This article originally appeared in POZ.

Men who have sex with men (MSM) who have more sexual partners are more likely to use a variety of sexual risk reduction practices such as asking a partner about his HIV status before sex or preferring certain sexual positions over others. While having more sexual partners increases the risk of transmission of HIV, engaging in other risk reduction strategies, even those outside of the use of condoms, may otherwise reduce overall risk.

Those with more partners were also more likely to take illegal drugs, including ecstasy and crystal meth, and to exchange sex for money. Drug use can raise the risk of HIV transmission. HIV transmission risk is high among those trading sex for money.

Publishing their findings in AIDS Behavior, researchers from the Momentum Health Study, a prospective biobehavioral cohort study, recruited 719 MSM from Vancouver between February 2012 and February 2014.

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