Hormone Use among Young People with Gender Incongruence in Norway: A Nationwide Register Study

Gender incongruence diagnoses in Norway have risen since 2015, with the largest increase among adolescents assigned female at birth, alongside increasing hormone and puberty blocker use.

• Why it matters: Rising gender incongruence diagnoses create a need to quantify how often gender-affirming hormone therapy and puberty blockers are used over time in Norway’s youth.
• What they did: Using linked Norwegian national registers (residents in Norway, born 1975–2017; follow-up 2008–2022), the study estimated annual age- and sex-specific incidence of GI diagnoses and prevalence of androgen, estrogen, and puberty blocker prescriptions.
• The result: Prevalence of feminizing and masculinizing hormone therapy increased mainly among adolescents and young adults, while puberty blocker use remained mostly low but increased since 2015, especially among adolescents assigned male at birth.

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