Flavonoids and breast cancer risk in Italy

Cristina Bosetti, Luana Spertini, Maria Parpinel, Patrizia Gnagnarella, Pagona Lagiou, Eva Negri, Silvia Franceschi, Maurizio Montella, Julie Peterson, Johanna Dwyer, Attilio Giacosa, Carlo La Vecchia

Research output: Contribution to journalArticlepeer-review

Abstract

Few epidemiologic studies have investigated the potential relation between flavonoids and breast cancer risk. We have applied recently published data on the composition of foods and beverages in terms of six principal classes of flavonoids (i.e., flavanones, flavan-3-ols, flavonols, flavones, anthocyanidines, and isoflavones) on dietary information collected in a large-case control study of breast cancer conducted in Italy between 1991 and 1994. The study included 2,569 women with incident, histologically confirmed breast cancer, and 2,588 hospital controls. Odds ratios (OR) and 95% confidence intervals were estimated by multiple logistic regression models. After allowance for major confounding factors and energy intake, a reduced risk of breast cancer was found for increasing intake of flavones (OR, 0.81, for the highest versus the lowest quintile; P-trend, 0.02), and flavonols (OR, 0.80; P-trend, 0.06). No significant association was found for other flavonoids, including flavanones (OR, 0.95), flavan-3-ols (OR, 0.86), anthocyanidins (OR, 1.09), as well as for isoflavones (OR, 1.05). The findings of this large study of an inverse association between flavones and breast cancer risk confirm the results of a Greek study.

Original languageEnglish
Pages (from-to)805-808
Number of pages4
JournalCancer Epidemiology Biomarkers and Prevention
Volume14
Issue number4
DOIs
Publication statusPublished - Apr 2005

ASJC Scopus subject areas

  • Epidemiology
  • Oncology

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