Is that measurement accurate? Like, a person starts taking Metformin -> and a few days later the watch detects a drop in insulin resistance?
Insulin sensitivity correlates with obesity, activity, sleep, etc. so it's not impossible that a wearable can give some degree of prediction. I guess it's mostly good motivation to support habits that increase sensitivity (physical activity, low stress).
Any time you see “trends” in a press release you should be very suspicious. It’s a sign that they can’t pass regulatory scrutiny and are trying to apply the research anyway. Your scale cannot measure fat percentage, your Samsung watch cannot measure blood pressure and your Garmin cannot measure VO2Max. These are all things they’d like to be able to do (and “trends” can have some value if they’re used correctly) but they are not the thing itself.
If they are actually able to get an optical measurement which is good enough for MoM or WoW trends, I'd agree it's pretty big even if they can't provide anything precise enough for real time / daily use. Just being able to roughly validate diet changes for women with PCOS could be very impactful and that's the smallest of the 3 populations you called out.
That image also implies that not only does it know trends, but it also has an absolute good/bad value.
I’d love to read more about what this is, and what technical signals / data they’re using.