[1] Hamilton-Reeves JM, Rebello SA, Thomas W, Slaton JW, Kurzer MS
Soy protein isolate increases urinary estrogens and the ratio of 2:16alpha-hydroxyestrone in men at high risk of prostate cancer
The Journal of nutrition. 2007 Nov;137(10):2258-63. doi: 10.1093/jn/137.10.2258