A small robotic cat plushie that responds to touch is transforming mental health outcomes for LGBTQ+ teenagers in the United Kingdom. Called Purrble, the interactive device simulates a fast heartbeat and trembling when held, then gradually slows to a soothing purr as users gently pet it—a simple interaction that's proving remarkably powerful for young people struggling with depression and anxiety.
Research published in Nature Medicine reveals that teenagers with self-harm urges who used Purrble alongside a safety plan were five times more likely to report improvement in depressive symptoms compared to those who only received the safety plan. Over the 12-week study involving more than 130 teens, participants also showed nearly two and a half times greater improvement in emotional regulation, measured through weekly questionnaires. The device was nearly twice as effective at reducing anxiety symptoms as well.
The significance of these findings extends far beyond the numbers. LGBTQ+ youth in the U.K. face disproportionate mental health challenges—65.3% report a history of self-harm—yet many avoid seeking traditional care from clinicians due to fear of stigma or dismissal. Purrble offers something radically different: an affirmative form of treatment that arrives discreetly at home for as little as £25 plus shipping, removing the clinical barriers that discourage vulnerable young people from getting help.
The device works by teaching a skill at the heart of emotional wellbeing. When Purrble trembles with distress in a user's hands, that person learns to soothe another being—and in doing so, practices calming themselves. "Emotional regulation is a core way that we use to control emotional distress, whether everyday or in more serious situations," explained Dr. Aubrey Rhodes, a research associate at King's College London and co-author of the study. "By giving patients a direct, accessible form of care, where their identity may otherwise create barriers for more traditional methods, we can provide affirmative treatment."
The research emerged from collaboration between experts at King's College London, Swansea University, and the University of Nottingham, alongside the non-profit Committee for Children and the design studio Sproutel. Professor Ellen Townsend, who leads the wider Digital Youth Project at Nottingham, emphasized the practical implications: "Given the current unmet demand for face-to-face mental health support for young people, it is vital that novel, digital tools like Purrble are rigorously evaluated. This trial highlights the potential for such tools to complement in-person approaches and improve mental health symptoms."
The team is now investigating why the device proved more effective for cisgender LGBTQ+ youth than transgender youth, where effects were more limited—a question that could unlock even greater therapeutic potential. What's clear is that Purrble represents a shift in how mental health care reaches at-risk young people: not through gatekeeping systems that discourage help-seeking, but through accessible tools designed with dignity and affirmation built in. By scaling up alongside traditional therapies, this robotic companion could help meet a critical gap in mental health support for one of the most vulnerable populations.