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Non-binary
"Non-binary" presents itself as an escape from the male-female schema, but introduces a new binary: binary versus non-binary. Moreover, it is the fastest-growing identity claim, especially among adolescent girls. A profession of faith with TikTok as the pulpit and mastectomy as the sacrament. Anyone who criticizes is silenced and dismissed as a hater.
Definition according to proponents
An identity "that is not exclusively male or female". The definition is open: anything in between, both, neither, variable, or something else. Functionally a residual category without its own criterion — whoever claims to belong, belongs.
Origins: queer theory and social media
Related terms circulated in queer theory from the 1990s (see genderqueer and Judith Butler ). Current popularity dates from after 2015 and is linked to social media use, particularly on Tumblr and TikTok. See spread since 2010. Population studies show strong age and gender dependence: peak among girls aged 13–19 — a pattern consistent with Littman/ROGD .
Criticism: denial is not identity
"Non-binary" is logically a negation, not an identification. Someone who says they are neither a man nor a woman is saying something about what they are not — not about what they are. There is no marker that tests the claim; only self-reporting . A textbook example of circular reasoning and unfalsifiability .
Empirically, non-binary claims are rare among adult men and very common among adolescent girls—a pattern consistent with social identity formation rather than biological or early childhood "inner knowledge." The label also serves as a safer entry point to transition without the heavier trans man/trans woman claim—first non-binary, then hormones, then mastectomy. Kathleen Stock (2021) and Helen Joyce (2021) point out that such an elastic definition erodes the entire construct: if everything counts, it describes nothing. Levine (2022) warns that informed consent for irreversible procedures is clinically problematic given such a fluctuating criterion.
The Cass Review (2024) confirms this empirically and demographically: an explosive growth of adolescent girls among non-binary / transmasculine individuals without a history of childhood dysphoria, often with comorbid autism or depression. Affirmative pathways based on such a recently self-chosen label are at odds with evidence-based care.
Damage: hormones and mastectomy for adolescent girls
Non-binary self-identification increasingly leads to puberty blockers, testosterone, or mastectomy — irreversible damage based on a residual category. The Cass Review (2024), SBU (2022), and the Finnish guideline (2020) recommend great caution, especially in minors and in cases of comorbidity. Transition does not cure — see detransition research and regret research .
Related identities
Genderqueer — historical predecessor.
Genderfluid — variant with time dimension.
Agendar — more radical denial.
Transmasculine — related umbrella.
Frequently Asked Questions
Estimates vary from <0.5% among adults to >7% among students. The dispersion points to a social and cohort effect, not a fixed population. See distribution 2010 .
No. Sex is a biological category with two gamete types. "Non-binary" is a self-chosen identity claim separate from sex biology. See chromosomes and gametes and biological sex .
In the Netherlands, since 2018, the passport has included the "X" option via a court ruling. Legal recognition does not imply biological reality.
Social identity formation, peer effects, and social media exposure — the ROGD pattern described by Littman (2018).
Sources
- Aitken, M. et al. (2015). Evidence for an altered sex ratio in clinic-referred adolescents with gender dysphoria. Journal of Sexual Medicine .
- Cass, H. (2024). Final Report . cass.independent-review.uk .
- Littman, L. (2018). Rapid-onset gender dysphoria. PLOS ONE , 13(8).
- Stock, K. (2021). Material Girls . Fleet.
- Joyce, H. (2021). Trans: When Ideology Meets Reality . Oneworld.