Diana Florescu

In 2026, you can track your sleep to the minute, your heart rate continuously, and your blood oxygen in real time. With wearables, we have built a remarkable instrument panel for the human body. But left one critical system completely dark. The gut influences your immune function, metabolism, mood, and long-term disease risk, and the U.S. gut health market generates an estimated $15.8 billion annually. And yet it has no tool that tells you, daily, whether any of it is working.