45:16

In this episode of the Aftermath Podcast, host Dr. Dallas Bragg (a former crystal‑meth user and recovery coach) interviews Dr. Stephen Knowles, a psychiatrist and researcher leading the "Chemsex and the Brain" initiative. The conversation begins with an overview of the podcast’s mission to provide outreach and resources for men who have sex with men (MSM) struggling with chemsex (the use of crystal meth, GHB/GBL, mephedrone, or ketamine in sexual contexts). Dr. Knowles defines chemsex, situates it within minority‑stress and queer‑specific historical trauma, and explains why research on its neurobiology is scarce. They discuss the fragmented service landscape (sexual‑health clinics, emergency departments, psychiatry) and the stigma that marginalises chemsex users. The core of the interview focuses on their ongoing neuroimaging study, which uses neuromelanin‑MRI to assess dopamine‑related activity in the ventral tegmental area and nucleus accumbens, hypothesising that chronic chemsex alters this reward pathway, potentially linking to psychosis and cognitive deficits. Recruitment criteria (active chemsex users within the past 3–6 months, plus control participants) and study logistics are outlined. The hosts explore future research directions (reversibility studies, comparative arms, surveys on risk perception, practitioner awareness) and the potential for harm‑reduction guidance and pharmacological interventions once mechanisms are clarified. Throughout, they stress the importance of education, cultural competence in psychiatry, and the hope that biological evidence will reduce stigma and improve treatment for chemsex‑related addiction.

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