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Fasting Blood Sugar higher than after eating

RM51

Member
Messages
6
Type of diabetes
Prediabetes
Treatment type
Diet only
Hello

I am borderline pre-diabetic (just on the cusp) and as such have annual HbA1c blood tests. I am due one in a few weeks.

My fasting blood results are always in the region of 7- 8 mmol/l (and have crept up a bit this year) but during the day/before bedtime and 2 hrs after eating they typically range from 4.9 to 5.6.

Does anyone else have similar readings? The pattern looks unusual.

Cheers
 
Hello

I am borderline pre-diabetic (just on the cusp) and as such have annual HbA1c blood tests. I am due one in a few weeks.

My fasting blood results are always in the region of 7- 8 mmol/l (and have crept up a bit this year) but during the day/before bedtime and 2 hrs after eating they typically range from 4.9 to 5.6.

Does anyone else have similar readings? The pattern looks unusual.

Cheers
If your fasting blood glucose levels are measured just after getting up then it's likely that your liver has produced an extra burst of glucose to get you going. Known as the dawn phenomenon. That's normal.

Your 2 hr post meal levels are good.
 
Last edited:
Hello

I am borderline pre-diabetic (just on the cusp) and as such have annual HbA1c blood tests. I am due one in a few weeks.

My fasting blood results are always in the region of 7- 8 mmol/l (and have crept up a bit this year) but during the day/before bedtime and 2 hrs after eating they typically range from 4.9 to 5.6.

Does anyone else have similar readings? The pattern looks unusual.

Cheers
Hello there,

Thanks for sharing, i am Abraham Lincoln, and has returned to the forum after a very long time, a few years even. I was diagnosed with pre-diabetes with a number of 42mmol which in medical terms is 6.0% above the normal range which i believe to be 20-41mmol.
I say number,as through my research, and study of diabetes, and by the way i have taken my health very serious as of Aug 02nd 2025, and determined to get at a healthy weight for my frame, and be able to live a healthy life way into my latter years. Lots to be said but back to the point of HbA1c, from my understanding of glucose, and by the way i am not a medical profession, so any thing i say, or suggest it is of my own experience, and not meant to replace your GP's advice. Please always check with your medical practitioner for health advice. I am an IFaster, Intermittent faster from 02/Aug/ 2025 just recently, and i have seen so much health benefits taken place in my body, including my Blood pressure which was a bit higher than normal, my last reading at my GP practice was 161/100. Funny as it seems, as i was told i have white coat syndrome, that's a condition, where a person's numbers can be higher when they are in a doctor's/ medical settings, just being too anxous basically when around white coat doctors, and nurses. And the minute i take it at home, it is fine, as i am better in a relaxed environment. (Hypertension), As i speak this morning i took my B/P and it was 124/81, it has come down a lot from previous years, and at a normal range for my age -61yrs. MyHbA1c is at 5.4- 35.5mmol which is in the normal range, my waist size has dropped from 49 to 46inches in 2 months, i am happy being a turtle faster, want for a better word, slowly but surely. It took me years to get the weight on, and develop these metabolic health problems, and i am happy to go slowly, however long it takes to get to my ideal weight, maintain, and live a healthy life. I have noticed however, and it is a natural thing for our blood sugar to increase when we eat, and return back to baseline around up to two hours or so after we eat, depending on what we eat, and if we are constantly eating. If we are constantly eating as per the norm today, when food, snacks and treat are so readily available, then without a shadow of doubt, our blood sugar, and Insulin will remain sky high. I had that experience just a few days ago. When i checked my fasting blood sugar, it was 5.4 in my fasting state, and when i open my fasting window to break-Fast- Break my fast, it went up to 7.4 after i ate, that i believe is normal, and when i check again two hours after eating it fell back down to 5.4, which gave me a better, and clearer understanding of how my bloo sugar, and Insulin works, after, and before eating.
 
Everybody, including non-diabetics get an initial increase in BG after eating some carbohydrates because the insulin response isn't as fast as digestion of most carbs (some of which turn into glucose whilst still being chewed).
This is the reason that it is bets to check BG just before first bite and then 2hrs afterwards, by which time the BG in a non-diabetic will have returned to the pre-meal value..
 
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