Isoflavone supplementation noticeably impacts menopausal symptoms and hormonal changes in postmenopausal women.
In order to examine isoflavones effects on menopausal symptoms and the associated hormonal alterations, a systematic review and meta-analysis were conducted. To do this, the PubMed and EMBASE databases were used, but the selected studies were restricted to random controlled trials (RCTs) assessing isoflavone supplementation's impact on menopausal symptoms. Overall, 11 studies were chosen for the final quantitative evaluation, and the isoflavone intervention amount varied among these studies.
The Meta-analysis displayed that supplementing isoflavones meaningfully increased estradiol levels and the Kupperman index (a composite scoring of multiple menopausal symptoms intensity). Yet, there were no significant impacts observed on hot flashes, or the release of two specific hormones: follicle-stimulating hormone and luteinizing hormone. It should be noted that there was a significant inconsistency in estradiol levels and Kupperman index findings among different studies.
