A Quokka Dreeds its Weird

I've struggled with anorexia most of my life (nearly died of it thirty years ago -- it's better controlled now, but still there), and I feel confident in saying that my mother, though as flawed as any other human being, was an uncommonly loving and supportive parent, "good enough" even on her worst days. I've thought about it a lot, and I'm inclined to see a conjunction of several causal factors, including two years of vicious daily bullying in junior high, low-level gender dysphoria, and probably a couple of different genetic quirks -- I read a fascinating article last year which suggested that people with anorexia not onlyhave high anxiety (everyone knows that), but are constituted such that starvation actually reduces anxiety significantly, which feels true to my experience, and would have been a useful evolutionary adaptation in food shortage situations. On some level, you cannot be hardcore anorexic unless you actually get some kind of pleasure out of starving, and I can easily see that as a genetic twist which takes the temperament which could go many other ways, and channels it in the starving direction specifically...