Human Reproduction Update Advance Access published online on October 8, 2009
Human Reproduction Update, doi:10.1093/humupd/dmp040
© The Author 2009. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Effects of soy protein and isoflavones on circulating hormone concentrations in pre- and post-menopausal women: a systematic review and meta-analysis
1 Department of Gynaecologic Endocrinology and Reproductive Medicine, Medical University Vienna, Vienna, Austria 2 Department of Gynaecology and Obstetrics, Teaching Hospital, Korneuburg, Austria 3 Isoflavone Research Initiative, Wartbergweg 15, D-86874 Mattsies, Germany
To whom correspondence should be addressed at: 4 Correspondence address. E-mail: martin.imhof@meduniwien.ac.at
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Sir,
We greatly appreciate the meta-analysis by Hooper et al. (2009)
which found that there were minor changes in circulating reproductive hormone levels in pre-and post-menopausal women in response to isoflavone exposure from soyfoods and isoflavone supplements. However, we are troubled by the author's concern that the small