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Research Brief

Soy isoflavones have mixed but relevant menopause evidence

A meta-analysis of randomized trials found soy isoflavones reduced hot flash frequency and severity compared with placebo, but later reviews and guidance remain cautious because results vary by dose, form, and symptom target.

Menopause SupportSoy isoflavonesSystematic review and meta-analysis of randomized trials
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What the study looked at

Topic
Menopause Support
Ingredient
Soy isoflavones
Study type
Systematic review and meta-analysis of randomized trials
Published
2012

What it may mean

Soy isoflavones are worth covering in menopause content, especially when shoppers are comparing non-hormonal options.

What it does not prove

The evidence does not mean every menopause symptom improves, or that soy isoflavones are suitable for hormone-sensitive conditions.

What shoppers should check

  • Compare isoflavone amount and genistein context.
  • Check soy allergy and thyroid medication timing.
  • Use clinician guidance for hormone-sensitive cancer history or endocrine therapy.