A case-control study on colorectal cancer in Belgium. Preliminary results

Preliminary results of a case-control study in two Belgium provinces, involving 1207 cases of colorectal cancer and 3521 population controls are reported. An excess risk of colon cancer was associated with low intake of calories, proteins and lipids. High intake of vitamin B, vitamin C and fibres had a protective effect on both colon and rectal cancer. When foods were examined, most vegetables were found to have protective virtues, noticeable in all subgroups.