People are spending billions of dollars tracking themselves: their steps, their blood oxygen saturation, their sleep cycles, their glucose levels. Is any of this data making us healthier? w/ @dwallacewells.bsky.social, Rachael Bedard www.nytimes.com/2026/07/29/o... via @nytimes.com

Opinion | The Silicon Valley Health Trend Making Doctors NervousIs more data about your body actually good for you?www.nytimes.com