Parasites don't commonly cause blockages, but they can sure cause a variety of problems. We are just as prone to such intestinal infections as anyone else, but an easy mistake to make with J-pouchers is to forget to check for infections. I'm glad he's thinking outside the pouch.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .