Chemsex and its impact on gay and bisexual men who have sex with men: Findings from an online survey in Belgium.

OBJECTIVES: The study aimed to estimate the prevalence of sexualized drug use, or chemsex, in a wide group of gay, bisexual and other men who have sex with men (gbMSM) in Belgium. It examined which drugs gbMSM used before and during sex, the frequency with which they used it, whether they experienced non-consensual sex, and evaluated the impact of chemsex on the health and professional and social lives of respondents. METHODS: We conducted an online survey among Belgian gbMSM. Five specific questions on chemsex were included in the survey. These questions assessed whether gbMSM engaged in chemsex. If they did, they were asked to provide information on which drugs they had used and how often. We asked whether their and their partners' boundaries had been respected and whether and how engaging in chemsex had affected a range of life domains. RESULTS: Of 836 respondents, 258 (30.9%) self-reported having had sex under the influence of substances ("chemsex") in the previous 6 months. Of these, 227 (88%) were considered chemsex users according to the definition used for the analysis. Poppers (73%), gamma-hydroxybutyrate/gamma-butyrolactone (GHB/GBL; 69%) and cathinones (68%) were the most commonly reported substances. Almost half of respondents (45%) engaging in chemsex were high on drugs during at least half of their sexual encounters. Nearly 1 in 10 (9%) reported that boundaries had not been respected, suggesting non-consensual sexual activities. The 82 respondents experiencing negative impacts from their chemsex use reported that mental health (65%), physical health (40%) and sexual health (38%) were most impacted. DISCUSSION: Our findings provide a snapshot of the current chemsex situation in Belgium. The frequency of chemsex is concerning because several health, professional and social aspects are impacted. Almost 1 in 10 respondents using chemsex reported that chemsex impacted consent around sex, requiring additional efforts to eradicate these non-consensual sexual experiences. Therefore, larger scale research focusing on respected boundaries and consent during chemsex and the frequency of drug use for sex seems required. Additionally, sensitisation, as well as care and support programmes are critical.

Do pre-exposure prophylaxis (PrEP) users engaging in chemsex experience their participation as problematic and how can they best be supported? Findings from an online survey in Belgium.

BACKGROUND: Chemsex involves the use of psychoactive drugs in a sexual context and is a growing phenomenon among men who have sex with men (MSM) and pre-exposure prophylaxis (PrEP) users. Investigating how its negative consequences can be avoided is important. The objective of this study was to explore the perceived impact of chemsex, the willingness to reduce chemsex activities and associated risks and preferred interventions to do so among PrEP users. METHODS: We analysed data from an online survey among PrEP users in Belgium. Chemsex was assessed in two questionnaires distributed between September 2020 and January 2022. RESULTS: A total of 326 participants completed the baseline questionnaire, and 186 the follow-up questionnaire. About one in three participants (36.5%, 119/326) reported engaging in chemsex, and half of those (49.6%, 59/119) were willing to reduce chemsex-related risks. The most preferred strategies for reducing risks were online support via an app (37.3%, 22/59) and face-to-face counselling with a health care professional (30.5%, 18/59). Among those reporting recent chemsex in the follow-up questionnaire, about one in five (21.9%, 14/64) wanted to reduce or stop chemsex activities. About 23.4% (15/64) also reported experiencing negative consequences of chemsex on their health, social or professional life. CONCLUSION: Our findings show that one in four PrEP users engaging in chemsex experienced negative consequences of these activities and about one in five was willing to reduce or stop chemsex activities. We recommend embedding comprehensive chemsex support in the PrEP package of care and developing novel tools and interventions in order to reach maximum impact.

Digital chemsex support and care: The potential of just-in-time adaptive interventions.

Chemsex among gay, bisexual and other men who have sex with men (GBMSM) has received increasing attention as a public health concern in recent years. Chemsex can affect a variety of aspects of the lives of GBMSM and contribute to physical, social and emotional health burden. Starting from a continuum perspective of chemsex, rather than a binary view of problematic vs. non-problematic use, we argue that men engaging in chemsex at different points in their chemsex journey may benefit from tailored and personalized support to cope with the various and evolving challenges and concerns that may be related to their chemsex behavior. To date, interactive digital communication technologies are not much used to provide support and care for GBMSM engaging in chemsex, neither for community-based support and care nor by health services. This suggests potential for missed opportunities, as GBMSM are generally avid users of these technologies for social connections and hookups, including in relation to chemsex. Recent research has provided emerging evidence of the potential effects of so-called just in time adaptive interventions (JITAI) to provide effective support and care for a variety of health issues. JITAI hold much promise for the provision of appropriate, tailored support and care for GBMSM at different points in the chemsex journey. Co-designing JITAI with potential users and other stakeholders (co-design) is key to success. At the Institute for Tropical Medicine, in Antwerp (Belgium), we initiated the Chemified project to develop an innovative digital chemsex support and care tool for GBMSM. This project illustrates how current understanding of chemsex as a journey can be integrated with a JITAI approach and make use of co-design principles to advance the available support and care for GBMSM engaging in chemsex.