Recently, I have been aggressively monitoring my blood glucose levels and I have noticed a very interesting pattern. On days when I do not eat safe starches, my fasting blood glucose level the next morning is approximately 105. However, when I do eat safe starches (usually a sweet potato, regular potato, or white rice), the next morning my fasting blood glucose level is approximately 95.
So I have been testing this idea by purposefully not eating any safe starches one day and checking my fasting blood glucose level the next morning. Like clockwork, my blood glucose levels are higher the next morning. When I eat safe starches, the fasting reading the next day goes down to 95. I am getting a 10-point drop the next day by eating safe starches. This is a very consistent finding.
Even more curious, on days when I forego the safe starches, I am actually consuming fewer calories than the days when I eat them. My menus have been very consistent across all of these tests (I am trying to eat simple and dull meals, as suggested by Jenny Ruhl and Stephan Guyenet). So if I am eating less food, why are the fasting readings always higher? For purposes of full disclosure, my one hour readings are almost always below 125 and two hour readings are almost always below 100. Not bad for a type II diabetic. The Perfect Health Diet has effectively controlled my disease.
So is the consumption of safe starches actually contributing to lowering my blood glucose levels? That is what it looks like to me.
See my previous entries on safe starches here, here, and here.