Why does my glucose rise in the morning?
If you notice a slight rise in your blood glucose first thing in the morning - even before you’ve eaten anything - you’re not alone and likely have nothing to worry about. Known as the dawn effect, this phenomenon is a normal hormonal response that triggers the liver to release sugar into the blood to wake us up and be alert for the day.
You may also see a slight elevation in your blood glucose from a hot shower or caffeine, which elevates blood sugar levels among some people. The best way to pinpoint the root cause is to isolate these variables and monitor how your blood glucose responds.
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