About Soy Isoflavone
An isoflavone phytoestrogen from soy. Meta-analyses suggest modest reductions in menopausal hot flashes and small bone-density benefits at sustained doses, though results are heterogeneous. Estrogenic activity means it should be used cautiously in hormone-sensitive conditions.
What Soy Isoflavone supports
- Phytoestrogen studied for menopausal symptoms
How much Soy Isoflavone to take
The RDA prevents deficiency. The effective range is what clinical trials used to actually move the outcome.
Effective
40–90
mg
Soy isoflavone trials for menopausal symptoms and bone use roughly 40-90 mg/day of total isoflavones.
Clinical evidence
Moderate clinical evidence. Meta-analyses show modest hot-flash and bone benefits; results heterogeneous
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