I have heard that soy can lower blood cholesterol levels. The research being conducted using soy products is exciting but preliminary , much more research needs to be done before we can make detailed health claims on what it can do for us. So the best advice at this point is to use soy foods NOT soy supplements. Fortunately, there is a much larger selection of soy products on the market today. The isoflavones are thought to be partially responsible for the beneficial health effects related to soy.
Some products have the isoflavone levels listed on the label.
If not, call the company that manufactures the product and ask whether or not the product contains isoflavones. Standard soy products are tofu, tempeh, textured soy protein, soy milk, soy nuts, and soy flour. Pull out your favorite recipes and see if you can substitute soy flour for the wheat flour. You can try pouring soy milk over your cereal in the morning for a change. If you are partial to desserts, tofu-based puddings are very satisfying.