Hmm. Roz, I'm a tad farther along on the spectrum (if there's a spectrum?) in that I don't get hungry. At all. I went 36 hours without eating, once, just to see what would happen, and never felt hungry. I only started eating because I felt funny and a little loopy. (Years later, as a diagnosed T2 diabetic under medication, I recognized the feeling as low blood sugar.) I remember being hungry as a kid, so I attribute the change to brain damage (plane crash with head injury & TBI at age 24).

It's been a mixed thing.

Yes, I used to be able to diet very easily because I stopped eating. OTOH, I enjoy eating, and I don't have the "not hungry now!" switch to tell me to stop. So mostly I've been overweight.

Also, I live with a normal person, and I do most of the cooking, so if I get caught up in something (like writing) I might forget that SOMEBODY is hungry and needs to eat (I now have an alarm that goes off every evening to remind me).

Or I start feeling funny and a little loopy, so I suddenly need to eat something NOW (preferably with a lot of glucose, usually poison for me) before I get *very* loopy... but I don't have hunger pangs to warn me.