Side effects and risks
A few other side effects are possible with anal sex. These include:
Spreading STIs. Infections and diseases that are shared during sexual intercourse — such as HIV, gonorrhea, chlamydia, and herpes — can be shared through anal sex. In fact, anal sex is the riskiestTrusted Source sexual behavior for transmitting and getting HIV for both men and women. People on the receiving end (or “the bottom”) of anal sex are 13 timesTrusted Source more likely to become infected with HIV than the inserting partner (or “the top”).
Hemorrhoids. Stretching and pushing from anal sex can irritate existing hemorrhoids, but it’s unlikely to cause the dilated and stretched blood vessels inside the rectum and anus.
Colon perforation. This is very uncommon, but it’s possible that anal penetration can puncture a hole in your colon. Surgical repair is necessary, so if you experience heavy rectal bleeding and abdominal pain following anal sex, see your doctor.
Thanks to all