Repository logo
 

Estimated intake of dietary phyto-oestrogens in Australian women and evaluation of correlates of phyto-oestrogen intake.

Published version
Peer-reviewed

Type

Article

Change log

Authors

Lahmann, Petra H 
Hughes, Maria Celia 
Ibiebele, Torukiri I 
Mulligan, Angela A 
Kuhnle, Gunter GC 

Abstract

The role of dietary phyto-oestrogens in health has been of continued interest and debate, but data available on the distribution of intake in the Australian diet are scarce. Therefore, we aimed to estimate phyto-oestrogen consumption in Australian women, describe the pattern of intake and identify correlates of high phyto-oestrogen intake. Study participants were 2078 control women (18-79 years) from two population-based case-control studies on gynaecological cancers (2002-2007). Dietary information was obtained using a 135-item FFQ, and the intakes of isoflavones, lignans, enterolignans and coumestans, including their individual components, were estimated using a database of phyto-oestrogen content in food developed in the UK. Median total intake (energy-adjusted) of phyto-oestrogens was 1·29 mg/d, including 611 µg/d isoflavones, 639 µg/d lignans, 21 µg/d enterolignans and 8 µg/d coumestrol. Both isoflavone and lignan intakes were strongly skewed towards higher values and positively correlated with age. Women consumed on average two servings of soyabean foods/week. Compared to lower phyto-oestrogen consumers (≤1·29 mg/d, median split), higher phyto-oestrogen consumers (>1·29 mg/d) were slightly older, less likely to be smokers, had a higher educational and physical activity level, lower BMI, lower intake of dietary fat, and higher intake of fibre, selected micronutrients and soyabean foods (all P < 0·03). The daily intake of phyto-oestrogens in Australian women with predominantly Caucasian ethnicity is approximately 1 mg; this is similar to other Western populations, but considerably lower than that among Asian women. However, those with a relatively high phyto-oestrogen diet seem to have a healthier lifestyle and a more favourable dietary profile compared to others.

Description

Keywords

ANECS, Australian National Endometrial Cancer Study, AOCS, Australian Ovarian Cancer Study, Coumestans, EPIC, European Investigation into Cancer and Nutrition, FFQ, Isoflavones, LARI, lariciresinol, Lignans, MAT, matairesinol, PINO, pinoresinol, Phyto-oestrogens, SECO, secoisolariciresinol

Journal Title

J Nutr Sci

Conference Name

Journal ISSN

2048-6790
2048-6790

Volume Title

1

Publisher

Cambridge University Press (CUP)