Fitbit upgrades sleep AI
Fitbit is rolling out ‘significant updates’ to its Personal Health Coach that promise a ~15% boost to sleep‑tracking accuracy for Premium subscribers and an AI Health Coach that can read users’ medical records for deeper personalization. (techradar.com) (androidcentral.com)
Google presented the updates at its annual The Check Up health event on March 17, 2026, and detailed them in a Fitbit product post on the Google Blog. (blog.google) Linking of clinical records will enter a Public Preview for U.S. users in April 2026, according to reporting and Fitbit’s rollout notes. (androidcentral.com) Fitbit plans to let users connect provider portals or verify identity through CLEAR to pull in data via partners such as b.well, which Google says has connectivity to millions of providers and health plans. (androidcentral.com) (prnewswire.com) The coach will ingest structured items — lab results, medications and visit history — and produce summarized outputs that can be exported via QR codes or a Smart Health Link for sharing with clinicians or family. (digitaltrends.com) Google and Fitbit emphasize storage and usage controls, stating connected medical data will be held securely and not used for advertising, while the coach will not provide formal diagnoses and will prompt users to consult clinicians for medical decisions. (digitaltrends.com) (zdnet.com) The sleep model update was trained on more diverse datasets to better separate “trying to sleep” from actual sleep, capture interruptions, naps and stage transitions, and Fitbit says the revised Sleep Score and tracking will appear for Public Preview users over the next few days to weeks. (blog.google) Fitbit tied the coach improvements to active metabolic research, citing a Nature paper that used wearable signals and routine blood biomarkers (WEAR‑ME, n=1,165) to predict insulin resistance with an AUROC ~0.80 that rose to ~0.88 when pretrained wearable models were added. (nature.com) (research.google) The company also flagged near-term additions including continuous‑glucose‑monitor support via Health Connect and a “Get care now” pathway, and noted that the Personal Health Coach is powered by Google’s Gemini stack after earlier preview launches in October 2025 and broader preview expansion in February 2026. (androidcentral.com) (blog.google)
