@pearl I do not have any answer but with my limited knowledge I would steer clear of the usual milk and soy. I would go for organic milk but not the ones which are heated to high temps to prolong shelf life. I have switched my family to goats milk, written to the farm and so far they say they do not give their animals antibiotics or steriods what nots... I had hormone -ve cancer but I would be careful with soy myself. I seriously believe most soy in the market are GMO. If I do take soy, I try to get those that are from Japan (miso paste we use for soup). I do use organic soya sauce but just a little bit in my diet for seasoning cooking.
I have read about vegans getting breast cancer so nothing is guaranteed. xx