From: gts (gts_2000@yahoo.com)
Date: Mon May 05 2003 - 11:49:48 MDT
This study looks at the effects on colon and rectal cancer of fruits,
vegetables and grains. The researchers suggest that, in women, the
consumption of grains actually blocks some of the cancer-protective effects
of fruits and vegetables.
ABSTRACT:
Plant foods and differences between colon and rectal cancers.
Eur J Cancer Prev 2002 Aug;11(4):369-75 (ISSN: 0959-8278)
Deneo-Pellegrini H; Boffetta P; De Stefani E; Ronco A; Brennan P;
Mendilaharsu M
Registro Nacional de Cancer, Avda. Brasil 3080 dep. 402, Montevideo,
Uruguay.
A case-control study on plant food intake and its role in the risk of colon
and rectal cancers was carried out in Montevideo, Uruguay. Four hundred and
eighty-four (484) cases of colorectal cancer and 1452 controls were
frequency matched on age, sex, residence and urban/rural status. Among
cases, 260 patients had colon cancer whereas 224 had rectal tumours.
Controls had non-neoplastic conditions. Both cases and controls were
interviewed in the four major hospitals in Montevideo shortly after
admittance for diagnosis or treatment. The questionnaire included a section
on frequency of foods, which included 64 items, in particular, queries on 18
vegetables, 10 fruits and 6 cereal dishes were included. Thus, the amount of
plant foods consumed was complete and included the main plant foods in the
Uruguayan diet. The analysis showed that rectal cancer displayed inverse
associations with total plant foods, total vegetables, cooked vegetables,
potatoes and legumes. When data were stratified by tumour site and sex, only
men showed a protective effect of plant foods (odds ratio (OR) of rectal
cancer for men 0.4, 95% confidence interval (CI) 0.2-0.7). In contrast,
women with rectal carcinoma were not associated with plant food intake. It
can be concluded that plant foods are protective factors for men afflicted
with colorectal cancer but that plant food intake is not associated with
risk in women. This is, at least in part, due to the high risk associated
with bread intake in this gender.
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