Summary
Using Taiwan's national health insurance records, researchers followed about 3,900 people diagnosed with gender identity disorder by psychiatrists. They compared their deaths with matched members of the public and with their own non-trans brothers and sisters. Over about nine years, trans people had a 40% higher death rate than the public and about four times the suicide rate. Deaths from accidents and illness were not higher. Compared with siblings, who share family background and genes, overall deaths were no higher, but suicide was still about 2.6 times higher. Depression, anxiety and other mental illnesses were several times more common in the trans group, and taking depression into account shrank the suicide link the most. The study is careful and the sibling comparison is a strength. But it rests on just 35 suicides and has no data on hormones or surgery.
Key findings
- Tyrime apie 9,5 metų vidutiniškai stebėta 3 906 žmonės, kuriems psichiatras bent du kartus diagnozavo lytinės tapatybės sutrikimą (vidutinis amžius apie 25 metai; 71 % teisiškai vyrai), ir 15 624 suderinti žmonės.
- Psichikos ligos trans grupėje buvo daug dažnesnės: depresija 41 % palyginti su 6 %, nerimas 29 % palyginti su 6 %, bipolinis sutrikimas 7 % palyginti su 1 % ir psichozė 7 % palyginti su 1 %.
- Palyginti su visuomene, trans žmonės turėjo 40 % didesnę tikimybę mirti nuo bet kokios priežasties, maždaug dvigubai didesnę tikimybę mirti nuo išorinių priežasčių, tokių kaip savižudybė ar nelaimingi atsitikimai, ir maždaug 4 kartus didesnę tikimybę mirti nuo savižudybės (35 mirtys palyginti su 31 keturis kartus didesnėje grupėje).
- Mirčių nuo nelaimingų atsitikimų ir ligų nebuvo daugiau nei palyginamojoje grupėje.
- Palyginti su 4 765 ne trans broliais ir seserimis, bendras mirtingumas ir mirtys nuo išorinių priežasčių nebuvo didesni, bet savižudybių vis tiek buvo maždaug 2,6 karto daugiau.
- Papildoma savižudybių rizika buvo didžiausia žmonėms, kurių teisinė lytis buvo moteris (maždaug 6 kartus), ir paaugliams (maždaug 13 kartų, bet remiantis labai nedaugeliu mirčių, todėl šis skaičius labai neaiškus).
- Atsižvelgus į depresiją, ryšys su savižudybe sumažėjo labiausiai. Tarp žmonių su depresija savižudybių skirtumas lengvai galėjo būti atsitiktinis.
Abstract
BACKGROUND: Transgender persons have been reported to experience excess mortality, but evidence is dominated by Western cohorts and seldom addresses familial confounding. METHODS: We conducted a nationwide, retrospective cohort study using two prespecified comparison designs: matched population controls (1:4, matched on legal sex and birth date) and within-family cisgender sibling comparisons. Transgender persons were identified by ≥2 psychiatrist-recorded gender identity disorder diagnoses during 2001-2021; cohort entry required age ≥6 years. Participants were followed until death or December 31, 2022. We compared all-cause, external-cause (suicide and accidents), and internal-cause mortality using Cox regression adjusted for sociodemographics and medical comorbidity. FINDINGS: Among 3906 transgender persons (mean age 24.6 years; 70.6% with a male legal sex) and 15,624 controls (mean follow-up 9.5 years), psychiatric conditions were markedly over-represented in the transgender cohort (e.g., depressive disorders 40.8% vs 5.7%). Adjusted hazard ratios were 1.40 (95% confidence interval 1.06-1.84) for all-cause mortality, 2.03 (1.39-2.96) for external causes, and 4.07 (2.52-6.59) for suicides; accidents (0.56, 0.21-1.45) and internal-cause (0.98, 0.65-1.48) mortality did not differ. In sibling comparisons (4765 siblings), excess all-cause and external-cause mortality were not observed (0.96, 0.67-1.36; and 1.14, 0.70-1.85), suicide risk was higher (2.57, 1.32-5.00), and accident mortality lower (0.19, 0.06-0.67). Relative hazards were greatest in those with a female legal sex and in adolescents. Adjustment for psychiatric clusters attenuated-but did not eliminate-the suicide mortality excess. INTERPRETATION: In Taiwan, transgender persons had higher all-cause and suicide mortality than population controls; in within-family comparisons, the suicide mortality excess persisted, indicating influences beyond shared familial factors. Prevention should prioritize targeted mental-health and safety interventions, with particular attention to adolescents and those with a female legal sex. FUNDING: Taiwan National Science and Technology Council.
Conclusion
In Taiwan, transgender persons had higher all-cause and suicide mortality than population controls; in within-family comparisons, the suicide mortality excess persisted, indicating influences beyond shared familial factors. Adjustment for psychiatric clusters attenuated, but did not eliminate, the suicide excess, with depressive disorders producing the greatest attenuation. Prevention should prioritise targeted mental-health and safety interventions, with particular attention to adolescents and those with a female legal sex, including structured suicide-risk assessment at key points of care.