It's important to note that some research has found links between soy product consumption and breast cancer risk, but Ansari says that more research needs to be done on the effects of processed soy products and isoflavone supplements on breast cancer risk as most of the studies were conducted in rodents (animal studies) and not humans.
Whole soy food products are low in saturated fat, contain omega-3 and fiber, and are high in protein and calcium. In general, Ansari suggests two to four servings of soy foods per day in their whole forms, which would look like a half cup a day of tofu or edamame, or one cup of soy milk. "Fats are essential for hormone health," she adds. "I recommend heart-healthy fats like omega-3s and mono-unsaturated fatty acids like nuts, avocado, olive oil, fish, and chia seeds."
Ultimately, the amount of phytoestrogens you should incorporate into your diet will need to be discussed with your doctor or a healthcare professional since every body is different.
Take a look below at some other foods Ansari says to boost estrogen: