My FBG has been 6.7 since I woke up and it won’t come down on its own. I try to only eat if I get a reading of below 6.0. Is this normal? Should I just eat anyway? I’m just worried that it will go up really high if I eat and not come down. I’m not on any medication and only considered pre-diabetic
My BG will continue rising slowly in the mornings until I eat something. This doesn't have to be much - 3 or 4 almonds will stop it. If I don't eat it will still be rising slowly at 2pm (which is where I gave up on the experiment).
If you eat, your BG won't rise anyway (I'm assuming you mean at the two hour point) unless you eat some quantity of carb, more than your system can cope with.
What's happening is that your BG level is being maintained and increased by your liver from its own stores. It holds these in case you don't manage to find anything to eat that day. The longer you don't eat, the more convinced your liver will be that it needs to be keeping adding glucose. Eating something/anything seems to switch this off.
If you fast for a longer period, the liver will eventually deplete its own stores and have to start manufacturing glucose from bodyfat - this is ketosis.