A new research suggests that the brands and straps used in smart watches and fitness trackers contain PFAS (Perfluoroalkyl and Polyfluoroalkyl Substances), also known as “forever chemicals”, which researchers warn may be absorbed into the skin.

Researchers from the University of Notre Dame published a study in Environmental Science and Technology. The team tested 22 bands from smart watches at different price points that are mostly available in the United States.

“The most remarkable thing we found in this study was the very high concentrations of just one PFAS — there were some samples above 1,000 parts per billion of PFHxA, which is much higher than most PFAS we have seen in consumer products,” said Graham Peaslee, co-author of the study.

As per the researchers, the problem comes from the fluoroelastomer material, which made the bands oil and sweat-resistant.

15 of the 22 bands tested had a high percentage of total fluorine concentrations, and contained PFHxA (perfluorohexanoic acid), albeit the researchers didn’t name the brands of the bands they tested.

Previous research reveals that as much as 60% of PFAS may be absorbed into the skin. What could be worse is that the absorption is increased with sweat, which is alarming since smart watches and fitness trackers are typically designed to be worn during workouts.

The report said that PFAS exposure is linked to different possible health issues. That includes increased risk of cancer, metabolism disruption, childhood obesity, and impairment of the immune system.

Via: People

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