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The risk of HIV transmission from a single act of condomless anal sex
Anal sex carries specific injury and infection risks because the anus does not self-lubricate and the rectal mucosa is thin and prone to tearing; practical prevention steps—ample lubricant, slow/relax...
Proper pre-sex preparation that reduces the risk of anal tears and infections centers on lubrication, barrier use, gentle technique and communication, and thoughtful hygiene; combined, these measures ...
Receptive anal exposure carries higher per-act transmission risk for many sexually transmitted infections, including HIV, because the rectal mucosa is biologically more fragile and prone to microtears...
Meeting someone on a hookup app and having them accept internal ejaculation the very first time is neither vanishingly rare nor the modal outcome; surveys of hookup and first-sex behavior show condoms...
Receptive anal intercourse is an established risk factor for anal cancer primarily because it increases exposure of the anal mucosa to oncogenic human papillomavirus (HPV), and multiple epidemiologic ...
Consistent use of oral or injectable PrEP cuts the per-act risk of acquiring HIV from receptive anal sex from roughly 138 infections per 10,000 exposures (about 1.38% per act) to on the order of 1 per...
Per-act estimates used by major public-health bodies place the risk of HIV transmission from a single act of condomless anal sex at roughly 1.38% (138 per 10,000) for the receptive partner and about 0...