The chances of developing osteoporosis and cardiovascular problems increase with feminizing hormones.

The chances of developing osteoporosis and cardiovascular problems increase with feminizing hormones. Expand
The chances of developing osteoporosis and cardiovascular problems increase with feminizing hormones.

A 2012 paper [1] found that a quarter of the male-to-female transsexuals it studied had osteoporosis at the lumbar spine and radius.

In the same study, 6% of male-to-female transsexuals experienced a thromboembolic event (a blood clot causing obstruction), and another 6% experienced other cardiovascular problems. These effects were observed after only 11.3 years of hormone treatment on average.

A further study [2] found that long-term bone mineral density decreases in transwomen who take cross-sex hormones in the long term.

REFERENCES

[1] Wierckx, K., Mueller, S., Weyers, S., Van Caenegem, E., Roef, G., Heylens, G. & T’Sjoen, G. (2012). Long-Term Evaluation of Cross-Sex Hormone Treatment in Transsexual Persons. The Journal of Sexual Medicine 9 (10): 2641-2651. [Link]

[2] Delgado-Ruiz, R., Swanson, P., & Romanos, G. (2019). Systematic Review of the Long-Term Effects of Transgender Hormone Therapy on Bone Markers and Bone Mineral Density and Their Potential Effects in Implant Therapy. Journal of clinical medicine 8 (6): 784. [Link]