Poor diet link to cancer confirmed
Dr Tim Key and colleagues at the Cancer Research UK Epidemiology Unit at
Oxford University reviewed previous research on possible links between diet
and cancer.
They found that obesity increases the risk of cancers in the food pipe, bowel,
womb and kidney – and that large quantities of alcohol can cause cancers of
the oral cavity, throat and liver, and a small increase in the risk of breast
cancer.
Results also suggest that the damaging effects of an unhealthy diet extend
beyond those living in developed nations – researchers found such effects
could be responsible for as many as 20 per cent of cancers in developing
countries.
But while researchers have identified diet’s role in cancer development,
they say further studies are needed to pinpoint the healthiest eating
patterns.
Dr Key says that, despite extensive research during the last 30 years, few
specific dietary determinants of cancer risk have been established, even for
cancers such as colorectal cancer, for which most researchers agree that diet
probably has important effects. But the results of existing large prospective
studies and controlled trials should substantially advance understanding of
the role of diet in cancer development during the next few years.
Until then, people are advised to eat a balanced diet with lots of fruit and
vegetables, and avoid obesity.
“At present, prudent advice is to maintain a healthy weight, restrict
alcohol consumption, and select a conventionally balanced diet ensuring an
adequate intake of fruit, vegetables and cereals,” says Dr Key.
Sir Paul Nurse, chief executive at Cancer Research UK, says, “Getting people
to give up smoking continues to be the major issue in preventing cancer, but
for non-smokers it’s becoming clear that diet is a key factor in reducing
risk.”
Source: Cancer Research UK
© HMG Worldwide 2002
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