Continuous glucose monitors (CGMs) allow detailed observation of how foods, supplements like berberine or Metformin, and exercise impact blood glucose levels.

“Nowadays, there are a number of commercially available, continuous glucose monitors, I've tried one of these, it involves putting what's essentially a patch with a little needle that goes into your skin, which is continuing continually, excuse me, monitoring your blood glucose. And you can look at it at an app on your phone, and you can learn a lot that way about how different foods impact the increases in decrease in blood glucose. If you're doing experiments with berberine or Metformin, you can see how those impact your blood glucose. You can see how exercise hit training or otherwise impacts blood glucose.”