Short-term outcomes of pubertal suppression in a selected cohort of 12 to 15 year old young people with persistent gender dysphoria in the UK (2021)

Peer-Reviewed Study · Carmichael P, Butler G, Masic U, et al. · February 2, 2021

The UK Early Intervention Study (GIDS/UCLH, n=44): no significant psychological-function change on blockers; bone-density z-scores fell; 98% proceeded to cross-sex hormones. CONTRADICTS the book's claim that the study was 'halted in 2020' – it was published 2 February 2021 (after BBC reporting of a nine-year publication delay in December 2020).

We identified no changes in psychological function … 43 of 44 (98%) elected to proceed to cross-sex hormones

Official source

The UK Early Intervention Study (GIDS/UCLH, n=44): no significant psychological-function change on blockers; bone-density z-scores fell; 98% proceeded to cross-sex hormones. CONTRADICTS the book's claim that the study was 'halted in 2020' – it was published 2 February 2021 (after BBC reporting of a nine-year publication delay in December 2020). Prospective cohort, n=44, no control group.

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