Wearable health devices could generate a million tons of e-waste by 2050

At the bustling CES 2026 in Las Vegas, tech giants are showcasing their latest innovations in wearable health technology, including glucose monitors and fitness trackers. However, a significant environmental concern lurks behind these advancements, one that is often overshadowed by the excitement of new gadgets. A recent study conducted by researchers from Cornell University and the University of Chicago highlights a potentially alarming future: by 2050, the demand for health wearables could soar to 2 billion units annually, a staggering increase of 42 times compared to current figures. If manufacturing practices remain unchanged, this surge could result in over a million tons of electronic waste and an astounding 100 million tons of carbon dioxide emissions. What’s particularly surprising is that the primary culprit of this environmental impact isn't the plastic components. The research, published in Nature, reveals that the printed circuit board—essentially the device's brain—contributes to 70% of its carbon footprint. This is largely due to the intensive mining and manufacturing processes involved in producing these components. To combat this looming crisis, the researchers suggest two key strategies: first, the development of chips made from more common metals like copper rather than rare materials such as gold; second, the design of modular devices that allow for the reuse of circuit boards while only replacing the outer casing. As one of the study’s co-authors pointed out, “When these devices are deployed at a global scale, small design choices add up quickly.” With such profound implications for the environment, these considerations are crucial as consumers and manufacturers alike navigate the future of wearable technology.