It is often prescribed by alternative practitioners to treat perimenopausal and menopausal women experiencing hot flushes, but has not been shown by studies to be effective. Others such as fennel, red raspberryleaf, and sage have sometimes been given, but there is little evidence that any of these have any effect. Researchers have noted that some women throughout the world, particularly Japanese women, are known to suffer less than American women with regards to perimenopausal and menopausal symptoms. Studies suggest that these differences have something to do with diet and lifestyle, but how much of that can be attributed to diet has not been established. The Asian diet is typically higher in soy intake and lower in animal fat and sugar when compared to American diets.
Soy foods contain high amounts of substances called isoflavones that are considered phytoestrogens.
Animal studies have shown that soy can lower cholesterol and may have some estrogenic effects. In addition, soy is an excellent source of plant protein and fiber. Soy's estrogen like activity is hundreds of times weaker than that of commonly prescribed estrogens. While soy appears to be the riches source of phytoestrogens, small amounts can also be found in oat, peas, red beans, peanuts, and whole grains. Menopause Menopause has been defined as the end of a woman's monthly menstrual periods.