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Chemical found in
plastic packaging likely causes cancer
By Kay Vandette
Earth.com staff writer
After new research, the World Health
Organization (WHO) has changed the status of styrene, a common chemical used in
plastic packaging and containers, from “possibly carcinogenic” to “probably
carcinogenic.”
It took 40 years for researchers to confirm
that exposure to styrene can cause some cancers and now, the new study also
reveals that people who work with plastic and rubber are the most at risk.
The study, which was the largest of its kind,
was conducted by a team of international researchers and commissioned by the
International Agency for Research on Cancer.
The results were published in the journal
Epidemiology.
Styrene is common in plastic packagings like
disposable coffee cups and to-go containers.
The chemical is used to make latex and
synthetic rubber and most people have had at least some exposure to styrene
during their lives.
The International Agency for Research on
Cancer asked 23 researchers to evaluate styrene’s risk using recent human
epidemiological research, animal studies, and data from a registry of more than
70,000 Danish workers from the plastic industry.
In the 1970s, scientists noticed an alarming
rise in leukemia cases among workers in the American synthetic rubber industry.
However, it was unclear if this rise in
cancer was caused by styrene exposure or another chemical component in the
rubber making process.
In response, Danish workers in the plastics
industry were asked to be part of a research project spanning from 1968 to
2011.
After reviewing all the data, the researchers
found that people who work with styrene are two times more likely to get
leukemia and five times more likely to contract sinonasal adenocarcinoma which
is a type of nasal cancer.
“The most recent
styrene study shows the risk of acute myeloid leukemia, a rare form of
leukemia, is doubled. Out of the more than 70,000 people included in the
research project, we found 25 cases of acute myeloid leukemia, where you would
statistically expect to find 10,” said Henrik Kolstad, a professor at Aarhus
University in Denmark in an Arhaus University news release.
Aarhus was part of the team of 23 researchers
involved in the study.
Today, conditions have improved for employees
in the plastic industry, but the study still shows there’s an increased risk of
contracting some cancers associated with exposure to styrene.
Now, thanks to this recent research and the
styrene’s new classification, policies can be made to reflect the risks of
styrene and educate people to avoid exposure.
By
Kay Vandette, Earth.com Staff Writer
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