Google announced a wrist-based feature that estimates whether a person's insulin resistance is trending higher or lower, and the company has been explicit about what the tool is not. It does not measure blood sugar, nor does it produce a glucose number.
The distinction matters because it is the one most likely to be lost. Announced at the company's August 12 product event, Insulin Resistance Trends arrives as part of a health suite called Health Guardian for eligible Pixel watches and Fitbit devices, in a market where consumers have spent years hearing that noninvasive glucose monitoring is coming to a smartwatch.
