Hi
@Krystyna23040 , this is not random. It just means that your liver had some sugar and dumped it into your blood. We ignore outliers at our peril, it’s where all the good info lies.
Anyhow, this from Dr Fung;
Increasing blood sugar when fasting
Why does my blood sugar level increase from 86 to 112 mg/dl (4.8 – 6.2 mmol/L) when I do a 20-hour fast? Is that normal? I’m on an LCHF diet.
Thank you doctor,
Alvaro
Answer:This is a normal process. When you fast, insulin levels start to drop and this triggers a surge of counter-regulatory hormones, including noradrenalin and growth hormone. This is normal, and meant to pull some of the stored sugar from the liver into the blood. If your liver is full of sugar, it may release lots of sugar into the blood, causing the blood sugar to rise.
So, yes, blood sugar may rise during fasting. The most important question to consider, though, is where this sugar came from. If you are not eating, the rise in blood sugar may only come from your own body. You are simply moving sugar from the liver to the blood. It means that there is too much sugar stored inside your body and you need to empty it out, either with LCHF diet or intermittent fasting
Dr. Jason Fung
