"Huh, what?" you ask! What are you talking about? Well it's a bit complicated and you can read about it for yourself at Jenny Ruhl's "Blood Sugar 101" web page here: "How Blood Sugar Control Works- And How It Stops Working"
I was reading Jenny's hard copy "Blood Sugar 101" book for the second time through and I just wanted to wrap my head around this and try to understand it. I also became very interested in what my own responses were.
Most of us type 2's don't follow our blood sugar too closely. We may test in the morning or perhaps after a meal so we have a general idea of what our average blood sugar may be. The quarterly or twice yearly A1C gives us another indication. But what is really going on with our insulin response. What happens in those few hours after a meal when we aren't testing? How good or bad is out insulin response?
These were the questions I wanted to answer about my own body. Do I have impaired phase one insulin response? Failed phase 2 insulin response? Both?
I was surprised after doing both experiments. A bit disappointed too!
The first picture is one testing my 1st phase insulin response by taking 1-1/2 tsp of sugar right after testing my fasting blood sugar. This is equal to about 7-8 grams of carbs which was certainly not carb loading. It mimicked an average carb meal for me. I started out with a nice 76 mg/dl (4.2 mmol). In the picture you can see the rise at 15 minutes. At 30 minutes it is already on it's way down. At 90 minutes my blood sugar it is back nearly to where it started at 80 mg/dl (4.3 mmol).
Go to the larger Google Drive chart here.
This was shocking to me! Looking at this you would question if I even was diabetic! This is exactly the way a non-diabetics blood sugar would respond in 90 minutes or so. The increase to 96 a half hour later may have been due to a glucose dump by the liver after blood sugar went below 80.
Exciting news, right! But here is the not so exciting news. My other experiment didn't fare so well.
Here is a chart of two meals eaten yesterday. These were both usual meals for me. I weighed the protein portions to be exactly 3 ounces since that is what I have determined is the right amount for my diet. Both meals were LCHF ketogenic meals with added fats. I stopped taking all of my supplements for this experiment as well so that I could get a true picture of how my body handled the meals without help from anything else.
Lunch was a salad with sour cream chipotle dressing , vinegar, macadamia oil and 3 ounces of Kielbasa sausage. Supper was 3 ounces of baked haddock with butter and lemon olive oil with 7 spears of roasted asparagus. I also had 3 ounces of V-8 juice (3.5 grams carbs) at the beginning of the supper meal thinking that it might get the insulin going faster.
See full chart in Google Drive here
Normally, I test before and after a meal. Sometimes only after the meal. I was making an assumption that my blood sugar would rise mostly the first hour to 45 minutes and then start coming down. When I usually do my post meal test at 2-1/2 hours it is around 105-115 or so. Sometimes it is lower, which is nice!
What I didn't realize is that my blood sugar is only first peaking at the 2 hour mark! This was shocking to me! When I test at 2-1/2 hours I am only just beginning to come down from my "high". Granted my peak is still below 130 which is certainly not anything to be concerned about but this whole experiment now leaves me with more questions to be answered! After both meals my blood sugar didn't come down to a "normal" range below 100 mg/dl (5.5 mmol) for over four hours!
What does this tell me? Well, I guess I am diabetic for one! I knew that already! (smirk) I show a very slow and impaired secondary insulin response. I also wonder why it seemed like there was no 1st phase insulin response to the meals. Is it because it took that long for my pancreas to recognize that I ate carbs? I don't have the answers to these questions so on to more research!