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News - Meta-Analysis Supports Soy Isoflavone Efficacy for Hot Flushes

By Nutri People

Soy isoflavones are well known phytoestrogens - active substances derived from plants that have a weak oestrogen-like action. They have been shown to provide a number of health benefits, including the promotion of heart health and the maintenance of bone health in post-menopausal women. They have also been studied for their role in preventing chronic disease and slowing down the ageing process in perimenopausal women, and have consequently become a popular alternative to hormone replacement therapy for those wishing to control menopause symptoms naturally.

In the past, trials studying the effect of soy isoflavones on hot flushes have given mixed results, but now a new meta-analysis combining data from 17 different studies provides strong support for their efficacy. The analysis revealed that an average intake of 54 milligrams per day of soy isoflavones for between six weeks and 12 months was associated with an average 21% reduction in the frequency of hot flushes, compared with placebo. In addition, this dose and duration was associated with a reduction in the severity of hot flushes by 26%, compared with placebo. 


Article References

Taku, K et al. Extracted or synthesized soybean isoflavones reduce menopausal hot flash frequency and severity: systematic review and meta-analysis of randomized controlled trials. Menopause. 2012 Mar 19.

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