Peadair - Well done on making a difference to your blood sugars.
Many people can see a reduced number after eating, particularly after breakfast. That's often due to Dawn Phenomenon, and sometimes just due to breakfast not being incredibly substantial. It can happen with meals too where the carbs are quite low.
My feeling would be it's likely one or more things are in play:
- you are eating very low carb, and therefor there's not much in way of quick blood glucose on offer for your body to deal with.
- you are eating lots of fat which takes longer to show on the blood glucose meter
- you are pretty empty leading up to meals times and your liver is dumping it's stored glucose into your bloodstream before lunch and that's being picked up on your pre-meal test. When that happens, whatever you eat next will be used by your body to restore it's liver reserves. I liken it to my liver being a bit like a rechargeable battery. I run it down, then top it up again, as soon as it is offerred fuel (what we eat, as opposed to electricity).
And, of course, it could be combinations of those potential causes.
Are you feeling well on those numbers, and are you trimming up, quite quickly?