Our Food Supply

well soy contains a large concentration of isoflavones. Isoflavones is a class of phytoestrogens. Phytoestrogen are estrogen-like chemicals. So yes it is a negative consequence. For the second part of the question, some times its a bad thing to speed up the growing process because they use chemicals to speed up the process. Sometimes the chemicals they use are not good for humans and can make them sick.