Yeah having too many carbs from sugar just made me jittery and high cortisol. Starch seems to be a more stable source of calories in some respects. Also as I say, I am having to start eating more while on thyroid. Yesterday I had around 4300 calories, and keep in mind that's with virtually zero fat, so that's a LOT of carbs lol.
Perhaps of note too is yesterday I ate enough food that I lasted the whole night without a midnight snack, and I feel that had an impact to my waking temps. I know it's something most of us here know and have heard, but it's worth repeating. If you run out of glucose at night, you are going to have problems. I seemed to run out of glucose more often when my dietary fat was higher in particular. I think that is because I replaced glucose calories with fat, which reduced my overall glucose intake AND interfered with the metabolism of glucose I DID eat. Note that I single out glucose. Glucose matters more than fructose. For storage of carbs at least. So a heavy glucose meal at night (which I did yesterday) seems far more beneficial than a fructose (fruit) heavy meal. Now, fructose DOES seem helpful for immediate access of energy, so it's more useful earlier in the day. The glucose heavy meal however lets you store carbs overnight more readily. And I often crave fruit earlier in the day which seems to validate my theory. Later in the day is when I want the heavier stuff like potatoes or oatmeal.
I now believe eating in the middle of the night is bad and screws with your circadian cycles. You should only eat from sunup to sundown. If you are waking up at night to eat, it means you didn't eat enough in the day, so eat more the next day.
I really wish I had more of an appetite because glucose is the limiting factor for brain development, but I can't stomach more than 2000 calories a day. Do you just eat loads and loads of unfortified white rice?