Hi - I'm not sure why these freaky stories about soy are floating around, but they have no basis on medical studies or historical evidence whatsoever. In fact, there is extremely strong evidence that soy lowers the risk of reproductive cancers, heart disease, and osteoporosis. If anything, women in their childbearing years should be eating soy as regularly as possible. There is direct evidence that soy, which contains phytoestrogens, helps lower female cancers that are associated with higher estrogen levels and lifetime exposure (like breast cancer). It doesn't raise this risk - the exact opposite! It's hypothesized that one of the reasons Asian women have a fraction of the breast cancer risk that US women have is because of their high soy intake.
Here's a link to an excellent, peer-reviewed, medical study on soy benefits specifically for women's health:
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