OK, finally I get time to respond. Firstly, I want to say thanks for all the replies, suggestions and theories; this kind of thing is the very reason I joined the forum, and I just knew there would be some brilliant people on here who could suggest some things. Now, my responses:
Yes, I will take a look at the Reactive Hypoglycemia posts, a very good suggestion.
@Brunneria:
Thanks for that, this is certainly a possibility. Actually, one other guy with CFS who has similar symptoms attributed them to something just like what you are describing. He had hyperinsulinemia, and the high insulin would cause his blood-sugar to drop suddenly, resulting in hypoglycemic symptoms. And yet his blood-sugar levels were normal... sounds a lot like me. He had his insulin levels tests with an endocrinologist. I had an appointment with one of them too, at one stage, but didn't have the energy to leave the house... that is the difficulty in getting things tested with CFS, especially when you are housebound or bedbound.
However, if the adrenaline and cortisol corrects the drops in blood-sugar, why do the hypoglycemic symptoms continue? That part is not quite adding up to me. If I were to test my blood-sugar levels every 15 min, do you think I would catch the drop, or could I still miss it? Would a monitor like
@paulliljeros is suggesting, help with that?
To take it one step further, lets say your theory is correct, and it is dropping very fast... what to do about that? How to fix it?
@slip:
I'm vegan. So going very low carb is pretty much impossible for me, I think. However, almost all my meals are slow acting carbs, like beans and brown rice etc.
I'm not sure that the stomach is completely empty after three hours... but that is an interesting theory. But why would that be the case? I've never heard anything like it before.
@nosher8355:
Yes, I've heard of idiopathic postprandrial syndrome before... I agree, it does sound a lot like it. How could one fix this kind of thing?
@catapillar:
Sorry, but I don't quite understand... isn't the function of eating (mainly) to keep our blood-sugar good? What would happen for a normal person? Would they eat breakfast, and, then, after about 5 hours, what would their blood-sugar levels be when they started getting hungry for lunch? Would they be around 4mmol/L or 72 mg/dL, as you said above? In other words, wouldn't their blood-sugar going to that level trigger their hunger?
If that is the case, why would I desperately need to eat with a blood-glucose level of, say, 5 or 6mmol/L?
Once again, thanks for all the replies.