I have Crohn's disease and was wondering if peanut butter can cause constipation.
What bothers a GI tract really depends on the person. Some people with Crohn's disease avoid peanuts/peanut butter. Others handle it fine. Roughage tends to be a problem for many. If you notice a pattern with constipation and consuming peanut butter, track it in your food journal and discuss it with your GI doctor.
Here are some other articles that you might find useful as you learn to better manage and understand your Crohn's disease:
Live BOLD Live NOW with Crohn's
10 Questions to Ask Your Doctor About Crohn's Disease
Best of luck to you!