Why is my fasting blood sugar high but my a1c is normal

Why is blood glucose elevated when fasting? Do you need keto macro guidelines when fasting? What is the optimal way of breaking a fast? And, can you talk about the psychological part of fasting?

It’s time for this week’s Q&A about intermittent fasting and low carb with Dr.

Jason Fung:

Fasting & elevated blood glucose

Type 2 diabetes for 20+ years. Started keto with intermittent fasting in January 2019. Why would my fasting blood glucose numbers during my 18-24-hour fast be elevated, then come down to normal ranges after eating?

Mindy

Fasting can definitely raise blood glucose.

This is due to the effect of insulin falling and the rising counter-regulatory hormones including increased sympathetic tone, noradrenaline, cortisol and growth hormone, in addition to glucagon. These all have the effect of pushing glucose from liver storage into the blood.

Is 135 blood sugar high in the morning

This is normal. If you are not eating, you want to use some stored glucose. The question is this – if you are not eating, and your blood glucose went up, wher

how come my fasting blood sugar is high

what if my fasting blood sugar is high