Home » Resource Hub » Research » Engage Study Engage Study Conference Year 2017 Intended Audience Government Non-governmental Organizations Priority Populations Gay, bisexual men and other men who have sex with men The Momentum Health Study is a sexual health study of gay, bisexual and other men who have sex with men in Greater Vancouver. Momentum aims to report new estimates of HIV prevalence among men who have sex with men in the region. Open Source: Momentum