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Cass Review: Affirmation treats the symptom, not the cause
One of the most damning findings of the Cass Review : the vast majority of children presenting to gender clinics have severe psychiatric comorbidity. Autism, ADHD, depression, eating disorders, trauma — structurally overrepresented. Yet this comorbidity was rarely treated before medical intervention. The gender-affirmative model treats the symptom, not the cause — and thus inflicts lasting physical damage on children whose actual problem has never been seriously questioned.
The figures
The following picture emerges from the GIDS data and international data:
- Up to 35 percent have autistic traits — a 3- to 6-fold overrepresentation compared to the general population.
- High prevalence of ADHD, eating disorders, depression, and anxiety disorders.
- Often a history of trauma, sexual abuse, and adverse childhood experiences.
- High percentage simultaneously homosexual or bisexual — 60 to 80 percent in adolescent cohort.
Diagnostic overshadowing — the fundamental medical error
The report states that clinics employ "diagnostic overshadowing": as soon as a child presents as trans, other problems are ignored or reinterpreted as a result of untreated dysphoria. Causality is reversed. Haven't you eaten anymore? It's because of your dysphoria. Are you depressed? It's because of your dysphoria. Do you have ASD traits? It's because of your dysphoria. That is not medicine — that is circular reasoning that covers up any other diagnosis. Psychological comorbidity ought to be treated first; only then can the question of identity be seriously addressed.
Autistic girls: an identifiable group of victims
Autistic girls constitute a remarkably large subgroup among adolescent referrers. Literal thinking, identity confusion, sensory issues with their own puberty, social exclusion, and intense online involvement create a profile that is easily reinterpreted as "born in the wrong body." Affirmative clinicians often treat this as if it were simply trans identity — a clinical malpractice with lasting physical consequences, described in Littman's ROGD study . Mastectomies in healthy, autistic girls are not a concern; they are a scandal.
What shifts the picture: detransitioners and desistance
Research by Littman and testimonies from detransitioners show that, upon closer examination, many young people had autism spectrum disorder, eating disorders, trauma, or internalized homonegativism as their core problem — not gender dysphoria. The desistance study confirms that the majority of children with dysphoria lose it if puberty proceeds normally, often as ordinary gay or lesbian adults. The affirmative model removes that possibility by initiating blockers and hormones.
What the international evidence bodies say
The Cass findings regarding comorbidity overlap with SBU (Sweden) , COHERE (Finland) , Ukom (Norway) , and the Danish guideline . Four Scandinavian countries plus the UK all prescribe that psychiatric comorbidity must be treated first. Only the Netherlands—the birthplace of the Dutch Protocol—adheres to a model where this does not happen.
According to the Cass Review, this is structurally lacking in gender clinics. The affirmative route comes first — other care must give way to it. This is not an isolated error, but a structural characteristic of the model.
Up to 35 percent in British data — versus 1 to 2 percent in the general population. That is no coincidence; that is a diagnostic signal that is systematically ignored.
Sources
- Cass, H. (2024). Final Report . cass.independent-review.uk
- Strang, J. et al. (2018). Gender Diversity in Autism Spectrum Disorder.
- Kaltiala-Heino, R. et al. (2015). Two years of gender identity service for minors. Child & Adolescent Psychiatry & Mental Health .