Women trying to conceive should just say no to eating soy, at least around the time of ovulation. What’s special about soy? It contains isoflavones, compounds that act like estrogen in the body. A study at King’s College London found that one isoflavone, called genistein, can actually sabotage sperm as they swim in the female reproductive tract trying to fertilize the egg. So avoid consuming soy milk, edamame, miso, tofu, and any baked goods made with soy flour. Also be wary of vegetarian meat substitutes, as many are made from textured soy protein or tempeh, a soy product. Since some packaged foods may contain soy or soy protein, be sure to read food labels carefully.