Dozens of studies show that phytoestrogens actually inhibit breast cancer cell growth. St. Clair also points out that in Asia, where soy consumption is high, breast cancer incidence is much lower than in the U.S. where soy consumption is low. Phytoestrogens provide estrogenic benefits without the dangerous side effects of synthetic hormones. Coupled with the lack of benefit for heart disease, the side effects of Premarin make it a poor choice for hormone replacement. Until more is known about the 17b-estradiol synthetic estrogens, the best choice for heart health is a combination of flavonoids, phytoestrogens and other natural factors proven to have a beneficial effect.
Supplements ensure that beneficial heart factors are consistently available to the body.
Postmenopausal women who exercise, eat a good diet and take supplements should feel secure that they're doing everything possible to forego America's number one killer, heart disease-without adverse side effects. References Colditz GA, et. Prospective study of estrogen replacement therapy and risk of breast cancer in postmenopausal women. Dietary flavonoids reduce lipid peroxidation in rats fed polyunsaturated or monounsaturated fat diets. Randomized trial of estrogen plus progestin for secondary prevention of coronary heart disease in postmenopausal women.