"[Anal] Injuries are usually heralded by anodyspareunia – pain during receptive anal intercourse."
International Journal of Surgery Case Reports. 2012; 3(11): 565–568.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3437385/"Q: How do I make anal sex more comfortable?
A: Anal sex isn't pleasurable for everybody. Most women I hear from who want to make it more comfortable are having anal sex just to make their boyfriends happy. Are you kidding? If it hurts and it's awful, the answer should be, "Hey, dickhead, we're not doing this anymore." I'm telling you: Stop it, ladies!
If you have pain, your body is telling you something. There will be medical consequences. In the short term, there's the risk of tears, fissures, and fistulas. But I'm much more concerned about the long term. Go talk to a 75-year-old woman sometime who hasn't had anal sex, and you'll see that as you age, the rectal area has tons of problems associated with it anyway. You can get hemorrhoids and abscesses, and the rectum can prolapse into the vagina [rectocele] or out of the anus — and that's without ever having anal sex. Yet you're setting yourself up for these things with this behavior! If you don't have pain with anal sex, then your body may be tolerating it, although you still run the risk of problems. I shudder to think what's going to happen to young women later on when they continue to have painful anal sex.
—Drew Pinsky, M.D." (published February 19, 2000)
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