A new study reveals that wearable health care electronics, from continuous glucose monitors to ECG patches and blood-pressure trackers, carry a larger environmental footprint than most users realize, especially as global adoption grows. Tech Xplore reports that researchers at the University of Chicago and Cornell University conducted a cradle-to-grave life-cycle assessment of several common wearable devices, finding that each one generates between 1.1 and 6.1 kilograms of carbon dioxide equivalent emissions over its lifetime. With global wearable health tech use projected to increase 42-fold by 2050, potentially reaching nearly 2 billion units annually, the cumulative impact could exceed 3.4 million metric tons of CO₂-equivalent emissions per year.
A surprising insight from the research is that plastic components contribute far less to carbon emissions than expected. The lion’s share of the footprint, over 95% in some devices, stems from printed circuit and semiconductors, which require energy-intensive manufacturing and raw-material processing to produce. For example, a typical continuous glucose monitor’s lifecycle emissions were roughly equivalent to driving a gas-powered car for several miles, underscoring the hidden costs of even small medical gadgets.
The study didn’t just quantify emissions; it also evaluated potential mitigation strategies. Designing devices with modular components so that long-lived circuitry can be reused while high-turnover parts get replaced could reduce per-use emissions by more than 50% in some cases. Substituting critical metals such as gold with less carbon-intensive materials such as copper or aluminum offered significant reductions in both carbon footprint and toxicity. Transitioning manufacturing to renewable energy sources, such as grids dominated by wind or solar power, also cuts emissions by roughly 44–52% in modeled scenarios.
As wearable devices become more integrated into health care and everyday life, this research highlights that sustainability considerations must extend beyond user benefits to include environmental and lifecycle impacts. Designers, manufacturers, and policymakers will need to work on material choices, product architecture, and energy sourcing if the health-tech revolution is to avoid adding to climate change and electronic waste challenges.