2016-07-13

Sleep, Insulin, And Wearable Tech

I woke up with extremely high blood sugar yesterday morning, which I fought to reduce all day long, to only partial satisfaction. And yet, there didn't seem to be any obvious reason why this would have been so. I had a very healthy, low-carbohydrate dinner the night before, took the appropriate dose of insulin, took my Levemir, had a really nice, low-stress evening full of great conversation with my spouse, and headed to bed at a reasonable hour. I slept through the night and had a nice dream.

What happened? Well, this happened:

Output from my Microsoft Health sleep dashboard

On this graph, orange represents time spent awake after clicking the "sleep" button on my Microsoft Band 2. Light blue represents light sleep, while dark blue represents deep sleep. As you can see, on Thursday I got plenty of sleep, but absolutely no deep, restful sleep whatsoever.

As we diabetics know, a lack of sleep causes the body to produce cortisol, which both raises blood sugar and increases insulin resistance. It's a double-whammy of increased blood glucose levels and a reduced ability to bring them down. My blood sugar was high all day yesterday, and now I know why.

To better manage my blood sugar, I should look into how to get the most out of the sleep I get, but that's a huge problem. A more immediate solution would be to simply check the sleep output from Microsoft Health and adjust my basal insulin intake accordingly: Less sleep should mean more insulin to get me through the day.

News pieces are still coming out about some of the design flaws in the Microsoft Band 2, and almost all of them are serious problems with the physical durability of the product. This is a real shame, because, as I have written elsewhere, the actual functionality of the Band 2 is basically the best of the best. By pure functionality, the Band 2 wins on virtually every metric you can throw at it. This thing can do almost everything you'd ever want a wearable fitness watch to do. The fact that such a powerful device breaks so easily is very disappointing. I guess there are reasons to look forward to the next generation of fitness trackers, after all.