There is evidence that all-cause mortality is higher among trans people than among the general population.

All-cause mortality is higher among trans people than among the general population. Expand
There is evidence that all-cause mortality is higher among trans people than among the general population.

A Swedish study [1] found that sex-reassigned transsexual persons – both male and female – had approximately a three times higher risk of all-cause mortality than non-transsexuals. Elevated causes of mortality included cancer, cardiovascular disease, and violent crime:

This finding was backed up by a Dutch study [2], which stated:

This observational study showed an increased mortality risk in transgender people using hormone treatment, regardless of treatment type. This increased mortality risk did not decrease over time.

REFERENCES

[1] Dhejne, C., Lichtenstein, P., Boman, M., Johansson, A. L. V., Långström, N., & Landén, M. (2011). Long-term follow-up of transsexual persons undergoing sex reassignment surgery: Cohort study in Sweden. PLoS ONE, 6(2). [Link]

[2] de Blok, C.J.M., Wiepjes, C.M., van Velzen, D.M., Staphorsius, A.S., Nota, N.M., Gooren, L.J.G., Kreukels, B.P.C. & den Heijer, M. (2021). Mortality trends over five decades in adult transgender people receiving hormone treatment: a report from the Amsterdam cohort of gender dysphoria. The Lancet Diabetes & Endocrinology 9. [Link]