Does anyone know of a way to test blood glucose without a pinprick? I'm open to commercial products (perhaps optical?) or ways to estimate it based on other observable factors. I'm not diabetic, so I don't need the accuracy that a normal glucose meter offers.
Some background to put this question in the context of fitness: Blood glucose, while usually considered in the context of diabetes, is directly correlated to insulin efficiency - or in too many cases, insulin resistance (inefficiency). Because insulin is the primary mechanism by which fat is stored, I don't believe it is possible to design an effective long-term weight management strategy without accounting for your own body's utilization of insulin. This is the hormonal basis of low-carb diets, slow-carb diets, etc.
I believe that, combined with detailed logs of sleep, diet, and exercise, measuring blood glucose on a frequent basis can provide information that will help to understand the impact on my personal physiology of these activities as they pertain to weight management; it's another tool to be used in conjunction with the scale and the measuring tape.