Delhi, December 19, 2024 : While your fitness tracker helps you monitor steps and heart rate, new research suggests it could also expose you to harmful chemicals. Scientists have found that several popular smartwatch bands contain significant levels of PFHxA (perfluorohexanoic acid), a chemical that can be absorbed through the skin.
In a detailed study of 22 watch bands from various brands and price ranges, researchers discovered that many bands marketed as containing “fluoroelastomers” – a synthetic rubber designed to resist sweat and oils – had significant levels of PFHxA. This raises concerns as approximately 21% of Americans wear smartwatches or fitness trackers for over 11 hours daily.
Smartwatch Bands and PFAS Exposure
Graham Peaslee, the study’s corresponding author, emphasized the importance of these findings, stating, “This discovery stands out because of the very high concentrations of one type of forever chemical found in items that are in prolonged contact with our skin.” The research revealed that all 13 bands labelled as fluoroelastomers, and even two unlabelled ones, contained significant fluorine, suggesting that such materials may be more common in smartwatch bands than advertised.
PFHxA belongs to the broader family of PFAS (per- and polyfluoroalkyl substances), often referred to as “forever chemicals” due to their persistence in the environment and human body. While PFAS are commonly found in non-stick cookware, food packaging, and cosmetics, their presence in smartwatch bands, which are worn directly on the skin, creates a unique exposure risk.
Health Risks and Recommendations
The study highlighted that watch bands priced above $30 often contained higher levels of PFHxA, exceeding 1,000 parts per billion (ppb) and, in some cases, reaching over 16,000 ppb. Comparatively, cheaper bands under $15 were free of these chemicals. Regulatory bodies such as the U.S. EPA and the EU are increasingly addressing PFHxA concerns due to its potential health risks, including effects on the liver, blood, and endocrine system.
The research is particularly concerning for those using smartwatch bands during sports or fitness activities, as sweat can enhance PFHxA absorption through the skin. Lead author Alyssa Wicks advises consumers to carefully read product labels and avoid bands containing fluoroelastomers if opting for pricier options. Instead, researchers recommend using lower-cost silicone wristbands.
Summary: This study underscores the potential risks of “forever chemicals” in smartwatch bands. Consumers should consider avoiding bands made with fluoroelastomers and opt for safer alternatives like silicone to minimize exposure.