I've heard the same thing about soy but I still drink it everyday. I have recently come off of a 12 cycle and have been dealing with elevated estrogen issues. I have been taking arimidex ed and it seems to help a lot! But like I said, I am not sure if it is from soy milk or some type of estrogen rebound from a previous cycle. I have about one month supply of arimidex on hand so I will see how I feel when I come off of it then, by then if my estrogen levels are still high, I am going to stop drinking soy milk!!!