As a Diabetic I would pay a stupid amount of money for an Apple Watch that can monitor Blood Glucose. https://www.bloomberg.com/news/articles/2023-02-22/apple-watch-blood-glucose-monitor-could-revolutionize-diabetes-care-aapl
Apple Watch Blood Glucose Monitor Could Revolutionize Diabetes Care (AAPL)

Apple Inc. has a moonshot-style project underway that dates back to the Steve Jobs era: noninvasive and continuous blood glucose monitoring.

Bloomberg