There’s been plenty of hope and buzz in the recent years that wearable technology will upend healthcare as we know it. Commercial devices strapped to our persons will—makers promise—empower individuals to monitor and control their own health, plus they’ll help guide the care people receive by medical professionals.

But so far, there’s been a rather noticeable gap between the data we collect on our little devices and better health and healthcare for most. Does your doctor really care about or know what to do with your Fitbit data? Is your Apple Watch making you healthier?

Often, when people use wearables, “they get all excited for about three months, and then they stop looking at them,” precision medicine expert Michael Snyder of Stanford told Ars.