EDs in adulthood

It's a strange thing to develop an eating disorder in your thirties without having had too much of an issue in the years prior to this.
I've waded through thousands of Google pages in an attempt to find articles about late onset anorexia and bulimia. I suppose because I was hoping that someone far more knowledgeable than me could offer me a piece of jigsaw that I don't have. I was hoping to find a few sentences that would make sense of the jumbled, misshapen blobs of bewildered guesses that occasionally float between my cornea and the mirror of anorexic truth.

Most of the articles documenting episodes of anorexia in later life are actually about the recurrence of an eating disorder which the patient has suffered from as a young person. Easier to understand a relapse than an illness that comes from out of the blue.

So, what then, is going on if there is no SERIOUS tendency towards this illness until a person is in their early thirties?
What is going on there?

I'm possibly as lost as anyone else when it comes to understanding this.
I have sketchy ideas (at best) that when pursued, completely fragment and disintegrate and at once become impossible and absurd.

I haven't been here too much of late. Not for lack of wanting to write; more for not being able to find the energy.

I have a lot to say but very few words to speak with.
Please forgive me if I am not responding as much as I should be.