https://www.saxinstitute.org.au/resource/evidence-for-effective-interventions-for-children-and-young-people-with-gender-dysphoria-update
A rapid review/evidence check.
The findings, on a quick read, repeatedly show that there's not enough research, and that the research available is flawed and low quality, but also somehow concludes that hormones and surgery are helpful.
https://www.abc.net.au/news/2024-09-06/gender-affirming-care-still-safe-effective-and-reversible-review/104322428
'The NSW government commissioned the report by the Sax Institute in the wake of a Four Corners report into gender-affirming care and a growing dispute among some clinicians in NSW about what was best for children with gender issues, as a polarising and sometimes toxic debate over the gender "affirmation" model plays out around the world.
...
A Four Corners investigation into Westmead Children's Hospital's troubled gender clinic revealed it had only seen three new patients as of July last year and was struggling to operate in the wake of a string of staff resignations linked to the publication of controversial research endorsed by the hospital hierarchy.
The paper, published in 2021, found there were "high rates of adverse childhood experiences including family conflict, parental mental illness and loss of important figures via separation" among a sample of 79 children who sought help at the hospital's gender service.
Perhaps most controversially, more recent research conducted at the hospital found gender-related distress was "resolved" or "disappeared" for 22 per cent of those who presented at the clinic.'
... they found that "overall, the evidence about gender dysphoria interventions remains weak due to poor study designs, low participant numbers and single-centre recruitment"..