In foods phytoestrogens are present as diet or use of supplements can.
Phytoestrogens: science, evidence, and advice for breast cancer patients. supplements and foods rich in phytoestrogens, especially for breast cancer patients.
Phytoestrogens are a natural compound found in plants. There are phytoestrogen supplements, but getting these from natural food sources is a better choice. the risk of death and recurrence in women with breast cancer.