Can you get breast cancer by eating to much soy??

This story I just read is very interesting and scares me a bit ,but is good to know for your health. Soy contains estrogen, which can cause breast cancer. But people still need to include soy in their diet because it is good for you but too much can cause cancer. Flaxseed, soy and soy by products contain a lot of phytoestrogen! Even green beans, peanuts, and dates have phytoestrogen, but it doesn't have it as bad. There are studies out there that do say a high amount of phytoestrogens can prevent cardiovascular disease, and osteoporosis, but with a high amount of phytoestrogens can increase the chance of getting breast cancer and uterine cancer.

http://pagingdrgupta.blogs.cnn.com/2011/01/19/is-soy-linked-to-breast-cancer/?hpt=Sbin