Why Blood Sugar Rises while Fasting (Don’t Panic!)

Why does your blood glucose rise very high in the morning—or while you are fasting—even when you haven't eaten a single thing?
If you have Type 2 diabetes or practice intermittent fasting and notice your blood sugar spiking on an empty stomach, don'tt panic. You did nothing wrong!

Think of your body like a fridge that has been filled to overflowing. Once you start fasting and give your body the signal to pull stored energy out, it begins releasing large amounts of stored glucose into your bloodstream so you can finally burn it off. This is simply your own stored sugar coming out of hiding. Stay the course and keep going
until those stored reserves are depleted and your blood glucose comes back down.

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Cameron Long

Cameron Long

Cameron is a seasoned CFO and CPA with 31 years in finance. He created the AI Trader's Playbook to help everyday investors use AI to find high-confidence trades — in minutes, not hours.

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15 Comments

  1. This is normal because you were fasting, body wants to protect you from hypoglycemia, so liver will synthesize it from glycogen and from fat stored in body (glucagon & cortisol) so no need to take any action.
    Dr. Arafat AlSulaiman, Clinical biochemistry

  2. With gestational diabetes, can you do the same thing? Or do you really need the insulin to force the blood sugar back down?

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