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Intakes and sources of soya foods and isoflavones in a UK population cohort study (EPIC-Norfolk).
Eur J Clin Nutr. 2007 Feb; 61(2):248-54.EJ

Abstract

BACKGROUND

It has been suggested that the consumption of a diet rich in phytoestrogens might protect against a variety of diseases common in Western societies. However, there are little available data on the food sources or distribution of intake in the UK diet.

OBJECTIVE

To estimate the average intake and range of soya foods and isoflavones in a population-based cohort and to provide data on isoflavone consumption by food group.

SUBJECTS

Men and women (11,843) from the Norfolk arm of the European Prospective Investigation into Cancer and Nutrition (EPIC).

METHODS

Dietary daidzein and genistein intakes were obtained from 7-day food diaries, completed by participants between 1993 and 1998 and calculated from an in-house food composition database. Energy and anthropometric measurements were also carried out.

RESULTS

Average daily isoflavone intakes for both men and women were less than 1 mg (interquartile range (IQR) men: 0.39-0.82 mg; women: 0.30-0.64 mg). However, in soya-consumers, average daily intakes were higher: 8.6 mg in women (IQR: 2.28-10.72 mg) and 7.5 mg in men (IQR: 2.22-9.17 mg). In both men and women, bread and bread rolls made the highest contribution to isoflavone intake - 62.5 and 53.0%, respectively. In soya-consuming men and women, vegetable dishes and milks were the main contributors - 25.0 and 38.5% in men and 38.5% and 26.0% in women, respectively.

CONCLUSIONS

Isoflavone intake is low in the UK but may be an underestimate due to soya added to commercial products. Future analyses of the isoflavone and lignan content of basic ingredient foods and commercial items commonly consumed in the UK diet will enable more accurate estimates of phytoestrogen intake to be made. The ability to estimate isoflavone intake in Western populations more accurately will enable investigations to be conducted into the suggested beneficial effects of phytoestrogens on health.

Authors+Show Affiliations

EPIC, Department of Public Health and Primary Care, Institute of Public Health, University of Cambridge, Worts Causeway, Cambridge, UK.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16943849

Citation

Mulligan, A A., et al. "Intakes and Sources of Soya Foods and Isoflavones in a UK Population Cohort Study (EPIC-Norfolk)." European Journal of Clinical Nutrition, vol. 61, no. 2, 2007, pp. 248-54.
Mulligan AA, Welch AA, McTaggart AA, et al. Intakes and sources of soya foods and isoflavones in a UK population cohort study (EPIC-Norfolk). Eur J Clin Nutr. 2007;61(2):248-54.
Mulligan, A. A., Welch, A. A., McTaggart, A. A., Bhaniani, A., & Bingham, S. A. (2007). Intakes and sources of soya foods and isoflavones in a UK population cohort study (EPIC-Norfolk). European Journal of Clinical Nutrition, 61(2), 248-54.
Mulligan AA, et al. Intakes and Sources of Soya Foods and Isoflavones in a UK Population Cohort Study (EPIC-Norfolk). Eur J Clin Nutr. 2007;61(2):248-54. PubMed PMID: 16943849.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intakes and sources of soya foods and isoflavones in a UK population cohort study (EPIC-Norfolk). AU - Mulligan,A A, AU - Welch,A A, AU - McTaggart,A A, AU - Bhaniani,A, AU - Bingham,S A, Y1 - 2006/08/30/ PY - 2006/9/1/pubmed PY - 2007/3/21/medline PY - 2006/9/1/entrez SP - 248 EP - 54 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 61 IS - 2 N2 - BACKGROUND: It has been suggested that the consumption of a diet rich in phytoestrogens might protect against a variety of diseases common in Western societies. However, there are little available data on the food sources or distribution of intake in the UK diet. OBJECTIVE: To estimate the average intake and range of soya foods and isoflavones in a population-based cohort and to provide data on isoflavone consumption by food group. SUBJECTS: Men and women (11,843) from the Norfolk arm of the European Prospective Investigation into Cancer and Nutrition (EPIC). METHODS: Dietary daidzein and genistein intakes were obtained from 7-day food diaries, completed by participants between 1993 and 1998 and calculated from an in-house food composition database. Energy and anthropometric measurements were also carried out. RESULTS: Average daily isoflavone intakes for both men and women were less than 1 mg (interquartile range (IQR) men: 0.39-0.82 mg; women: 0.30-0.64 mg). However, in soya-consumers, average daily intakes were higher: 8.6 mg in women (IQR: 2.28-10.72 mg) and 7.5 mg in men (IQR: 2.22-9.17 mg). In both men and women, bread and bread rolls made the highest contribution to isoflavone intake - 62.5 and 53.0%, respectively. In soya-consuming men and women, vegetable dishes and milks were the main contributors - 25.0 and 38.5% in men and 38.5% and 26.0% in women, respectively. CONCLUSIONS: Isoflavone intake is low in the UK but may be an underestimate due to soya added to commercial products. Future analyses of the isoflavone and lignan content of basic ingredient foods and commercial items commonly consumed in the UK diet will enable more accurate estimates of phytoestrogen intake to be made. The ability to estimate isoflavone intake in Western populations more accurately will enable investigations to be conducted into the suggested beneficial effects of phytoestrogens on health. SN - 0954-3007 UR - https://www.unboundmedicine.com/medline/citation/16943849/Intakes_and_sources_of_soya_foods_and_isoflavones_in_a_UK_population_cohort_study__EPIC_Norfolk__ L2 - http://dx.doi.org/10.1038/sj.ejcn.1602509 DB - PRIME DP - Unbound Medicine ER -