Of course they do, just take a look below. Research shows that soy and soy products contain a lot of phytoestrogens, which play an important role in the treatment and prevention of breast cancer, the key is that soy will change the body's hormone secretion. Clinical medicine has shown that soybeans and soy products have a balancing effect on estrogen in the body. When estrogen in the body is too low, soybeans or soy products will increase it, but when estrogen is too high, soybeans or soy products will also decrease it. This is the main reason why soy is so effective in helping women prevent some estrogen-related cancers. Research has concluded that soybeans and soy products also contain isoflavin, which has a balancing effect on estrogen. This bi-directional balancing effect of soy on estrogen is hard to find second to none in food. Women who consume 1 cup of milk and 500 grams of fish every day for a long time can play a role in regulating estrogen balance. Eat more papaya, royal jelly can also increase estrogen secretion.