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Eating a diet rich in leafy green
vegetables can cut the risk of colon cancer by nearly half. Researchers
at Liverpool University found that a daily serving of broccoli, cabbage,
lettuce and sprouts, can reduce the cancer risk by 46%. Colon cancer
is responsible for around 20,000 deaths a year in the UK. The leafy
green vegetables contain fibre rich in the sugar galactose, which
scientists believe could help prevent proteins called lectins from
binding to the lining of the colon and causing damage.
"This study provides important evidence that
the association between diet and colon cancer is mediated via specific
food components rather than just by a general effect of fibre."
Professor Jonathan Rhodes
Diet
The study, sponsored by North West Cancer Research
Fund, studied 1,000 people, half of whom had colon cancer. They
quizzed people about their diet and found that those without the
colon problems ate more of the vegetables. Professor Jonathan Rhodes,
who led the research said:
"The stories about the benefits of a high fibre diet that have
been circulating for years have typically oversimplified the situation
so it is not surprising that there was confusion and contradictory
reports.
"This study provides important evidence that
the association between diet and colon cancer is mediated via specific
food components rather than just by a general effect of fibre."
The report, published in Gastroenterology, also highlighted
the harmful effects of a diet too high in calories and red meat.
It also extolled the positive benefits of regular
exercise.
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