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[personal profile] mattbell
A lot of our efforts to be healthier suffer from the problem of lack of feedback. While people can track changes in strength and endurance quantitatively as they exercise, effects of dietary choices are much harder to track. You can monitor weight, but weight is far from the complete picture of health.

Enter the glucose meter. Diabetics are constantly poking themselves to determine their blood glucose levels. However, there are many good reasons for nondiabetics to use them as well.

People who are trying to eat healthier are constantly talking about the glycemic index of foods -- food with high glycemic index such as sodas full of corn syrup tend to cause big spikes in blood sugar, which put stress on the body and can lead to numerous health issues.

It turns out that for around $30 or so, you can test your blood sugar numerous times and get a sense for how different types of meals affect your blood sugar levels. This basically gives you feedback about how much you´re stressing your body. I think this is one of the things that people who are interested in maintaining their health should do. It´s a lot better than making dieting decisions in the dark. Even if you know what you *should* eat, seeing the consequences of your actual diet will help motivate you to change. Psychologists have found that this sort of real-time feedback greatly aids self-improvement.

You can also do a full-on glucose tolerance test, which gives an indication of whether you´re likely to develop diabetes. The glucose tolerance test involves consuming 100g of glucose (around three cans of soda) and then watching what happens to your blood glucose levels over the next six hours.

You can read more and interpret results here:
http://hypoglykemie.nl/gtt.htm

Also, this blogger talks a lot about his experience using a glucose meter as a dietary tool:
http://heartscanblog.blogspot.com/2010/01/to-get-low-carb-right-you-need-to-check.html

Given how common diabetes is, it´s probably worth doing a glucose tolerance test even if you have no family history of diabetes.

---

Here was my experience:

I´m usually very grumpy in the morning, and the grumpiness is partially mitigated by a nice protein-rich breakfast. Not today. Instead, I drank three bottles of the only soda I find palatable -- Reed´s Ginger Brew. Drinking that much soda in one sitting was horrendous, like something out of a college dare. It probably doesn´t help that I don´t drink sugary drinks on a normal basis. Even after the 100g of glucose was happily absorbed by my intestines, I still felt hungry. The hunger and grumpiness got worse over the next six hours. Meanwhile I made my way through the test strips, watching my blood levels fluctuate.

My fasting level was 74, and my glucose never got above 116. Apparently I´m in good shape.

I´ve been testing myself after other meals. I saw a significant bump was after deliberately trying to see what would happen if I consumed a large high-carb meal that was more to my liking. Turkey + pesto sauce + cheese + 180g of carbs from a huge pile of pasta managed to put me up to around 118, and that meal was chosen to really test the limits of my system.

I was curious to see if I am prone to hypoglycemia. The results say no. However, I found the following on wikipedia:

Hypoglycemia (common usage) is also a term in popular culture and alternative medicine for a common, often self-diagnosed, condition characterized by shakiness and altered mood and thinking, but without measured low glucose or risk of severe harm. It is treated by changing eating patterns.

That sounds more like it. I seldom go through the day without frequent snacks.

Date: 2010-02-07 09:40 am (UTC)
From: [identity profile] maradydd.livejournal.com
Funny you should mention that; I picked up a blood glucose meter on clearance for $7 on a whim tonight, thinking of possibly figuring out how to hack it to test for other chemicals detectable in blood, e.g., hormone levels.

Date: 2010-02-07 05:17 pm (UTC)
From: [identity profile] nasu-dengaku.livejournal.com
How do they work? I assume most of the interesting stuff happens in the test strips -- eg glucose reacts with some chemical in the strips, and then the result of this reaction affects resistance or capacitance in the circuit.

Date: 2010-02-07 02:04 pm (UTC)
From: [identity profile] starling321.livejournal.com
Since I know what REAL low blood sugar feels like, from taking insulin while pregnant, I know that what most people experience is relatively minor and could be fixed by eating every 3.5 hrs.

Your numbers are completely normal. Even normal people would go higher than 160 after 180g of carbs. So you are in seriously good shape. But you look like you barely have any body fat so honestly that goes without saying.

Do you have a family history of diabetes?

Date: 2010-02-07 05:04 pm (UTC)
From: [identity profile] nasu-dengaku.livejournal.com
No family history. I was curious if I was hypoglycemic though... apparently that's not the case.

Date: 2010-02-08 07:20 pm (UTC)
From: [identity profile] sandrak.livejournal.com
My understanding was that the definition of diabetic is that your glucose levels _ever_ get above 150.

Date: 2010-02-08 07:35 pm (UTC)
From: [identity profile] starling321.livejournal.com
Nope. It might mean that you might become diabetic someday, but a single reading over 150 does not by any means constitute a diagnosis of diabetes.

Date: 2010-02-09 10:05 pm (UTC)
From: [identity profile] tenacious-snail.livejournal.com
it used to be that a *fasting* glucose level over 150-something was the diagnosis. They've dropped it some, to 140. (note that this is an American measurement, I think there are other scales used in other countries, that result in completely different numbers).

Date: 2010-02-07 03:53 pm (UTC)
From: [identity profile] tenacious-snail.livejournal.com
I've not heard of what nondiabetic blood sugar is like, so that is interesting. And so very very different from my experience. The highest I've seen my blood sugar go-- when trying to see it be high-- was like 280. And that was with far less sugar than you had.

(though I will also note that cooked carrots and baked potatoes will lift my blood sugar far higher than table sugar).

Date: 2010-02-09 10:27 am (UTC)
From: [identity profile] nasu-dengaku.livejournal.com
What does 280 feel like?

Date: 2010-02-09 10:03 pm (UTC)
From: [identity profile] tenacious-snail.livejournal.com
fuzzy. Intoxicated. Slightly speedy. Mildy nauseated. Irritable.

(very low-- for me under 85 or so-- also feels fuzzy, but more dizzy, unable to concentrate or make decisions, wobbly, prone to sweating)

Date: 2010-02-08 07:27 pm (UTC)
From: [identity profile] sandrak.livejournal.com
15 years ago I had a diabetic boyfriend and tested myself on his equitment. I followed online data saying that a standard test was 50mg of dissolved sugar after overnight fasting. My pre-test was 75, fifteen minutes later it was up to its highest point of 145, and ten minutes after that it had dropped to 60. Which explains why I'm often hungry after large meals, but not after smaller ones. It seems to me that not only do I release too much insulin, but it releases late, so that I continue to feel hunger after eating for about fifteen minutes, and then if I've kept eating because I'm still hungry, I'll feel briefly overfull and then hungry again within half an hour. Most annoying!

Date: 2010-02-09 10:26 am (UTC)
From: [identity profile] nasu-dengaku.livejournal.com
My first thought was... holy shit, we *were* using the internet 15 years ago! :-) Also, your glucose experience seems like quite a roller coaster. Do you deal by having a long succession of small meals?

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