UV light nail polish dryers can cause cancer, new study shows
A new study has
shown that ultra-violet (UV) light can kill cells and cause mutations that are
typically seen in skin cancer.
The study, which
was conducted by the University of California San Diego and the University of
Pittsburgh in the United States, revealed that UV light in the machines
produces radiation four times stronger than that emitted by the sun.
The study analyzed
cells into two different conditions of UV exposure; cells with acute exposure
had 20-minute sessions under the UV dryers with an hour break between, while
those with chronic exposure had 20-minute sessions under the UV dryers for 3 consecutive
days.
The researchers
found that the 20-minute session of exposure to the UV dryers resulted in 20 to
30 per cent cell death, while three consecutive
20-minutes sessions of exposure resulted in 65 to 70 per cent cell death.
In the remaining
cells, the exposure resulted in mutations that are typically seen in skin
cancer.
The study authors
also noted that many cases of rare cancers developing in fingers are from
people who frequently get gel manicures using UV nail polish dryers, like
pageant contestants and estheticians.
Ludmil Alexandrov, a bioengineering professor at UC San
Diego and one of the study authors, said in a statement that: "We saw
multiple things: first, we saw that DNA gets damaged. We also saw that some of
the DNA damage does not get repaired over time, and it does lead to mutations
after every exposure with a UV-nail polish dryer.”
“Lastly, we saw that exposure may cause mitochondrial
dysfunction, which may also result in additional mutations. We looked at
patients with skin cancers, and we see the exact same patterns of mutations in
these patients that were seen in the irradiated cells.”
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