Society for Evidence-Based Gender Medicine

Young people with gender dysphoria deserve respect, compassion, and high-quality, evidence-based care. The first and most fundamental principle of evidence-based medicine (EBM) is that medical decision-making must be based on the best available evidence, which comes from systematic reviews of evidence. Once quality systematic reviews of evidence specify what is known about the benefits and harms of a given treatment, understanding how the patients themselves weigh the benefits against harms should inform treatment decisions. SEGM was formed in response to a proliferation of treatment guidelines that promote medicalized youth gender transition without the benefit of systematic reviews of evidence. Instead, the prevailing guidelines rely on a limited selection of studies that suffer from a high risk of bias, and have low applicability to the current population of gender-dysphoric youth. Such non-evidence-based guidelines risk promoting suboptimal and harmful care. SEGM is a registered 501(c)(3) nonprofit organization. Contributions to SEGM are tax-deductible to the extent permitted by law. SEGM’s tax identification number is 84-4520593. Roberto D’Angelo , PsyD, MMed, MBBS, FRANZCP. President and founding board member (Australia). Dr. Anna Hutchinson is a clinical psychologist with 25 years of frontline experience, specialising in adolescent mental health and physical health. She serves as the Clinical Director at the Integrated Psychology Clinic in London. From 2013 to 2017, Anna worked at the Gender Identity Development Service (GIDS) at The Tavistock Clinic, where she observed significant changes in patient demographics, referral numbers, and an evolving evidence base that challenged practice at the time. Since leaving GIDS, Anna has been working to raise awareness of the complex needs faced by young people experiencing gender-related distress. She continues to educate and write on the subject, co-leading the induction training for the new NHS Children and Young People Gender Hubs in collaboration with the Academy of Medical Royal Colleges in the UK. She is currently co-authoring a book on developmentally-informed psychotherapy for gender-related distress in children. Dr. Karla Solheim is a board-certified obstetrician/gynecologist. She graduated from Bryn Mawr College and earned a Master’s degree in City Planning at M.I.T. before attending medical school at the University of California-San Francisco. After completing her Ob/Gyn residency at the University of Iowa, she has continued to practice in the state. She has been dedicated to women’s health advocacy her entire career and served in several statewide roles before becoming the Chair of the Iowa Section of the American College of Obstetricians and Gynecologists (ACOG) from September 2024 through March 2026. She has written extensively about women’s health as well as the evidentiary basis for gender medicine. Anastassis Spiliadis is a psychotherapist (MSc, PGCert), a psychologist (MSc, Doctoral C.) and an organisational consultant (MSc) based in London & Athens. He works with individuals, couples, families, and teams, and has held senior clinical and training roles in leading UK institutions, including the Maudsley Hospital and Great Ormond Street Hospital. From 2015 to 2019, he served as a psychotherapist, supervisor, and trainer at the Tavistock GIDS, where he founded the first Family Therapy & Consultation Service and raised concerns about clinical practices. He introduced the concept of Gender Exploratory Therapy in 2018 and continues to work clinically, publish, and train on gender-related distress and co-occurring difficulties through a systemic and developmental lens. The views, thoughts, and opinions expressed by SEGM advisors are their own and do not necessarily represent the views of their respective employers or institutions they are affiliated with.