Can soy prevent breast cancer?

We wanted to see if soy could act as a dietary intervention to prevent breast cancer. So, we started The MiSO (Malaysian Soy Mammographic Density) Study. 1. Why soy?  Researchers have been studying the anti-cancer properties of soy since 1991. In countries such as Japan and China, normal soy isoflavone consumption is about 50-75mg/day (that