Jonni Skinner
Detransitioner and paediatric gender medicine campaigner
Jonni Skinner was placed on cross-sex hormones at thirteen by a US gender clinic, following what he describes as a fabricated diagnosis. By fourteen, higher doses were being used to restrict his growth while his mother faced custody threats for objecting. Now a detransitioner with lasting physical damage, his story carries direct lessons for Britain's NHS reforms and child safeguarding.
Jonni Skinner was thirteen years old when a gender clinic in the United States placed him on cross-sex hormones — a decision he says followed a fabricated diagnosis designed to justify medical intervention. Within a year, at fourteen, he was receiving higher doses intended to suppress his growth. When his mother expressed doubts, she was threatened with the removal of custody unless she consented to his continued treatment. That combination of diagnostic manipulation and coercive pressure on a dissenting parent makes his case one of the most stark accounts to emerge from the American paediatric gender medicine system.
Eight years on, Jonni is a detransitioner carrying permanent physical damage from the treatment he received as a child. In I Was Thirteen When They Put Me on Estrogen (episode 39), he joins hosts Stella O'Malley, Mia Hughes, and Dr Bret Alderman to recount his experience in full — the clinical encounters, the pressure placed on his family, and the long aftermath of irreversible medical changes made before he was old enough to grasp their consequences.
For British listeners, his testimony arrives at a pivotal moment. The Cass Review concluded that the evidence base for paediatric gender medicine was dangerously weak, and NHS England has since closed the Tavistock GIDS in favour of a new regional model with stricter clinical thresholds. The mechanisms Jonni describes — rushed assessments, threats to families who resist, and an institutional culture that treats parental dissent as neglect — are precisely the failure modes that Hilary Cass warned the NHS to guard against in any successor service.
His account is also a direct argument for robust legal safeguards within UK child protection law. When a parent's custodial rights are weaponised to enforce compliance with a contested medical pathway, the question of who holds ultimate responsibility for a child's welfare becomes urgent and unresolved. Jonni Skinner's story does not make that question comfortable to sit with — which is exactly why it matters.
