Sexually Explicit Online Media Use and Sexual Behavior among Sexual Minority Men in Portugal.

: This study aimed to describe sexually explicit online media (SEOM) use among men who have sex with men (MSM) in Portugal and to examine any associations between exposure to SEOM depicting unprotected anal intercourse and engaging in unprotected anal sex. : This study recruited 1577 MSM living in Portugal with Internet access, who ranged in age from 18 to 74 years old ( = 35.69, = 11.16). Participants were recruited via websites, e-mail and social media. 67.3% (n = 1061) of sample participants self-identified as gay, and 32.7% (n = 516) claimed to be bisexual. The survey included four categories of questions/measurements, encompassing demographic information, SEOM use, explicit imagery of protected/unprotected anal sex and sexual behavior. : The study results suggest that Portuguese MSM frequently use SEOM and that they possess a stated preference for SEOM displaying unprotected anal sex. Furthermore, this study's findings indicate that self-identified gay men more frequently engage in unprotected sex than self-identified bisexual men. Finally, the study revealed that a preference for viewing SEOM displaying unprotected sex and higher levels of arousal attributed to direct SEOM exposure are significant predictors of having receptive anal sex without condoms.