Many
of us rely on our running watches daily, using them as
an essential training tool to track pace, distance and
heart rate. You may also use it to keep an eye on your
health, studying your HRV, looking at your training load
to see if you need more rest and potentially even monitoring
your menstrual cycle. However, new research, as reported
in The Guardian, suggests that some of these handy devices
come with an unexpected downside—high levels of
toxic PFAs, also known as “forever chemicals.”
Here’s what you should know about your trusted tracker.
The
study
PFAs are substances used to make products resistant to
water, stains and heat, and have been linked to serious
health risks, including cancer, liver disease and immune
disorders. They are known as “forever” chemicals
because they do not naturally break down. A recent study
from the University of Notre Dame found that 15 out of
22 common smartwatch and fitness tracker bands tested
contained PFAs at levels significantly higher than those
typically found in consumer products.
Why
this matters for runners
Runners are particularly at risk, because sweat may increase
the rate at which PFAs are absorbed through the skin.
Previous research found that up to 60 per cent of certain
PFAs in skin-applied products can be absorbed. Since fitness
watch bands are worn tightly against the skin for prolonged
periods, this could mean a continuous exposure to harmful
chemicals. “The levels detected in the bands were
much higher than most PFAs we have seen in consumer products,”
said Graham Peaslee, a Notre Dame researcher and co-author
of the study. While the exact rate at which these chemicals
are absorbed remains unclear, their persistent nature
means they accumulate in the body over time, raising long-term
health concerns.
Choosing a safer alternative
The study did not name specific brands that tested positive
for PFAs, but it did examine models from well-known companies
such as Apple, Fitbit, Google and Nike. Some brands openly
advertise their use of fluoroelastomer bands—a material
that contains PFAs—while others do not disclose
their presence. Interestingly, Peaslee noted that bands
containing PFAs were often priced higher than those without.
If you’re concerned about exposure, switching to
a silicone band may be a safer choice. “I don’t
need someone to rush to throw away their Christmas gifts,
but next time you buy one, move away from those with PFAs,”
Peaslee advised. As more research emerges, runners should
consider researching their gear choices—not just
for performance, but for long-term health as well.
|
219.jpg)
