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Drinking joins smoking as cancer
risk
London -
Along with smoking and chronic infections, alcohol consumption is an
important cause of several types of cancer, researchers said on
Monday.
Excessive drinking raises the risk of
cancer of the mouth, larynx, oesophagus, liver, colon and breast. It
may also be linked with cancer of the pancreas and lung.
"Alcohol is underestimated as a cause
of cancer in many parts of the world," said Dr Paolo Boffetta of the
International Agency for Research on Cancer (IARC) in Lyon, France.
"A sizeable proportion of cancer
today is due to alcohol intake and this is increasing in many regions,
particularly in east Asia and eastern Europe," he added in an
interview.
Boffetta
and Mia Hashibe, who reviewed research into the link between alcohol
and cancer, found the more alcohol consumed, the higher the risk of
developing cancer.
But they advised people to drink
moderately, rather than give up alcohol completely, because of its
protective benefits against cardiovascular disease.
"Total avoidance of alcohol, although
optimum for cancer control, cannot be recommended in terms of broad
perspective of public health, in particular in countries with high
incidence of cardiovascular disease," Boffetta said in a report in The
Lancet Oncology journal.
Instead, the scientists said men and
women should limit how much alcohol they drink to reap the benefits
but avoid the dangers.
"The most recent version of the
European code against cancer recommends keeping daily consumption to
two drinks for men and one for women," Boffetta noted.
In developed countries in 2000, the
World Health Organisation (WHO) estimates that alcohol caused 185,000
deaths in men and 142,000 in women, but it prevented 71,000 male
deaths and 277,000 female deaths in the same year.
In developing countries, where there
are fewer cases of cardiovascular disease, alcohol was linked with
1.52 million deaths in men and 301,000 in women.
The scientists found that
alcohol-related diseases were a particular problem in central and
Eastern Europe.
"Alcohol is probably the main factor
responsible for increased risk of head and neck cancer recorded in
various countries, particularly in central and east Europe," said
Boffetta.
Exactly how alcohol increases the
odds of developing cancer is not clear but genetic susceptibility is
an important component.
"Given the linear dose-response
relation between alcohol intake and risk of cancer, control of heavy
drinking remains the main target for cancer control," Boffetta added. --
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