According to the FDA, any smartwatch or ring that claims to measure blood sugar levels is a lie.
I tried a non-invasive blood glucose meter. Miracle cure or scam?
For people with diabetes, keeping a close eye on their blood glucose levels is essential, but you can’t do that from your wrist unless that watch is connected to something that can actually sample your blood. As much as smartwatch makers would like to solve this mystery, it’s still impossible. This has led to an increase in scams and deception, so much so that the FDA issued a safety notice with a title that leaves no room for doubt: “Do not use smartwatches or smart rings to measure blood glucose levels.”
"It appears that most of the devices currently on the market are simply scams. It is possible that a few of these devices work, but they have not been thoroughly tested. The consequences of an incorrect reading can be false reassurance to a patient with abnormally high or low blood sugar," Dr. Jared Ross, the president of EMSEC, LLC and a board-certified emergency physician and assistant professor, told Lifewire via email.
For people with diabetes, accurate blood glucose monitoring is essential to help manage medication use and more.
