(WSJ) – Health trackers can now alert you to shifts you can’t feel. Doctors warn the data might give you anxiety—or a false sense of security.

Nearly half of U.S. adults—over 119 million people—have high blood pressure, according to the federal Centers for Disease Control and Prevention. Wouldn’t it be convenient if a wearable health tracker could take measurements without the panic-inducing arm squeeze?

Several devices have recently launched insights into blood-pressure trends, including Hilo, Whoop, Oura Ring, Pixel Watch and Apple Watch.

As someone with a family history of hypertension, I wanted to know if the cuffless tech could help me, or if they’re just pricey, anxiety-inducing doodads. The devices provided a good sense of my long-term trends, but they can’t entirely replace the arm squeeze—at least not yet. (Read More)