The promise of personalized nutrition is seductive: eat what your body needs, guided by data rather than guesswork. What began with biohackers tracking blood sugar has evolved into a booming industry of glucose monitors, microbiome tests, and AI-driven advice that claims to tailor diets to each individual. In this episode, we explore how these technologies work, why early studies suggest real benefits for weight loss and energy, and why most health apps still fail at the hardest part—keeping people engaged. As companies race to turn streams of personal data into simple, sustainable habits, the story asks whether personalized health tech can truly change behavior, or whether knowing more about our bodies still isn’t enough to make us act differently.

https://www.economist.com/technology-quarterly/2022/05/02/apps-interpreting-data-from-wearable-devices-are-helping-people-to-live-better