Yeah, gay bowel disease seems like a useless term coined back in the day. Apparently "even in the mid-1980s, professional groups were distancing themselves from the term".
Then there's this.
Gays, Lesbians Practice Healthy And Unhealthy Behaviors; You Can't Say They 'Have Poorer Overall Health'
It's clearly a topic you care about a lot, so how about you do some research on it?
From the link I posted earlier: "At the same time, almost half of straight women today will engage in anal sex."
Horrible idea. There's no need to abuse these people and you can bet on churches to do just that.