A heart attack occurs every 40 seconds in the US, making screening to gauge risk vital. But there’s a big problem with the two screening tools doctors depend on: They missed half of all first heart attacks in people screened just days earlier. Here’s why…

A checkup isn’t complete without a blood draw. And though it provides a clearer picture of our health, most of us don’t enjoy the experience. Imagine if there was a way to get all that information without a needle stick…