医学复试口语:医学补充口语阅读：红肉与直结肠癌有关

long-term high consumption of red and processed meat may increase the risk of cancer in the colon and rectum, according to research.

　　us researchers followed a cohort of 148,610 adults, with an average age of 63 years from 1982.

　　participants completed questionnaires at 10-yearly intervals regarding their diet, exercise, medical history and other lifestyle habits.

　　by 2001, there were 1667 new cases of colorectal cancer in the group, according to the report published in the journal of the american medical association.

　　the participants who consistently ate the most red meat and processed meats had a 50 per cent higher rate of colorectal cancer than those who ate the least red or processed meat.

　　prolonged high consumption of poultry and fish was marginally associated with about a 25 percent lower risk of colon cancer, but not rectal cancer.

　　the researchers conclude that: 'our results demonstrate the potential value of examining long-term meat consumption in assessing cancer risk and strengthen the evidence that prolonged high consumption of red and processed meat may increase the risk of cancer in the distal portion of the large intestine.'

　　研究表明，长期大量食用红肉及肉制品会增加患直肠、结肠癌危险。

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