Digital peer messages boost HIV prevention and mental health in young Brazilian LGBTQ+ men

Young men and non-binary people who have sex with men in Latin America carry a disproportionate weight of HIV infection, yet programs designed to reach them remain thin on the ground. A 48-week study conducted in Brazil set out to test whether a combination of tailored digital outreach and specialized health services could shift that equation for people aged 18 to 24.

The program, called Conectad@s, enrolled 409 young LGBTQ+ participants and kept 83.4% of them engaged through the full year. The intervention had two parts: differentiated service delivery—a model that streamlines HIV care by removing unnecessary clinic visits and bureaucratic friction—paired with weekly text messages written and sent by peer counselors. The researchers tracked health outcomes across two distinct periods: the first 24 weeks when participants received both the streamlined services and the weekly messages, and the second 24 weeks when the messages stopped but the service model remained.

During the first half of the study, when the text messages were active, the data showed measurable movement across multiple fronts. Participants were 14 percent more likely to be taking antiretroviral therapy, the medication that suppresses HIV to undetectable levels. They were 17 percent more likely to be using oral PrEP, the preventive drug that stops infection before it starts. They reported better overall health. At the same time, binge drinking declined, depressive symptoms eased, and anxiety decreased. These were not dramatic swings—the statistical shifts were modest—but they were consistent and they moved in the direction the intervention was designed to push.

When the messages stopped in week 25, something interesting happened. The gains in medication use and mental health did not simply evaporate. Instead, the researchers observed a continued decline in moderate to high problematic substance use through the second half of the year. The implication is that the intervention had planted something that took root, that the combination of peer support and accessible services had created a momentum that persisted even after the weekly digital contact ended.

The participants themselves were emphatic about the value of what they had received. Nearly all of them—99.4 percent—said they would recommend the text message program to others seeking HIV prevention or treatment support. More than nine in ten found the weekly cadence of messages to be the right frequency, neither too much nor too little.

What makes this study noteworthy is not that it discovered a miracle cure, but that it identified a practical, scalable approach to a stubborn problem. Young LGBTQ+ men in Brazil and across Latin America have been historically difficult to reach through conventional health systems. They face stigma, navigate complex social circumstances, and often distrust institutions. A program that meets them where they already are—on their phones, through voices they recognize as peers—and that simplifies the machinery of HIV care appears to work. The researchers frame their findings as evidence that LGBTQ+-affirming digital strategies, woven into streamlined service models, can close gaps that have persisted for years. Whether that promise can be realized at scale, and whether similar approaches will work in other settings and populations, remains to be tested.