The primary source of Phytoestrogens (PhE) - soy and soy bean products - tofu, soy milk etc., which contain PhE in high concentration. Majority of plants contain PhE. , but in a small amount. The similarities, at molecular level, of an estrogen and a phytoestrogen allow them to be helpful in early stages of menopause. They do this primarily by relieving hot flashes. Unfortunately it is hard to standardize dose and frequency of consumption and does not consistently help everyone.
The good news is it is considered to be harmless. It should not be taken by women with diagnosed cancer of the uterus or breast, mostly because of potential unconfirmed risk.
Yet, it does not increase risk for development of cancer and can be safely used to relieve menopausal hot flashes, but not other menopausal symptoms. It appears that oriental women with a high rate of soy products consumption, suffer much less from hot flashes. So, we do recommend a glass of soy milk in the night time before starting Hormone replacement therapy. If it meets a woman's expectations, she can safely stay with it for years.
Similarly, Isoflavones [ red clover ] have mild estrogen like action, which unfortunately although harmless is ineffective. Numerous isoflavone and phytoestrogen based products, promising miraculous relief fall far from meeting most women’s expectations and cannot be seriously considered.
Before buying OTC , often expensive “ miracle “ supplements, focus on the active ingredient. If this ingredient is based on Phytoestrogens or Isoflvones, do not expect dramatic results in managing menopausal symptoms.
Black Cohosh, is the only herb worthwhile to try before going to HRT. It is not a Phytoestrogen and it does not elevate or mimics action of estrogens. Black Cohosh appears to reduce hot flashes through Serotonin-like action on thermoregulating center of the brain and thus reducing hot flashes.
Black Cohosh is very safe, but once again, does not work for everybody or even every time. It has to be tried twice daily, maximum 4 pills per day, it can be taken without detriment for years.
Dong Quai, also is not a Phytoestrogen, but appears to reduce level of circulating estrogens, contradictory recommendations make it unlikely candidate for relief of menopausal symptoms. It is less expensive and can be tried without detriment.
So to summarize - try PhE remedies for short period of time, purchase inexpensive formulation, use suficient quantities- there is very low risk of "overdosing" - it is unlikely to help or harm. Make sure you have had a GYN consult and screening mammogram less than a year prior. If there are any signs of unexpected uterine spotting whilst using PhE, consult your GYN. If you notice an improvement of menopausal symptoms, continue using PhE as long as needed, it's safe!
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