After reviewing the findings from 18 different studies on soy and breast cancer, researchers from John Hopkins University and Georgetown University found women who consume soy foods have a lower incidence of breast cancer. According to findings, there was an overall 14 percent lower risk in women who consumed soy. However, researchers could not be sure that these benefits were from the soy or the fact that those women eating soy possessed better health habits. These studies focused on soy-based foods such as tofu and soymilk and not soy supplements. It should be noted that soy supplements can have very different biological effects as compared with soy-based foods. The researchers also cautioned against supplementing with high doses of soy, especially those women are breast cancer survivors or those women at increased risk for breast cancer.