Young women and teen girls are increasingly participating in three-ways and other “multi-person sex” acts, according to a new study, and L.A.'s porn industry might be partly to blame.

The study associated multi-person sex with, among other factors, “pornography exposure.”

The research, obtained today by the Weekly, was just published in the Journal of Urban Health: Bulletin of the New York Academy of Medicine. It found that …

… 7.3 percent of females ages 14-20 that it surveyed reported having engaged in multi-person sex at least once.

More than half (52 percent) felt “pressured” and 43 percent said they were “threatened or forced.”

Nearly half (45 percent) of the males participating in such sex did not use a condom.

The study is based on a survey of 328 Boston-area females who used community or school clinics. That's a small sample size, and the fact that they used a clinic might have boosted the numbers (compared to the general population). But still, the stats are eye-opening.

The correlation to L.A.'s porn industry was ugly, too. Nearly one in 10 (8.63 percent) of the females who had admitted to multi-person sex said their partners at least “threatened” to reenact porn scenes. According to the study:

Participants who reported that someone had used threats or force to make

them do sexual things that they did not want to do were classified as having been

forced to do sexual things that the perpetrator saw in pornography.

One in five of the females surveyed said they engaged in multi-person sex more than once. And about one-third said they had alcohol or drugs before engaging in such activity.

The research argues that HIV and other STD transmission is a serious risk in multi-person sex and concludes that ” … adolescent sex involving multiple simultaneous partners is an emerging public health concern.”

[@dennisjromero / djromero@laweekly.com / @LAWeeklyNews]

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