JesusA wrote: Tue Feb 19, 2019 11:25 pm
[Note: one should avoid oral estrogens as they increase the risk of blood clots. Taking E2 through the skin appears to be safer.]
Thanks Jesus for this good and comprehensive summary.
One thing I would like to add: According to newer trials and surveys, the risk for blood clots taking newer pharmaceutical forms of estradiol (E2) does not seem to be higher than without estradiol replacement.
The higher risk obviously was connected to taking ethinyl estradiol, a variant used widely before ca. 2005. It has a higher potency and different pharmacokinetic properties. It is more widely used in contraceptiva and has received some attention and controversy due to blood clots, embolism and maybe deths of women taking it for birth control.
Newer forms like estradiol hemihydrate (unconjugated estrogen, also called 17beta-estradiol or E2) do not show a much increased risk for venous thrombosis events. See
https://doi.org/10.1016/j.jcte.2015.02.003 and other papers on the topic of HRT in transgender patients. It looks also (according to that paper) as though there might be a predisposition for higher thrombosis risk on estradiol stemming from a specific genetic defect.
I myself am taking 1-2 mg oral 17beta-estradiolhemihydrate since about 24 months, after I had been castrated 28 months ago now. I had a bone density scan done shortly after the castration and am planning to get the next one towards the end of this year. I mainly started the estrogen because of the severe hot flashes which prevented me from sleeping about three months after the castration. I am also welcoming the feminizing effects, although I consider myself non-binary and not trans female.
I am currently trying to get a prescription from an endocrinologist, but that is a bit difficult as long as you do not identify as m2f, at least in Germany.