A poll found that less than a third of people in Britain were aware of the cancer risk of eating large amounts of red and processed meat.
Previous research has found evidence of a link between bowel cancer and heavy concentrations of certain types of meat in the diet.
One study, which followed 500,000 from across Europe over a decade, suggested that eating a lot of meat could increase the risk by up to a third.
The European Prospective Investigation into Cancer and Nutrition (EPIC) reported in 2005 that people who ate two portions of red or processed meat a day were as much as a third more likely to develop bowel cancer than those who had only one a week or less.
The World Cancer Research Fund (WCRF) advocates a maximum of no more than 17.6 oz of cooked red meat a week per person.
Marilyn Gentry, chief executive of the WCRF, told the Daily Express: "It is a concern if two thirds of people are not aware of the link because the evidence is strong.
"That is why experts' advice is the best amount of processed meat to eat is none at all.
"But if people don't know about the link between bowel cancer and processed meat they are not in a position to make informed choices.
" There's still a lot of work to be done to spread the message about how people can reduce the risk."
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