>>40275060https://pmc.ncbi.nlm.nih gov/articles/PMC8955456/
pre-hrt brain structures in transwomen, notably differentiated from cismale, resting between cismale and cisfemale groups
https://pubmed.ncbi.nlm.nih gov/40145530/
https://pubmed.ncbi.nlm.nih gov/30082887/
brain structures of tgirls change on hrt, furthering similarity with cis women
here are some studys that document brain differences. its obv not 1:1 but shows brain structures to be distinctly different from biological men, before hrt and more so after.
sorry ftms most of these studys are about trans women for some reason (prolly bc the world still sees u as women and so wont properly dedicate funding towards research for u)