Soy isoflavones improve systemic arterial compliance but not plasma lipids in menopausal and perimenopausal women

Paul J. Nestel, Takeshi Yamashita, Takayuki Sasahara, Sylvia Pomeroy, Anthony Dart, Paul Komesaroff, Alice Owen, Mavis Abbey

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The possibility that the heightened cardiovascular risk associated with the menopause, which is said to be ameliorated by soybeans, can be reduced with soy isoflavones was tested in 21 women. Although several were perimenopausal, all have been included. A placebo-controlled crossover trial tested the effects of 80-mg daily isoflavones (45 mg genistein) over 5- to 10-week periods. Systemic arterial compliance (arterial elasticity), which declined with age in this group, improved 26% (P<.001) compared with placebo. Arterial pressure and plasma lipids were unaffected. The vasodilatory capacity of the microcirculation was measured in nine women; high acetylcholine-mediated dilation in the forearm vasculature was similar with active and placebo treatments. LDL oxidizability measured in vitro was unchanged. Thus, one important measure of arterial health, systemic arterial compliance, was significantly improved in perimenopausal and menopausal women taking soy isoflavones to about the same extent as is achieved with conventional hormone replacement therapy.

Original languageEnglish
Pages (from-to)3392-3398
Number of pages7
JournalArteriosclerosis, Thrombosis, and Vascular Biology
Issue number12
Publication statusPublished - 1997
Externally publishedYes


  • Flavonoids
  • Genistein
  • Menopause
  • Women

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