FBG after 8 hours sleep!

[Omar51]

FBG is first glucose when waking up typically after sleeping 8 hours and you're starting your day. If you're going back to sleep at 3 a.m., there's no need to test. ? Help!

 

[HairySmurf]

Strictly speaking Fasting Blood Glucose must be tested at least 8 hours after eating, and not drinking anything other than water during that time. Testing first thing in the morning before breakfast is the most convenient time, though it doesn't really matter how long you've been asleep so long as you haven't eaten for at least 8 hours.

Fasting Blood Sugar Levels

Fasting, as the name suggests, means refraining from eating of drinking any liquids other than water for eight hours. It is used as a test for diabetes.

www.diabetes.co.uk

The idea is to measure blood glucose at a time when food intake does not distort the numbers. In the fasted state blood glucose levels are almost entirely controlled by the pancreas and liver.

In simplistic terms, when fasting:
1: The pancreas produces glucagon when blood glucose levels get low
2: The liver responds to glucagon by producing glucose
3: The pancreas responds to sufficient glucose levels by stopping glucagon production and by producing insulin
4: The liver responds to insulin by stopping glucose production
5: This cycle repeats, over and over, to keep blood glucose levels quite stable

In a Type 2 diabetic steps 3 and 4 tend to be compromised. Again, in simplistic terms, the pancreas doesn't produce enough insulin and/or the liver doesn't respond to insulin properly. The result is higher fasting blood glucose levels.

 

[Omar51]

Strictly speaking Fasting Blood Glucose must be tested at least 8 hours after eating, and not drinking anything other than water during that time. Testing first thing in the morning before breakfast is the most convenient time, though it doesn't really matter how long you've been asleep so long as you haven't eaten for at least 8 hours.

Fasting Blood Sugar Levels

Fasting, as the name suggests, means refraining from eating of drinking any liquids other than water for eight hours. It is used as a test for diabetes.

www.diabetes.co.uk

The idea is to measure blood glucose at a time when food intake does not distort the numbers. In the fasted state blood glucose levels are almost entirely controlled by the pancreas and liver.

In simplistic terms, when fasting:
1: The pancreas produces glucagon when blood glucose levels get low
2: The liver responds to glucagon by producing glucose
3: The pancreas responds to sufficient glucose levels by stopping glucagon production and by producing insulin
4: The liver responds to insulin by stopping glucose production
5: This cycle repeats, over and over, to keep blood glucose levels quite stable

In a Type 2 diabetic steps 3 and 4 tend to be compromised. Again, in simplistic terms, the pancreas doesn't produce enough insulin and/or the liver doesn't respond to insulin properly. The result is higher fasting blood glucose levels.

My fasting hours are quite odd, along with my lifestyle. I fast for 8-10 hours (no food, only water). So far it’s working well for me. My FBG and my A1c are in non diabetic range and I don’t take any medication. Thanks for your help and good information!Omar

 

[Lamont D]

Strictly speaking Fasting Blood Glucose must be tested at least 8 hours after eating, and not drinking anything other than water during that time. Testing first thing in the morning before breakfast is the most convenient time, though it doesn't really matter how long you've been asleep so long as you haven't eaten for at least 8 hours.

Fasting Blood Sugar Levels

Fasting, as the name suggests, means refraining from eating of drinking any liquids other than water for eight hours. It is used as a test for diabetes.

www.diabetes.co.uk

The idea is to measure blood glucose at a time when food intake does not distort the numbers. In the fasted state blood glucose levels are almost entirely controlled by the pancreas and liver.

In simplistic terms, when fasting:
1: The pancreas produces glucagon when blood glucose levels get low
2: The liver responds to glucagon by producing glucose
3: The pancreas responds to sufficient glucose levels by stopping glucagon production and by producing insulin
4: The liver responds to insulin by stopping glucose production
5: This cycle repeats, over and over, to keep blood glucose levels quite stable

In a Type 2 diabetic steps 3 and 4 tend to be compromised. Again, in simplistic terms, the pancreas doesn't produce enough insulin and/or the liver doesn't respond to insulin properly. The result is higher fasting blood glucose levels.

All what you say is quite factual and happens as you say.
But have missed important details such as the first and second insulin (hormonal) response. It is not only insulin that reacts to food etc. There is a whole list of em. But also if those hormones including insulin is out of balance with what is required to be considered a normal response. As with insulin resistance, the pancreas still responds with an excess amount that is not used. Also that is why many drugs have evolved for such imbalance of first phase response.
Another aspect that is now being taken as a primary focus, is what could be termed as the gut, brain axis. It is known as other descriptions, but that is how the signals for the hormonal response, is directly effecting your blood glucose levels. Your gut biota and the good and bad bacteria, has a impact on how your brain signals the organs, the glands, the digestive juices and so on. It all interacts.
Saliva is produced before eating, hunger pangs, noisy stomach, satisfying signals. Tasting, smelling and viewing food has your senses and juices flowing.
All the body's natural enjoyment of your favourite foods
Don't forget the body's intolerance to certain foodstuff as well.

I have a condition, when I have an excess of insulin, my liver doesn't create enough glucagon to stop a hypo.

FBG, is termed as eight hours after eating or fasting. Beware of dawn phenomenon if you sleep that long or longer.
I have found that half an hour or later after waking before breakfast is preferable. But it could be before eating if you are intermittent fasting.

 

[HairySmurf]

All what you say is quite factual and happens as you say.
But have missed important details such as the first and second insulin (hormonal) response....

Agreed - I left out all the complexity as I don't understand it and can't ever hope to. I wasn't aware that the first phase insulin response occurred in the absence of a rapid rise in blood glucose as a result of a meal for example. I had assumed that there was a gentle 'basal' insulin response in the fasted state, which goes to show how little I know on the subject.

I doubt any of us on this forum will understand all the complexities in our lifetimes. Firstly it's fiendishly complicated, and secondly the science isn't there yet even if we wanted to learn it all. The 'fasting hormone' asprosin, which might perhaps (in my amateur opinion) be part of the explanation for the dawn phenomenon, was only discovered in 2016 for example. Who knows what other pieces of the puzzle remain to be discovered, and how long it will be before some genius manages to fit all those pieces together and explain it all.

 

[Lamont D]

Agreed - I left out all the complexity as I don't understand it and can't ever hope to. I wasn't aware that the first phase insulin response occurred in the absence of a rapid rise in blood glucose as a result of a meal for example. I had assumed that there was a gentle 'basal' insulin response in the fasted state, which goes to show how little I know on the subject.

I doubt any of us on this forum will understand all the complexities in our lifetimes. Firstly it's fiendishly complicated, and secondly the science isn't there yet even if we wanted to learn it all. The 'fasting hormone' asprosin, which might perhaps (in my amateur opinion) be part of the explanation for the dawn phenomenon, was only discovered in 2016 for example. Who knows what other pieces of the puzzle remain to be discovered, and how long it will be before some genius manages to fit all those pieces together and explain it all.

My condition goes against many specialist theories about the science of how and why, the hypos happen because my BG levels go above a certain level, somewhere above 7mmols ish. That is the trigger for the signals to overproduce insulin because the first phase wasn't enough. It has a lot to do with cell production of certain cells, indeed epinephrine is one. The science thing is complicated. But the process of you leave out the details is comprehensive explained. And that is what I had to discover, it was quite rare when I was diagnosed, but as the condition is becoming more understood by more specialist endocrinologists.
However, there is still many of them that can't get there heads around that it is food and drink that causes the trigger. Mainly because of carbs and sugars.
And the standard treatment is still as if they don't understand how to stop the hypos is avoidance of carbs and sugars. Going keto works for many types of hypoglycaemic conditions. But the NHS won't recommend it.

This forum is based on an alternative treatment of dietary recommendations.
And the success of its members.
Which includes myself.
I doubt I would still be around if I didn't learn, research, understand and discover my nutritional needs.
And of course what to avoid.
Hypos for me are quite rare.
And my overall endocrine health is very good.
Just the rest is falling apart!