Over at Stained Glass Woman, Doc Impossible has written a fun piece about HRT and what it does regarding DNA. As ever, the “basic biology” crowd are ignorant about actual biology: the super-short version is that DNA is an instruction book but hormones decide which specific instructions your body will actually follow. Change those hormones and the body changes too, and not just superficially.
I love this stuff: as in other areas of science, the more we know the more we discover about the sheer complexity, variety and, if faith is your thing, miraculousness of it all. To paraphrase Hamlet: there are more things in heaven and Earth than are understood by social media science deniers.