Dietary consumption of phytochemicals and breast cancer risk in Mexican women

Luisa Torres-Sanchez, Marcia Galvan-Portillo, Mary S. Wolff, Lizbeth Lopez-Carrillo

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Objective: To perform an evaluation of selected phytochemicals intake and breast cancer (BC) risk in Mexican women. Design: We conducted hospital-based case-control study. Setting: Mexico City between 1994 and 1996. Subjects: A total of 141 histologically confirmed BC cases were age-matched (±3 years) to an equal number of hospital controls. The reproductive history of each woman was obtained by direct interview. The dietary consumption of flavonols, flavones, flavan-3-ols, cinnamic acid, lariciresinol, pinoresinol, secoisolariciresinol, matairesinol and coumestrol was obtained by means of a validated FFQ. Results: Among postmenopausal women, high dietary intake of flavonols and flavones was associated with a significant reduction of BC risk (high v. low tertile: OR = 0.21, 95% CI 0.07, 0.60, P for trend = 0.004 and OR = 0.29, 95% CI 0.10, 0.82, P for trend = 0.025, respectively); consumption of lignans (lariciresinol and pinoresinol) showed a similar effect, but only among premenopausal women (high v. low tertile: OR = 0.32, 95% CI 0.10, 0.99, P for trend = 0.051 and OR = 0.19, 95% CI 0.06, 0.62, P for trend = 0.006, respectively). Conclusions: Our results support a protective role of specific dietary phytochemicals in BC risk by menopausal status, independent of other reproductive factors.

Original languageEnglish
Pages (from-to)825-831
Number of pages7
JournalPublic Health Nutrition
Volume12
Issue number6
DOIs
StatePublished - Jun 2009

Keywords

  • Breast cancer
  • Diet
  • Flavones
  • Flavonols
  • Lignans
  • Mexico
  • Phyto-oestrogens

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