You are right on the money. I went to see a specialized "sleep" doctor around 2006 (can't remember the name of the specialty) in Paris, St Anne. He diagnosed what translates as a "phase shift" of my circadian rythm by ~4 hours (thus my daily cycle runs 28h give or take, sleep remains at 8-9 hours though).
I'm really not a biologist, let alone neurologist, but from what information I could gather, I observe these 'abnormalities' of mine (the good as much as the bad) all seem to stem from the hypothalamus region/function. E.g. I also have a weird digestive cycle, basically ketogenic (1 big meal per day, typically for dinner) is my natural regime. I don't eat for ~10 hours after I wake up usually, then eat a 1.5~2x meal in quantity. Unless I go to sleep, I'll then keep eating regularly however.
But how do you even investigate, let alone 'fix' a malfunctioning hypothalamus?.. I never heard or read anything about such research let alone treatment.
