" than those who ate less.135 The quantity of phytoestrogens found in just a single cup of soy milk136 may reduce the risk of breast cancer returning by 25 percent.137 The improvement in survival for those eating more soy foods was found both in women whose tumors were responsive to estrogen (estrogen-receptor-positive breast cancer) and those whose tumors were not (estrogen-receptor-negative breast cancer). This also held true for both young women and older women.138 In one study, for example, 90 percent of the breast cancer patients "

― Michael Greger , How Not to Die: Discover the Foods Scientifically Proven to Prevent and Reverse Disease