The reason people distinguish is because HRT back in the day was not bioidentical! Estrogen was from horses(?) (and idk what they did for testosterone) and caused a bunch of other side effects because it wasn't bioidentical to human hormones. That’s why a lot of older regulations try to keep people at such low max dosages - non-bioidentical hrt is way more dangerous, so you can have less of it before it fks you up. We haven't found similar issues with bioidentical hormones, so we can take more