Apple, the company quite a few folks love to hate is on to something. I first heard about this about 2 months ago. It seems they've been working on a non invasive way to monitor blood sugar levels via the iWatch. Read more below...

https://qz.com/958033/apple-appl-has-a-secret-glucose-monitoring-device-project-to-help-manage-diabetes-through-the-apple-watch/