Plasma phyto-oestrogens and prostate cancer in the European Prospective Investigation into Cancer and Nutrition

R. C. Travis, E. A. Spencer, N. E. Allen, P. N. Appleby, A. W. Roddam, K. Overvad, N. F. Johnsen, A. Olsen, R. Kaaks, J. Linseisen, H. Boeing, U. Nöthlings, H. B. Bueno-De-Mesquita, M. M. Ros, C. Sacerdote, D. Palli, R. Tumino, F. Berrino, A. Trichopoulou, V. DilisD. Trichopoulos, M. D. Chirlaque, E. Ardanaz, N. Larranaga, C. Gonzalez, L. R. Suárez, M. J. Sánchez, S. Bingham, K. T. Khaw, G. Hallmans, P. Stattin, S. Rinaldi, N. Slimani, M. Jenab, E. Riboli, T. J. Key

Research output: Contribution to journalArticlepeer-review

Abstract

We examined plasma concentrations of phyto-oestrogens in relation to risk for subsequent prostate cancer in a case-control study nested in the European Prospective Investigation into Cancer and Nutrition. Concentrations of isoflavones genistein, daidzein and equol, and that of lignans enterolactone and enterodiol, were measured in plasma samples for 950 prostate cancer cases and 1042 matched control participants. Relative risks (RRs) for prostate cancer in relation to plasma concentrations of these phyto-oestrogens were estimated by conditional logistic regression. Higher plasma concentrations of genistein were associated with lower risk of prostate cancer: RR among men in the highest vs the lowest fifth, 0.71 (95% confidence interval (CI) 0.53-0.96, P trend0.03). After adjustment for potential confounders this RR was 0.74 (95% CI 0.54-1.00, P trend0.05). No statistically significant associations were observed for circulating concentrations of daidzein, equol, enterolactone or enterodiol in relation to overall risk for prostate cancer. There was no evidence of heterogeneity in these results by age at blood collection or country of recruitment, nor by cancer stage or grade. These results suggest that higher concentrations of circulating genistein may reduce the risk of prostate cancer but do not support an association with plasma lignans.

Original languageEnglish
Pages (from-to)1817-1823
Number of pages7
JournalBritish Journal of Cancer
Volume100
Issue number11
DOIs
Publication statusPublished - Jun 2 2009

Keywords

  • Genistein
  • Isoflavone
  • Lignan
  • Plasma
  • Prospective
  • Prostate cancer

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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