Plant foods, fiber, and rectal cancer

Auteur(s) :
Slattery ML., Curtin KP., Edwards SL., Schaffer DM.
Date :
Fév, 2004
Source(s) :
Adresse :
Reprints: SLATTERY ML,UNIV UTAH,HLTH RES CTR;375 CHIPETA WAY; SALT LAKE CITY UT 84108, USA. Research Institutions: Univ Utah, Hlth Res Ctr, Salt Lake City, UT 84108 USA. Kaiser Permanente Med Res, Oakland, CA USA.

Sommaire de l'article

Background: Associations between colon and rectal cancer and intakes of vegetables, other plant foods, and fiber have stimulated much debate.
Objective: We examined the association between rectal cancer and plant food and fiber intakes.

Design: Data from 952 incident cases of rectal cancer were compared with data from 1205 population-based controls living in Utah or enrolled in the Kaiser Permanente Medical Care Program in northern California

Results: Rectal cancer was inversely associated with intakes of vegetables (odds ratio: 0.72; 95% Cl: 0.54, 0.98), fruit (0.73; 0.53, 0.99), and whole-grain products (0.69; 0.51, 0.94), whereas a high intake of refined-grain products was directly associated with an increased risk of rectal cancer (1.42; 1.04, 1.92). Similarly, relative to low fiber intakes, high intakes of dietary fiber reduced the risk of rectal cancer (0.54; 0.37, 0.78). The reduced risk of rectal cancer associated with vegetable (0.48; 0.29, 0.80), fruit (0.63; 0.38, 1.06), and fiber (0.40; 0.22, 0.71) intakes was strongest for persons who received the diagnosis after age 65 y. A threshold effect at approximate to5 servings of vegetables/d was needed to see a reduced risk of rectal cancer.

Conclusions: The results suggest that plant foods may be important in the etiology of rectal cancer in both men and women. Age at diagnosis appears to play an important role in the association.

Source : Pubmed