Hundred Health and BellSant Become One to Make Precision Health Personal, Proactive, and Always On

Before Tyler Smith founded Hundred Health, he was leading SkySlope, a real estate software firm he built and later sold a majority stake in to Fidelity. Despite his success, Smith found himself confronting a more personal question: how well was he aging? “I was turning 39, and my wife and I were having our first child a little bit later in life,” Smith said in an interview. “I began thinking about life a little differently, like, how old is my child when they’re driving? And how old is my daughter going to be when she’s graduating?” Prompted by that reflection, Smith took a biological age test. Though he exercised regularly and maintained a healthy diet, the results were unexpected—his biological age came back at 47. “I had more data on my businesses—arguably ev