06/05/2025
Estrogen hormone therapy may result in a 30 to 40 percent net reduction in hot flash frequency and severity (along with a host of possible side effects), but what about food we can eat instead of a pill to pop? More than a dozen randomized, double-blind, placebo-controlled trials have been performed on soy isoflavones and found that the equivalent of about two servings of soy foods a day reduces hot flash frequency by about 20 percent more than placebo and hot flash severity by about 25 percent more.
Soy isoflavones have also been shown to improve other menopausal concerns, including vaginal dryness, bone loss, memory, and cognitive functions more generally, as well as depression.
And, two randomized controlled trials found that reduced-fat plant-based diets with a daily half-cup serving of cooked whole soybeans can reduce the number of serious hot flashes by 84 to 88 percent within 12 weeks. Overall, most people randomized to the plant-based group ended up free of moderate-to-severe hot flashes, compared to about 95 percent still suffering in the control group.
The bottom line, wrote one consensus panel of experts, is that soy can be considered a first-line treatment for menopausal symptoms of hot flashes and night sweats. Additionally, soy foods can lower LDL cholesterol, which may explain the lower associated cardiovascular disease risk. Soy eaters are also less likely to get breast cancer, prostate cancer, colorectal cancer, and lung cancer.
Healthiest choices of soy foods include edamame, cooked soybeans, tempeh, tofu, and unsweetened soy milk.
How does soy food compare to estrogen hormone therapy? I cover all of that and more in the video “Soy Foods for Menopause Hot Flash Symptoms” at https://see.nf/isoflavones.
How Not to Age is out now https://see.nf/HNTABook.
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