I know some people who can't even wear a fitbit to bed because it causes anxiety. I am open to the idea of wearing a device that monitors blood glucose if (1) it could accurately measure blood glucose, and (2) the information it provides me passively/via notification can help me to make significant improvements in my health.

For example, if I could make my liver 20% healthier by eating more moderate portions of bread in a meal where I plan to eat dessert, it would be useful to know that.

On the other hand, I don't think I have to wear the device forever to gain this information. I could learn about what makes my blood glucose spike after a month or two, and then just carry that knowledge with me going forward.