The study highlights the significant environmental impact of these increasingly popular health tools. Researchers found that the printed circuit board, which acts as the device's brain, accounts for 70% of its carbon footprint, primarily due to the intensive mining and manufacturing processes required for its production. This is in contrast to the plastic components, which are often perceived as the primary environmental concern. The projected e-waste could also result in 100 million tons of carbon dioxide emissions over the same period.

"When these devices become obsolete, they contribute to a growing stream of electronic waste, posing risks to both human health and the environment," stated one of the study's co-authors. The researchers suggest two potential solutions to mitigate this environmental impact: utilizing more common metals like copper in chip development instead of rare minerals such as gold, and designing devices with modular components that allow for the reuse of the circuit board while replacing the outer casing.

The findings come as tech companies are showcasing the latest wearable health devices at CES 2026 in Las Vegas, including advanced glucose monitors, blood pressure trackers, and fitness trackers. These devices offer continuous monitoring of vital health metrics, providing valuable data for both patients and healthcare providers. For example, continuous glucose monitors (CGMs) allow individuals with diabetes to track their blood sugar levels in real-time, enabling more effective management of their condition. Similarly, blood pressure trackers can help individuals monitor their cardiovascular health and detect potential issues early on.

However, the environmental cost of these advancements is a growing concern. Experts emphasize the need for sustainable design and manufacturing practices to minimize the negative impact of wearable health technology. "The healthcare industry has a responsibility to prioritize environmental sustainability alongside patient care," said Dr. Emily Carter, an environmental health specialist at the University of California, Los Angeles, who was not involved in the study. "This research provides valuable insights into the specific areas where improvements can be made."

The study's authors hope that their findings will encourage manufacturers to adopt more sustainable practices in the production of wearable health devices. They also call for greater consumer awareness of the environmental impact of these devices and the importance of proper disposal and recycling. The researchers plan to further investigate the feasibility and cost-effectiveness of the proposed solutions, aiming to provide practical guidance for the industry.