09 Nov 2017 --- An International Journal of Cancer study has linked the dietary intake of isoflavones to an elevated risk of advanced prostate cancer. Isoflavones are a type of phytoestrogen, a family of estrogen-like compounds found in plants and are found in soybeans, kudzu root and American groundnuts. The study notes that no statistically significant associations were observed between the intake of isoflavones and non-advanced prostate cancer in the study.