Short-term changes in endogenous estrogen levels and consumption of soy isoflavones affect working and verbal memory in young adult females

Islam, Fariha, Sparkes, Cassandra, Roodenrys, Steven and Astheimer, Lee 2008, Short-term changes in endogenous estrogen levels and consumption of soy isoflavones affect working and verbal memory in young adult females, Nutritional neuroscience, vol. 11, no. 6, pp. 251-262.

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Title Short-term changes in endogenous estrogen levels and consumption of soy isoflavones affect working and verbal memory in young adult females
Author(s) Islam, Fariha
Sparkes, Cassandra
Roodenrys, Steven
Astheimer, Lee
Journal name Nutritional neuroscience
Volume number 11
Issue number 6
Start page 251
End page 262
Total pages 12
Publisher Maney Publishing
Place of publication London, England
Publication date 2008
ISSN 1028-415X
1476-8305
Keyword(s) cognition
verbal memory
working memory
estrogen
soy isoflavones
menstrual cycle
Summary Estrogen is known to modulate certain cognitive functions, most notably improving working memory and verbal memory. Soy foods contain isoflavones, phytoestrogens structurally similar to estrogen that weakly bind to estrogen receptors.We investigated the effects of natural variations in estrogen levels and short-term dietary supplementation with soy isoflavones on cognitive function in 28 young women. Performance was examined across a range of cognitive tasks on three occasions during separate menstrual cycles: during a menses phase (low estrogen), during a luteal phase (highest estrogen), and once during a menses phase after a 3-day phytoestrogen-rich dietary intervention. Soy supplementation during menses led to an improvement in working memory and verbal memory. The menstrual cycle effects were mixed, with high estrogen improving performance on a verbal memory task but not on working memory. Our results suggest that soy phytoestrogens may improve working memory through estrogen-independent mechanisms.
Language eng
Field of Research 060199 Biochemistry and Cell Biology not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
HERDC collection year 2008
Copyright notice ©2008, W. S. Maney and Son Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30018640

Document type: Journal Article
Collection: Office of the Deputy Vice-Chancellor Research
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