Anal Sex
Anal sex is sexual activity involving the anus; in everyday usage it usually means penetration of the anus by a penis. Broader uses of the term include fingers, toys and oral contact, although these activities differ in sensation and health risks.[1]
This page focuses on consensual anal penetration between adults, with related forms of anal stimulation explained where useful. The receptive partner receives penetration; the insertive partner penetrates. These describe roles in an activity, not a person's gender or sexual orientation.
Anatomy and what is visible
The anus is the external opening of the digestive tract. The short anal canal leads into the rectum. In a person with a vulva, the anus lies behind the vaginal opening, separated from it by the perineum; the rectum and vagina are separate passages.
The internal and external anal sphincters are rings of muscle that help control the opening. Their ability to relax matters for penetration, while anxiety can contribute to tightening. The lining inside is delicate and can tear.[1]
Body position alone does not identify the opening being penetrated. Vaginal intercourse can also take place from behind, and anal penetration can take place while facing a partner. In an image, the point of entry and surrounding anatomy are more informative than the pose.
Sensations, arousal and orgasm
Receiving penetration can involve pressure, stretching or an unfamiliar sensation around the opening. These sensations are not automatically pleasurable. Increasing or persistent pain is a reason to stop rather than evidence that the body simply needs more force.[1]
Experience can change with lubrication, muscle tension and emotional context. NHS psychosexual guidance identifies insufficient lubricant, muscle spasms, injury and infection as physical contributors to pain, alongside factors such as anxiety, tiredness and negative previous experiences. Pain should not automatically be dismissed as “just psychological.”[2]
For a person with a prostate, anal penetration may also apply pressure through the rectal wall to that gland. People without a prostate can enjoy anal stimulation too; prostate stimulation is not a universal explanation for anal pleasure.[3]
Orgasm can occur with anal stimulation, including when it accompanies genital stimulation, but it is not guaranteed. A person's enjoyment cannot be established from facial expression, penetration depth or a partner's impression of tightness.[3]
The insertive partner does not directly experience the receiving partner's internal sensations. Ease of movement therefore does not establish comfort; feedback is more informative than assuming that silence means everything feels good.
What research says about pleasure
A 2022 U.S. probability survey of 3,017 women aged 18–93 examined a broader range of anal touch than intercourse alone. About 40% reported pleasure from touch on or around the anus, termed Anal Surfacing; approximately 35% had experienced pleasure from shallow penetration, termed Anal Shallowing.[4]
The researchers also described Anal Pairing: anal touch combined with another form of stimulation, such as clitoral touch or vaginal penetration. This helps explain why “orgasm during anal sex” does not necessarily mean that anal penetration was the only stimulation involved.[4]
These were overlapping, self-reported experiences, not three mutually exclusive groups. The findings do not show that 40% of women enjoy penile anal intercourse, or that deeper penetration produces more pleasure. The survey was cross-sectional and commercially funded; it describes reported preferences rather than proving a technique will work for an individual.[4]
Comfort, communication and lubrication
Agree on the activity and protection being used, and allow either person to stop or change their mind. Consent to vaginal sex, external anal touch or a toy does not automatically include penile anal penetration.[5]
The anus does not supply its own sexual lubrication in the way the vagina can. Added lubricant reduces friction; vaginal wetness does not establish that the anus is adequately lubricated. Penetration should be gradual and unforced, with pauses or stopping whenever needed.[1]
Use a lubricant compatible with the condom and toy. Water-based or silicone-based lubricant can be used with latex condoms; oils can weaken latex. Check product instructions for compatibility, particularly when combining silicone lubricant with a silicone toy.[6][7]
Anal toys need a suitable flared base or other design preventing complete insertion. A butt plug is shaped to remain in place, whereas a dildo may be designed for movement; not every vaginal toy is suitable for anal use.[7]
Hygiene and bodily fluids
Some fecal residue is possible even after washing. This does not mean somebody has failed at preparation, and a visually clean surface is not necessarily free of intestinal microorganisms.[5]
Douching is not required. Excessive internal washing or irritating products can damage rectal tissue; gentle external washing is a simpler approach. Avoid treating repeated douching as a guarantee against infection or visible residue.[5]
Before moving a penis, finger or toy from the anus to the vagina, wash it carefully or replace its condom as applicable. Clean shared toys according to their instructions and change condoms between users.[8][7]
Fluid visible around the genitals during anal sex is not automatically from the anus. See Anal Squirt for the distinction between the location being stimulated and the source of a fluid.
Infections and pregnancy
Anal intercourse can transmit sexually transmitted infections. Receptive anal intercourse has a higher HIV acquisition risk than insertive anal intercourse when exposure to transmissible HIV occurs; the actual risk also depends on the partner's viral load and prevention methods.[9]
Condoms reduce risk but do not prevent every infection. PrEP is medication taken to prevent HIV; it does not protect against other STIs. A person with HIV who maintains an undetectable viral load on treatment does not transmit HIV through sex: U=U, or undetectable equals untransmittable.[5][10]
After a possible HIV exposure, such as a condom failure in a situation where HIV transmission is possible, seek urgent assessment for PEP. It must start within 72 hours, and the sooner the better; do not wait for symptoms.[11]
Tell a sexual-health clinician about anal exposure when arranging testing. A rectal swab may be appropriate; a urine or vaginal test alone does not test the rectal site.[12][13]
Anal penetration itself does not cause pregnancy. Pregnancy is possible if semen reaches the vulva or vagina, including by leaking from the anus onto the vulva. Avoiding vaginal penetration does not remove that separate route of exposure.[14]
Lasting effects and warning signs
Temporary relaxation during penetration is different from fecal incontinence, which means difficulty controlling stool leakage. It is misleading either to claim that anal intercourse inevitably causes incontinence or to promise that it cannot contribute to injury.
An analysis of 4,170 U.S. adults aged 20–69 found monthly fecal incontinence more frequently among those reporting anal intercourse: 9.9% versus 7.4% in women and 11.6% versus 5.3% in men. This was an association, not proof of causation. The study did not measure intercourse frequency, and its questions about sexual behavior differed between men and women.[15]
Stop penetration if pain or bleeding occurs. Persistent soreness, recurrent bleeding, unusual discharge or new difficulty controlling stool deserves medical assessment; do not assume it is a normal price of anal sex.[16]
Seek urgent care for severe pain, fever or substantial bleeding, and emergency care for bleeding that does not stop. A toy trapped inside the rectum also needs prompt medical help rather than forceful attempts with household tools.[17][7]
Terminology and interpreting images
Related terms describe activities or roles rather than one uniform experience:
- anal intercourse or penile-anal intercourse: penetration by a penis.
- anal penetration: a broader term that can include fingers or toys.
- anal play: may include external stimulation without penetration.
- butt sex: an informal name for anal sex.
- receptive anal sex and insertive anal sex: the two roles in penetration.
- rimming or anilingus: oral contact with the anus, a different activity from intercourse.
A sexual image can illustrate anatomy or position, but cannot establish comfort, consent, preparation time or orgasm. Visible wetness also does not establish adequate lubrication inside the anal canal. Photographs are illustrations of a particular moment, not evidence of what everyone enjoys or a standard for depth, speed or duration.
See also
References
- ↑ 1,1 1,2 1,3 1,4 Cleveland Clinic. Is Anal Sex Safe? 2022; guidance from gastroenterologist Michelle Inkster. Anatomy and safety
- ↑ Sex Therapy London, NHS. What is anal pain during sex? Physical and psychological contributors
- ↑ 3,1 3,2 Santos-Longhurst A. Everything You Need to Know About Butt Plugs. Healthline, updated 2026; medically reviewed by Jennifer Litner. Anal stimulation and the prostate
- ↑ 4,1 4,2 4,3 Hensel DJ, von Hippel CD, Lapage CC, Perkins RH. Women's techniques for pleasure from anal touch: Results from a U.S. probability sample of women ages 18–93. PLOS ONE, 2022. Study
- ↑ 5,1 5,2 5,3 5,4 Sexual Health St Helens, NHS. Let's talk about Anal sex. Patient information booklet
- ↑ NHS. Condoms. Condom use and lubricant compatibility
- ↑ 7,1 7,2 7,3 7,4 Planned Parenthood. Sex Toys. Toy design, materials and care
- ↑ Planned Parenthood. How Do I Prevent Vaginitis? Preventing bacterial transfer
- ↑ CDC. Can I Get or Transmit HIV From...? HIV transmission and sexual activities
- ↑ CDC. Preventing HIV. PrEP, condoms and treatment as prevention
- ↑ CDC. Clinical Guidance for PEP. Post-exposure assessment and timing
- ↑ CDC. Getting Tested for STIs. Testing options
- ↑ CDC. Chlamydial Infections. Testing the exposed anatomical site
- ↑ Planned Parenthood. How effective are abstinence and outercourse? Pregnancy risk when semen reaches the vulva
- ↑ Markland AD, Dunivan GC, Vaughan CP, Rogers RG. Anal Intercourse and Fecal Incontinence: Evidence from the 2009–2010 National Health and Nutrition Examination Survey. American Journal of Gastroenterology, 2016. Study and limitations
- ↑ Healthdirect Australia. Anal injury. Injury advice
- ↑ NHS. Anal pain. When to seek urgent help