No one in my family with UC but my mom does have fibro. Which made me wonder a little. Maybe they should look at auto-immune disease in general as being genetic and not just at UC/IBD specifically. She had endometriosis too but I didn't think that was auto-immune (in fact, she was pregnant with me when she had it, they told her she couldn't have kids XD )? I dunno though. I also have asthma but my brother smoked around me all the time when I was a kid. Still does
I don't think that's auto-immune either. Maybe some types are though. Not mine.