Blood Sugar Readings: Thriving Diabetic

Example of a past CGM screen.

Before I begin let me Thank (TDS). 

I could not test and experiment as much as I do if it were not for TDS providing me with free testing supplies. By the way, I am not compensated (other than free supplies) .  They in no way influence my decisions or posting other than a ‘thank you’, occasionally. :)

Continuous Glucose Meter

Did you know I’ve worn a Continuous Glucose Monitor (CGM) before? Except for very INTENSE exercise my blood sugars stay sub 100 mg/dl all day… pretty much a flat line with small increases associated with meal times. A CGM is typically used by insulin dependent diabetics to help them monitor and treat their diabetes, often in conjunction with an insulin pump.

Here are a few previous posts from the past using screen shots of the CGM.

ADA Can’t Touch This, Exercise and CGM, and this is the post I tracked my OGTT with a CGM.

My point? I miss not being able to show people the usual flat line, of maintaining steady, truly normal blood sugars.  Displaying a 12 or 24 hour flat line creates a stark contrast to the typical diabetes roller coaster; the soaring highs and crashing lows that most diabetics experience.

Blood Sugar Readings

On the 15th,  I tested my blood sugars numerous times in an attempt to give you a sense for my ‘steady’ blood sugars.

Below is my overnight Fasting Blood Sugar (FBS).  This was taken within minutes of waking.

Note: Add an hour to the times, I never reset. For example, this test below was done at 6:50 AM.


About two hours later, after drinking coffee and moving around a little, a 74 mg/dl.

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I only drank water and coffee prior to a 2 mile bike ride to the local park.

It’s not a VERY intense ride but I always push myself.  I usually have a 10 -15 point increase in blood sugar.  The result was expected, a 16 point bump from my last reading five hours earlier.

After taking this blood sugar reading I ate a handful of WILD crabapples and two handfuls of ripe and unripened WILD grapes. :)  90 mg/dl.

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I guesstimate I consumed @ 12 grams of carbs from the crab apples and about 12 grams of carbs from the grapes.  Some of the grapes were ‘green’ and I did account for their reduced sugar totals, but this is a ROUGH estimate.

After eating the foraged fruit, I discovered a flat tire on my bike. Instead of calling and getting a ride I decided to push my bike home.

After eating about 24 grams of carbohydrates and pushing my bike back,  1 hr and 42 minutes later my blood sugar was …. 89 mg/dl.  I was elated. :)

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Note:  No doubt the walking helped reduce my blood sugars.   I wish I had stopped along the way to test to see more of the response, but I can say that about every experiment. More testing equals more information. :)

That’s the beauty of a CGM, you can see a ‘picture’ of your blood sugars 24 hours a day, in 5 minute increments.  (Every 5 minutes it reports the results)

I tested once more, after eating ground beef, two eggs and a few slices of onion for flavor, below is my 1 1/2 hour post meal blood sugar. 86 mg/dl

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To Complete the 24 hour ‘day’, below is my overnight fasting blood sugars the next morning. 75 mg/dl.

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In Closing

When testing blood sugar levels with a meter, one never really knows the highs and lows of the day.  You only see a ‘snapshot’ at that moment in time.  In all likelihood, the actual lows and highs exceed your readings. The odds are slim that you would test at the exact highs and lows.  Still, I had a 16 point difference in blood sugars readings from highs to lows… I’ll take it.

From my past experiences of wearing a CGM (for more than a month) and from the numerous tests… my blood sugars stay sub-100 mg/dl the vast majority of the time.  My only usual trips above 100 are due to very intense exercise, the rare high-er carb meals and even more rare cases of illness, injury or excessive stress.

Below is an approximation of how my blood sugars might look on a CGM, the chart does show the actual data points from my testing.

24 2

I love seeing a relatively flat line.   Go “Very Low Carb Paleo“.

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