
The Dutch Leaks: There Is No Evidence and There Never Was
The Dutch protocol, the model that shaped youth gender medicine around the world is full of holes, or 'leaky as a basket'. Dutch psychologist and biologist Dr Marieke den Ouden joins Dr Stella O'Malley to discuss "The Dutch Leaks". "The Dutch Leaks" is a document written to display that the evidence base behind the Dutch pediatric gender transition model is full of holes. The Dutch protocol is the approach developed in the Netherlands in the 1990s, combining puberty blockers, cross-sex hormones and later surgery for adolescents with gender dysphoria. 🔗 LINKS & RESOURCES The Dutch Leaks Gender Dysphoria Support Tool Dr Marieke den Ouden Substack Interview with Steensma & de Vries In this episode Stella and Marieke discuss: • early Dutch and Belgian research from the 1980s-1990s • Bram Kuiper's 1991 cohort follow-up, which reported multiple deaths, suicide attempts, high loss to follow-up, unemployment, loneliness, surgical complications and extensive pre-existing psychiatric issues, yet was still labelled "therapeutically effective" • the Utrecht Gender Dysphoria Scale, which Marieke critiques as invalid • De Cuypere's emphasis on family input (heteroanamnesis) and differential diagnosis, which Marieke argues were largely ignored in practice • parent case studies, and informed-consent concerns, especially for autistic young people • alleged institutional capture in the Dutch oversight bodies reviewing transgender healthcare ⏱️ CHAPTERS (00:00) Introduction (01:30) What "The Dutch Leaks" Means (02:54) The Hans Brinker (Leaking Dike) Metaphor (04:29) Early Dutch Research (06:25) Kuiper's 1991 Study: Red Flags (14:04) De Cuypere, Family Input and Differential Diagnosis (21:05) The Utrecht Gender Dysphoria Scale: A Critique (30:24) The Lindeboom Report: Doubts (39:41) Why Parents Are Dismissed (40:57) Autism and Informed Consent Gaps (44:55) The Support Tool (49:42) Alleged Institutional Capture in Dutch Oversight (55:43) FOI Requests and Commission Bias ❓ QUICK ANSWERS Q: What is the Dutch protocol? A: It is the pediatric gender transition model developed in the Netherlands in the 1990s, using puberty blockers, cross-sex hormones and surgery. Marieke argues its evidence base is much weaker than commonly believed. Q: What are "The Dutch Leaks"? A: A document written by a disappointed parent that argues the evidence base behind the Dutch model is full of holes. Marieke and Stella discuss it throughout this episode. Q: What is the Utrecht Gender Dysphoria Scale? A: A questionnaire used in Dutch gender research. Marieke critiques it as invalid. Q: Who is Dr Marieke den Ouden? A: A Dutch psychologist and biologist.


