Anal sex is a bit of a taboo subject, despite the fact that its an increasingly popular sexual activity. As more couples explore this type of sex, understanding the risks, rewards, and proper. Oral contact with the anus can put both partners at risk for hepatitis, herpes, hpv, and other infections. how might anal sex cause fecal incontinence? The authors point out that the internal anal sphincter muscle is responsible for maintaining the resting pressure of the anus (i. , keeping the anus closed, and keeping stool inside where it belongs), and previous studies show that men who receive anal intercourse have lower anal resting pressure. The truth yes, i have actually heard this in my office more than once. It usually has to do with a couple that has more than one sexual issue. kerner says anal sex can trigger a bout of it, which is pretty much guaranteed to be a mood killer. No matter what, keep this in mind if something feels wrong, it probably is wrong, says kerner. in fact, as many as 25-40 of women have tried anal sex (fewer practice it regularly) and anal incontinence - a condition which might lead an adult to wear a diaper - is uncommon. rectal gonorrhea, anal chlamydia, and hiv are all real risks. According to the united states centers for disease control and prevention, anal sex is the highest-risk sexual behavior for hiv. Penetrative anal sex has a higher risk of spreading stis than many other types of sexual activity. as with vaginal sex (penis-in-vagina sex), theres a very small risk of leakage and prolapse (when your pelvic muscles weaken and cause organs to slip down) over the course of a lifetime. Anal sex is any type of sexual activity that involves the anal area. Whether you are thinking of having anal sex for the first time, or you just want more information on how to stay safe and enjoy it, this page will help answer your questions.