Gender diversity and trans autistic people

Gender-diverse identities are more common among autistic people than in the general population. In two samples of autistic US adults from SPARK, the Simons Foundation autism database, 16.1% of 205 people and 19.8% of 243 people were gender diverse, against 0.5% to 4.5% reported in general adult populations.¹ The two samples come from the same database and the same research group, so they count as one study rather than two.

Across five separately recruited datasets totaling 641,860 people, transgender and gender-diverse people had higher rates of autism diagnosis, on average, than cisgender people, and scored higher on self-report measures of autistic traits.² The datasets were analyzed in a single paper and the design was cross-sectional.

A whole-population study in New Zealand linked Census 2023 records for 1,266,453 people aged 5 to 24. Autism was identified in 3.9% of young people whose gender was outside the male/female binary (1.7 times the rate in males and 5.8 times the rate in females), in 4.0% of transgender people (2.9 times the rate in cisgender people), and in 2.2% of non-heterosexual people (1.8 times the rate in heterosexual people), against 1.5% of the cohort overall.³

A meta-analysis pooled the gender-dysphoria literature and put the prevalence of an autism diagnosis among gender-dysphoric or gender-incongruent people at 11%, with a significant difference in autistic traits between those people and comparison groups (an effect size of 0.67). Heterogeneity was high, and the authors wrote that the size of the link needs further investigation.⁴

The size varies between samples. In a Dutch clinical sample of autistic people, 6.5% of 573 adolescents and 11.4% of 807 adults endorsed a single questionnaire item about wishing to be of the opposite sex, against 3% to 5% in norm samples.⁵ An older chart review found parent-reported gender variance in 5.4% of children with autism, against 0 to 0.7% in non-referred comparison groups, making them 7.59 times more likely to show it.⁶ A systematic review of how gender dysphoria has been measured in autistic samples found that studies consistently reported more and more severe gender-dysphoria characteristics in autistic than in non-autistic people, and that the methods used were often weak: recruitment from clinics, samples with more males, and single-item measures in children.⁷

Autistic people are also overrepresented among those referred for gender-related care. At a national referral clinic in Israel, 786 gender-diverse children and adolescents were seen between 2013 and 2025, and 9.7% had autism documented in their records; referrals of autistic patients rose over the period. Autistic patients were more often nonbinary and intellectually gifted, and autistic adolescents assigned female at birth were significantly less likely to start puberty suppression or gender-affirming hormones than non-autistic peers.⁸

At the largest publicly funded adult gender service in Canada, a gender identity clinic in Toronto, about 6.3% of 1,843 adults referred between 2020 and 2025 had a recorded autism diagnosis. The autistic and non-autistic groups did not differ in average age or in sex assigned at birth, and autistic adults had higher rates of gender dysphoria and of every category of mental-health and neurodevelopmental diagnosis examined.⁹

That study drew a published letter. Dinu, Kulatunga-Moruzi and Joffe argued that it relied on autism diagnoses already written in medical charts rather than confirmed by structured assessment, so some autistic people may have been missed and others may have been more likely to have autism recorded because of complex mental-health histories. They also noted the large number of statistical comparisons and said the findings should be read with caution. They did not argue against care.¹⁰ The authors replied that the limitations do not change the study's main conclusions and that it described needs without recommending particular care approaches.¹¹

A third cohort, of 83 adolescents referred to Norway's national gender team in 2020, found that 9.6% had a registered autism diagnosis, all of them assigned female at birth, and that 25% scored in the clinical range on a parent-completed autism screener.¹²

Gender-diverse autistic people report more mental-health difficulties than other autistic people, and more than non-autistic people. In 9,027 autistic adolescents from SPARK, the 36 identified as transgender or gender diverse had about four times the odds of a depression diagnosis in an adjusted model (odds ratio 4.01), and depression was the only diagnosis that remained associated after correction for multiple comparisons; the effect was at least as strong as having a family history of depression.¹³ In the two SPARK adult samples, gender-diverse autistic adults were up to six times more likely to report a diagnosed anxiety or mood disorder than other autistic adults.¹

In a survey of 174 transgender or gender-diverse autistic adults and 1,295 cisgender non-autistic adults, the gender-diverse autistic group was 2.3 times more likely to report a physical health condition, 10.9 times more likely to report a mental-health condition, and 5.8 times more likely to report self-harm.¹⁴ The comparison group differed in both autism and gender, the study had no transgender non-autistic group, and the sample was a convenience sample that was mostly white, UK-based and assigned female at birth, so these figures describe that group rather than all gender-diverse autistic adults. In the health records of 4,159 autistic adults in a large US health system, both the sexually diverse and the gender-diverse groups had greater odds of mental-health diagnoses than autistic adults who were neither, and both had greater odds of some physical conditions such as pain, migraine and gastrointestinal disorders.¹⁵

In a survey of 308 gender-minority adults, higher autistic traits and higher gender-minority stress each went with poorer mental health, and autistic traits still accounted for suicidality after gender-minority stress was taken into account.¹⁶

In interviews, trans autistic people describe not being believed. Kai Jacobsen interviewed 12 trans autistic people in Ontario who had recently accessed gender-affirming medical care. Participants reported being frequently not believed, listened to or taken seriously by providers, which Jacobsen calls epistemic injustice. They described pressure to present a narrative that fit both trans and non-autistic expectations, and providers misreading autistic communication and discounting what they knew. Some also described positive experiences when providers took their knowledge and lived experience seriously.¹⁷

An earlier study interviewed 22 autistic gender-diverse adolescents and found vivid accounts of gender dysphoria, gender nonconformity before puberty, and fear of expressing gender openly because of perceived hostility toward trans people. Over about 22 months, social gender affirmation increased in six of them.¹⁸

In interviews with 13 trans and gender-diverse autistic adults aged 20 to 50, participants described healthcare gatekeeping and workplace exclusion, and some found belonging in autistic or queer community spaces while others found those spaces inaccessible or difficult for sensory reasons.¹⁹

Broader surveys point the same way. In the survey of 174 gender-diverse autistic adults, this group reported poorer healthcare experiences than cisgender non-autistic adults on 50 of 51 items. The same pattern held for cisgender autistic adults, so the gap tracks autistic status; the study did not include a transgender non-autistic group, so it cannot show what gender diversity adds to it.¹⁴

What is not disputed. Surveys and population cohorts in several countries find that gender-diverse identities are more common among autistic people than in the general population.^1,2,3,4

What the studies show. Clinic records show autistic people referred for gender-related care at higher rates than their share of the population. In Israel, 9.7% of 786 gender-diverse children and adolescents had documented autism, and autistic adolescents assigned female at birth were less likely to start puberty suppression or hormones than non-autistic peers.⁸ In Toronto, about 6.3% of 1,843 adults referred to an adult gender clinic had a recorded autism diagnosis.⁹ In Norway, 9.6% of 83 referred adolescents had a registered autism diagnosis.¹² Each of these counts autism from records rather than from a fresh assessment.

Barriers to hormone therapy come from one clinic: a survey of 112 adults (35 with a formal autism diagnosis, 46 who identified as autistic and 31 who were not autistic) and six interviews at an Australian gender endocrinology clinic (Miller and colleagues, 2026), which the authors treat as preliminary. Autistic participants reported more difficulty taking gender-affirming hormone therapy as prescribed, which the authors linked to sensory processing differences and difficulty with executive function. Strategies included a consistent routine, building the medication into personal-care routines, involving others in appointments, and peer support.²⁰ Experiences of not being believed come from interviews with 12 trans autistic people in Ontario who had recently accessed gender-affirming medical care (Jacobsen, 2026). Participants frequently described not being believed, listened to or taken seriously by providers; some also described providers who took their knowledge seriously. There was no comparison group, so the interviews show what participants described, not how often it happens or whether it is more common than for other patients.¹⁷

No controlled outcome study of gender-affirming medical care in autistic people was found as of October 2026. One small observational study (Baczewski and colleagues, 2025). It followed 27 autistic transgender young people for about four years; among those who wanted gender-related care, earlier receipt of it was associated with a significant fall in anxiety over time, and was not significantly related to changes in depression. Twenty-four of the 26 who stayed in the study remained gender diverse. The study had no comparison group and was not designed to test the care itself.²¹ A separate survey (MacKinnon and colleagues, 2024) was not a study of autistic people, and its abstract reports no results for autistic participants. It surveyed sexual and gender minority people aged 15 to 29 in Canada and the United States, and 720 transgender and gender-diverse respondents had started gender-affirming medical treatment whether they had ever stopped it: 121 (16.8%) had, most often for health reasons, a change in gender identity, or cost. Of those who stopped, 45 (37.2%) said they wished they had not stopped, and 97 (80.2%) still identified as transgender or gender diverse. The 720 were drawn from an online sample of 3,937 that was nonprobabilistic, mostly nonbinary and mostly assigned female at birth.²²

Who holds which view. The Toronto study is the clearest example of the disagreement. Dinu, Kulatunga-Moruzi and Joffe argued in a published letter in 2026 that its reliance on chart-recorded autism diagnoses and its many comparisons mean its findings should be read with caution, and that its most important finding may be the mental-health burden rather than the difference in gender dysphoria; they did not argue against care.¹⁰ The study's authors (Pascoe and colleagues, 2026) replied that the limitations do not change their main conclusions.¹¹ Beyond that study, clinicians disagree about gender-affirming care in general. The Cass Review, whose final report was published in April 2024, made recommendations to the UK's National Health Service on services for minors with gender-related distress, including cautious use of hormonal interventions and the use of research protocols.²⁶ Moser (2025) argues that its recommendations are not supported by research and may endanger the health of gender dysphoric children and adolescents.²⁷ McDeavitt, Cohn and Levine (2025) reviewed four critiques and argue that they contain incorrect or uncontextualised claims.²⁶ Both papers concern gender-related care for young people (Moser also discusses adults); neither abstract mentions autism, and neither is a source on what the review says about autism or neurodiversity. Among clinical guidance for this intersection, a scoping review found that of 31 documents, 11 mentioned the autism-and-gender intersection, and a key recommendation across them was that autism is not in itself a reason to withhold gender-related care.²³ One clinic's prospective study reported that autistic-trait scores fell after a year of hormone therapy in 62 transgender adults and suggested the traits may reflect gender dysphoria rather than autism; the participants were transgender clinic attendees, not an autistic sample, and there was no comparison group.²⁴

What would settle it. A controlled study of gender-affirming medical care in autistic people, with a comparison group and mental-health outcomes, is what is missing. So is a cohort in which autism is confirmed by assessment rather than taken from a chart, and care experiences reported by autistic people themselves. One scoping review called for research priorities to be set with autistic trans and gender-diverse people and noted that studies had generally left out autistic people with intellectual disability; another called for developmental, lifespan and strengths-based research on care experiences and outcomes.^25,23

Several explanations have been proposed for why gender diversity is more common among autistic people. A systematic review of the literature up to 2020 found 36 studies offering 15 distinct theories, and concluded that all of them lacked substantial empirical support.²⁸ The two the review judged most promising were resistance to social norms and weakened sex differences.²⁸

One proposal is that autistic people are less bound by social conditioning, so are more likely to question and explore gender. Walsh and colleagues propose a role for what they call autistic resistance to social conditioning.²⁹ Some autistic writers make a similar point from experience (see the community section below).

A second kind of explanation is that the overlap is at least partly an artifact of who gets referred and assessed. In referred gender-clinic samples, autism is often recorded from a chart rather than confirmed by structured assessment, which can both miss autistic people and over-document autism in those with complex mental-health histories.¹⁰

A biological explanation is sometimes suggested. One study tested 16 polygenic scores, including a score for autism, against measures of gender diversity in two SPARK samples (639 adults in the first and 5,165 people in the second). After correction for multiple comparisons, gender diversity was not significantly associated with the autism score or with any other psychiatric score; the association that did appear was with a score for cognitive performance. The authors noted that their samples were large enough to detect only strong effects.³⁰ The suggestion that prenatal testosterone explains both, which appears in some popular writing, is not supported by any study found as of October 2026.

Whether the overlap between autism and gender diversity is a real difference in how many people are gender diverse, or partly a difference in who is counted, is not settled. Three kinds of study would help.

A population-based cohort that measures gender identity and autistic traits in the same people, with autism confirmed by assessment rather than taken from records, would show how much of the overlap is real and how much is referral and documentation. Following the same people over time, in both directions, would show whether autistic traits or gender identity tends to come first.

A controlled outcome study of gender-affirming medical care in autistic people, with a comparison group, would answer the question the current evidence cannot (see above).

Research priorities set with autistic trans and gender-diverse people, including those with intellectual disability, would direct the studies that are needed. One scoping review called for exactly this and found that although 99 studies were published on the intersection after August 2018, methodological improvements are still needed.²⁵

Many autistic writers describe gender and autism as linked. Nick Walker, an autistic scholar, coined the word neuroqueer in 2008 for the practice of queering neuronormativity and heteronormativity at the same time; it can be used as a verb, and its adjective form can also serve as a label of social identity.^c1 In community writing the overlap between autism and gender diversity is often treated as a shared fact rather than a puzzle. Amythest Schaber writes: "There is an undeniable link between being autistic and being transgender. It is not yet understood."^c2 Mallory Cruz suggests one reason: "if you have a spectrum disorder, where you're not concerned with social norms, you probably won't care about the gender norms pushed on everyone, so it's easier to explore your gender."^c3

A word the community uses for the link is autigender. Devon Price writes that autigender names autistic trans people who "see their neurotype and gender identity as inextricably linked".^c4 The clinicians Donna Henderson, Sarah Wayland and Jamell White describe autigender as a gender experience so shaped by being autistic that "the very definition of gender" cannot be unlinked from the person's way of thinking, and note that it is not yet described in the research.^c5 Megan Anna Neff writes that autistic people identify as genderqueer at much higher rates than allistic people, and offers neuroqueer for people who are neurodivergent and queer.^c6

Eric Garcia reports autistic women and nonbinary people describing the pressure of gender roles. One of them, Kris Harrison, said that when she missed a social cue it was "like I'm falling down on the job of being [an] emotional caregiver" that society expects of most women, and that things were "fine if a boy did and said them" but not for her.^c7