"Oral micronized progesterone

a fundamental ovarian steroid, molecularly identical to the natural hormone, should be added to E2 for transgender women based on physiology and emerging evidence of the importance of progesterone with E2 for ciswomen’s bone and likely cardiovascular health."

this was part of the conclusion of an scientific article, you can read here:

https://academic.oup.com/jcem/article/104/4/1181/5270376?fbclid=IwAR0juKsE20aXIyu6zCh__aY0cpedYyX4vhcZJmQiSclRGy_bXk_6RjhkQWQ#131626461