not seem too big a leap but I don't want him missing any needed nutrients! I will pass this information on including those reviews!!

I agree and I applaud him being conscious of what he eats BUT I don't want him to go down the path of believing he can cure himself through diet only. I know there are many who say that diet alone has cured them (or at least put them in remission) and I am glad for them. My son has a severe case and his doctor / surgeon have told him that he will need medications the rest of his life and that he WILL have flares. He is so stable right now that I don't want him to try anything impulsive.