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e-cigarettes damaging lungs?
Monday September 03, 2012 12:52:55 PM,
IANS
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Athens: Electronic
cigarettes, touted as a safer substitute for cigarettes, could
turn out to be a remedy worse than the disease and end up damaging
the lungs, says a new study.
Electronic or e-cigarettes are devices that deliver nicotine
through a vapour, rather than smoke. No combustion is involved but
the nicotine is still derived from tobacco. However, there has
been little scientific evidence to support claims either on its
safety or efficiency.
Researchers from the University of Athens, Greece, aimed to
investigate the short-term effects of using e-cigarettes on
different people, including people without any known health
problems and smokers with and without existing lung conditions.
The study included a group of people who had never smoked and 24
smokers, 11 with normal lung function and 13 people with either
chronic obstructive pulmonary disease (COPD) or asthma, according
to an Athens statement.
Each person used an electronic cigarette for 10 minutes. The
researchers then measured their airway resistance using a number
of tests, including a spirometry test.
The results showed that for all people included in the study, the
e-cigarette caused an immediate increase in airway resistance,
lasting for 10 minutes. In healthy subjects (never smokers) there
was a statistically significant increase in airway resistance from
a mean average of 182 percent to 206 percent.
Christina Gratziou, professor and study author from Athens, said:
"We do not yet know whether unapproved nicotine delivery products,
such as e-cigarettes, are safer than normal cigarettes, despite
marketing claims that they are less harmful. This research helps
us to understand how these products could be potentially harmful.
"We found an immediate rise in airway resistance in our group of
participants, which suggests e-cigarettes can cause immediate harm
after smoking the device. More research is needed to understand
whether this harm also has lasting effects in the long-term,"
added Gratziou.
These findings were presented on Sunday at the European
Respiratory Society's Annual Congress in Vienna, Austria.
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