Read some Piaget please! on X: "One transgender movement?"
The Demographic Fracture: Adult Male Transition and the Child Cohort
Any serious analysis of the gender affirmative movement must reckon with a demographic fact that its proponents rarely address directly. The clinical and political movement that advocates for the affirmation and medical transition of gender distressed children is, at the level of its most prominent adult advocates, predominantly composed of people with a very different profile from the children on whose behalf they speak.
Adult male transition, the cohort that built the foundational institutions, legal frameworks, and cultural visibility of the transgender movement in Western societies over the latter decades of the twentieth century, is a late onset phenomenon. The typical presentation involves a male who has lived for decades as a man, often with a conventional heterosexual history including marriage and fatherhood, and who arrives at gender transition in middle age or beyond. The clinical and autobiographical literature on this cohort, including the work of Ray Blanchard and Anne Lawrence on autogynephilia, describes a pattern of transition rooted in adult male sexuality and psychology, with its own distinct aetiology, trajectory, and set of concerns.
The child cohort presenting to gender clinics in the twenty first century is something categorically different. It consists predominantly, in recent years overwhelmingly, of adolescent females with high rates of co occurring mental health conditions, autism spectrum conditions, trauma histories, and same sex attraction. The sex ratio inversion is one of the most striking and least discussed features of the contemporary clinical picture. At the Tavistock GIDS, referrals shifted from a predominantly male to a seventy four percent female cohort by 2018 to 2019. The children arriving at gender clinics in the contemporary period bear almost no demographic, psychological, or aetiological resemblance to the adult males who built the movement through which they are now being processed.
This demographic fracture matters for several reasons that advocates of the gender affirmative model have been consistently unwilling to examine.
The experiential basis of advocacy is not transferable
Adult male transitioners who report subjective relief following social and medical transition are reporting on an experience that is their own. Whatever the mechanisms underlying that experience, and the literature on outcomes is considerably more ambiguous than popular accounts suggest, it is an experience rooted in adult male psychology, adult sexuality, adult cognitive capacity, and a transition undertaken with the benefit of a fully developed prefrontal cortex. The claim that this experience validates early childhood transition involves an inferential leap that the evidence does not support.
A fifty year old man who transitions and reports improved wellbeing has not provided evidence that a fourteen year old girl with depression, a trauma history, and no prior indication of gender distress before the age of twelve should receive puberty blockers. The two situations share a vocabulary. They do not share an aetiology, a developmental context, or a risk profile. Using the former to justify the latter is not clinical reasoning. It is the substitution of personal testimony for empirical evidence across a demographic chasm.
The political interests of the two cohorts do not align
The adult male transgender movement has historically organised around specific concerns: legal recognition of gender identity, access to sex specific spaces, freedom from discrimination in employment and public life, and the social legitimacy of late onset transition. These are adult concerns. They arise from an adult life situation. They are not trivially wrong as political claims, but they have a specific origin and a specific constituency.
The medicalisation of gender distressed children is a distinct project. It requires a different justification, draws on a different evidence base, and carries a different risk profile. A child receiving puberty blockers at age twelve is not receiving an adult political freedom. They are receiving an irreversible medical intervention at a stage of development when the cognitive prerequisites for evaluating its long term consequences are, as Piaget and Kohlberg establish, not yet present.
The political coalition that advocates for both simultaneously has an interest in presenting them as the same thing. They are not the same thing. The elision serves adult advocacy interests. It does not serve children.
The gatekeeping question exposes the fracture
One of the most revealing sites of tension within the gender affirmative movement concerns the question of gatekeeping, the clinical practice of requiring assessment, differential diagnosis, and a period of psychological evaluation before medical intervention is offered. Adult transitioners have historically objected to gatekeeping on grounds of autonomy. An adult who has considered their decision, lived with it, and is capable of providing informed consent should not, on this argument, be required to obtain clinical permission to proceed with a legal medical intervention affecting their own body.
This argument has force when applied to competent adults making considered decisions about their own lives. It has no application whatsoever to children. Children are not adults. The argument from autonomy does not transfer across the developmental boundary. Gillick competence, the legal and clinical framework governing the capacity of children under sixteen to consent to medical treatment, exists precisely because the law and medicine recognise that adult autonomy cannot simply be projected downward onto developing minds.
The progressive erosion of clinical gatekeeping for children, which occurred in part because of advocacy pressure rooted in the adult autonomy argument, represents the direct transfer of a political position developed in one context to a clinical context where it does not belong. The Cass Review's finding that assessment practices at the Tavistock were inadequate, that comorbidities were insufficiently explored, and that many children were placed on medical pathways without the thorough evaluation their situations required, is in significant part a consequence of this transfer.
The same sex attraction dimension
The relationship between homosexuality and the transgender framework is a further point at which the interests of the two cohorts diverge in ways that have been systematically obscured. A substantial proportion of the children currently presenting to gender clinics are same sex attracted young people whose distress is rooted in the difficulties of developing a gay or lesbian identity in contexts carrying shame, social difficulty, or simple confusion about what their feelings mean.
The historical record is instructive. In a pre affirmation era clinical context, the majority of children presenting with gender distress desisted from that distress without medical intervention, and a substantial proportion of those who desisted went on to identify as gay or lesbian. The affirmation model, applied to these children, does not liberate them from a false identity. It places them on a medical pathway that may foreclose the gay or lesbian identity they would otherwise have developed. The irony is pointed: a movement that emerged in part alongside gay liberation now operates, in its application to children, in ways that risk converting same sex attracted young people into heterosexual transitioners.
Some adult gay and lesbian advocates have noted this with considerable alarm. Their concern is not misplaced. The adult male transgender movement, whose own relationship to homosexuality is complex and contested in the clinical literature, does not have clean hands on this question, and the political pressure to treat any such observation as transphobic has had the effect of suppressing a clinically significant line of inquiry.
The vulnerability asymmetry
Adult male transitioners are, by definition, adults. They have the legal capacity to consent to medical treatment, the cognitive capacity to evaluate risk, the developmental maturity to understand long term consequences, and the life experience to contextualise the decision they are making. Many have indeed considered their decisions over long periods, often decades, before acting.
The children arriving at gender clinics in the contemporary period are, by contrast, among the most psychologically vulnerable young people in the clinical system. They have high rates of mental health conditions, high rates of trauma exposure, and high rates of co occurring developmental conditions including autism spectrum conditions. They are, on Erikson and Marcia's account, in the developmental phase of identity moratorium, the phase in which uncertainty is the expected and appropriate condition and premature foreclosure carries the greatest developmental cost. They are, on Bowlby and Fonagy's account, a population in whom the presentations most likely to be interpreted as evidence of gender incongruence are the characteristic presentations of insecure attachment and mentalisation failure.
Applying a model developed in, and advocated by, an adult population to this vulnerable child population requires a standard of evidential justification that has not been met. The Cass Review, the HHS Systematic Review of 2025, and the Scandinavian clinical reviews that preceded them all reached the same conclusion: the evidence base is weak, the quality of studies is low, comorbidities were inadequately assessed, and long term outcomes are unknown.
A Further Fracture: Transmedicalism and Its Critics
A second schism runs through the adult transgender movement that is equally relevant to the child question. Transmedicalists, sometimes called truscum within online communities, hold that genuine transgender identity requires clinically significant dysphoria, that medical transition is the defining feature of authentic transgender experience, and that identity alone without accompanying distress and the desire for physical intervention does not constitute a transgender identity in any meaningful clinical sense. Anti-transmedicalists reject this entirely, arguing that gender identity is self determined, that dysphoria is neither necessary nor definitive, and that requiring medical criteria for recognition is itself a form of gatekeeping that replicates the oppressive structures the movement exists to dismantle. This internal dispute matters for the child question because the two positions generate radically different clinical implications. A transmedicalist framework, whatever its other limitations, at least preserves a role for clinical assessment and maintains a distinction between identity and diagnosis. The anti-transmedicalist position, extended to children, provides the theoretical basis for social transition without assessment, affirmation without evaluation, and the treatment of any clinical hesitation as political hostility. It is largely the anti-transmedicalist position that has shaped the affirmative model as applied to children, and it is that position which the developmental and evidential literature most directly contradicts.
The institutional capture dynamic
The mechanism by which the adult transgender advocacy movement achieved influence over paediatric clinical practice is not difficult to trace. Advocacy organisations with adult membership and adult concerns became involved in the development of clinical guidelines governing the treatment of children. Professional bodies in which adult transitioners and their advocates had acquired influence endorsed models developed without adequate paediatric evidence. Clinicians who raised concerns about the applicability of adult frameworks to child populations were marginalised. The language developed to describe adult experience was applied wholesale to children, and questioning that application was characterised as a failure of political solidarity rather than a legitimate clinical concern.
The result was a paediatric clinical model shaped in significant part by the interests and experiences of a demographic entirely different from the children it purported to serve.
Conclusion
The gender affirmative model applied to children did not emerge from paediatric developmental research. It emerged from adult advocacy, adult testimony, and adult political organisation, and was then extended downward to a child population that differs from its originators in almost every relevant respect: in sex, in age, in developmental stage, in psychological profile, in aetiology, and in the nature of the risks they face.
The children now being processed through gender affirmative clinical pathways are not young versions of the adult male transitioners who built the institutional infrastructure through which they move. They are a different population, with different needs, different vulnerabilities, and different developmental futures at stake. Treating them as though they were the same population, because the same vocabulary is applied to both, is a category error with serious clinical consequences.
A developmentally grounded, evidentially rigorous paediatric medicine would have recognised this from the beginning. The task now is to ensure that it recognises it going forward.
Suggested Reading
Ray Blanchard's clinical papers on autogynephilia and Anne Lawrence's Men Trapped in Men's Bodies (2013) provide the foundational account of late onset male transition. Michael Bailey's The Man Who Would Be Queen (2003) covers the same ground for a general readership.
The Cass Review (2024), available in full at , remains the essential source on the contemporary child cohort and the demographic shift in paediatric presentations. Littman's 2018 paper in PLOS ONE documents the adolescent female cohort specifically.
For desistance and same sex attracted outcomes, Steensma and colleagues (2013) in the Journal of the American Academy of Child and Adolescent Psychiatry and Singh (2021) are the key studies.
On the limits of the autonomy argument in a paediatric context, the Bell v Tavistock High Court judgment (2020), available through the National Archives, remains essential reading.
