The clinical evidence on gender-affirming care outcomes is now extensive and consistent. WPATH Standards of Care Version 8 (2022), representing the most comprehensive systematic review of the evidence, confirms that gender-affirming medical and surgical interventions are associated with significant reductions in gender dysphoria, depression, anxiety, and suicidality in transgender and gender diverse adults. Expósito-Campos et al.’s systematic review of 27 studies covering 7,928 patients who underwent gender-affirming surgery found a mean surgical regret rate of approximately 1% across all studies, with contemporary cohorts showing rates at or below the lower end of the 1–4% range as patient selection and surgical techniques have improved. Regret rates for hormonal treatment alone are lower than for surgery. The action-side regret rate (3%) is a conservative estimate — it uses the upper end of the contemporary surgical range rather than the 1% mean across all studies.
The inaction-side picture is documented in large population surveys of transgender adults. The US Transgender Survey 2022 — with over 90,000 respondents — found that 82% of those who received gender-affirming medical care reported it improved their quality of life. Among respondents who wanted care but had not received it, 40% described the lack of treatment as a significant ongoing source of distress and regret. Turban et al.’s 2020 JAMA Psychiatry study of 20,619 transgender adults found that those who wanted gender-affirming care but were unable to access it showed approximately three times the odds of severe depressive symptoms compared with those who received their desired care. The gap between action-side regret (3%) and inaction-side regret (40%) is among the largest in this corpus — driven by the very low surgical-regret rate on one side and the high psychological burden of treatment absence on the other.
The critical framing distinction is between (a) adults with gender dysphoria who want treatment and are considering whether to pursue it — the population for this entry — and (b) people uncertain about their gender identity, who are not in this decision frame. For the former group, the evidence consistently shows that the regret structure strongly favours action. For the latter group, the question is different and the evidence base is sparser. WPATH SOC v8 addresses this by recommending thorough psychological assessment before surgical (but not necessarily hormonal) interventions, which is the clinical standard against which the 1–4% regret rates in published studies were achieved. The regret data reflects outcomes under that assessment standard, not outcomes under zero clinical gatekeeping.