A.
All subjects were free of cancer at enrollment between 1992 and 1998, but (53) an average follow-up of almost 5 years 1,329 bowel cancers had been reported.
B.
The subsequent ysis, published in the Journal of the National Cancer Institute, confirms the long-held suspicion (54) high intakes (纳入量) of red meat are associated with increased bowel (55) risk.After taking into consideration factors like age, , height, weight, energy intake, physical activity, smoking, and alcohol consumption, the investigators found that bowel cancer was (56) with intake of red and processed meat but not chicken.
C.
Risk of bowel cancer dropped with increasing intake of fish. Eating more than 80 grams a day of fish was associated (57) a 31 percent reduction in risk compared with eating less than 10 grams a (58) .
D.
Subjects with high red meat and low fish intake were at 63 percent higher risk of bowel cancer compared with subjects with low red meat and high fish (59) . In addition, the risk of developing the disease was increased for (60) people who ate a low fibre diet.
E.
Sheila Bingham, study investigator at the UK’s Medical Research Council nutrition unit, said: "People have suspected for some time that high levels of red and processed meat (61) risk of bowel cancer, but this is one of the largest studies worldwide and the first from Europe of this type to show a (62) relationship."
F.
She added in a statement: "The overall picture is very consistent for red and processed meat and fibre across all the (63) populations studied."
G.
Study coordinator, Elio Riboli, of the World Health Organisation International Agency for Research into Cancer, said: "Other risk factors for () cancer include obesity (肥胖) and lack of physical activity. Smoking and excess alcohol may also play a (65) . These factors were all taken into account in the ysis.\