UPDATE: New research from the University of Notre Dame reveals alarming levels of a potentially dangerous chemical, PFHxA, in smartwatch bands, raising urgent health concerns. Published in the American Chemical Society at the end of 2024, the study indicates that these bands could pose a hidden public health risk as this chemical may be absorbed through the skin.
Researchers, led by Graham Peaslee, found that smartwatch bands were leaching significant amounts of PFHxA, a member of the notorious group known as “forever chemicals.” “We found that it was almost entirely PFHxA leaching out of the wristbands,” Peaslee stated. This revelation is particularly concerning as PFHxA is associated with various health risks, including impacts on thyroid and liver function, and is categorized as a Group 1 carcinogen by the International Agency for Research on Cancer (IARC).
The implications are significant, with approximately one in five Americans using smartwatches or fitness trackers, according to a Pew Research survey. As consumers increasingly rely on these devices, the potential for harmful exposure grows. While traditional watch bands utilize materials like stainless steel and leather, smartwatch bands predominantly consist of synthetic materials that may harbor these toxic substances.
Current regulations in the U.S. lack comprehensive oversight on PFHxA, with only Michigan establishing a maximum contaminant level for drinking water. In contrast, the European Commission is moving to restrict PFHxA use due to health risks. “This is a common replacement for PFOA, which has many documented health effects,” warned Phil Brown, director of the Social Science Environmental Health Research Institute.
In response to the study, major tech companies have defended their products. A Google spokesperson emphasized that “Pixel Watch bands meet industry standards with regard to PFAS” and affirmed their commitment to minimizing these chemicals. Meanwhile, Apple and Samsung face lawsuits alleging deceptive marketing practices regarding PFAS in their products. A lawsuit against Apple claims that the company misled consumers about the safety of its products, while a similar action has been filed against Samsung.
Experts are divided on the health risks associated with PFHxA exposure through skin contact. Although some studies suggest skin absorption is possible, the extent remains unclear. Christina Remucal, a professor at the University of Wisconsin-Madison, noted, “The concentrations of PFHxA reported in the study are quite high,” raising concerns about prolonged exposure as many users wear these devices throughout their waking hours.
As investigation continues, experts recommend consumers consider switching to PFAS-free or silicone bands. However, some researchers, like Christy Haynes, caution against panic, stating that ingestion and inhalation present more significant exposure risks than skin absorption. “If I had this smartwatch and the wristband was damaged, I would replace it, but I wouldn’t think about it much beyond that,” Haynes commented.
With ongoing studies expected to shed more light on the health implications of PFHxA, consumers are advised to remain vigilant about the products they use daily. The surprising findings from the University of Notre Dame highlight an urgent need for scrutiny in the smartwatch industry. Keep an eye on this developing story as it could impact millions of users worldwide.
