"High intake of food items rich in phytoestrogens (flaxseed, sunflower seeds, berries, peanuts, beans and soy) was associated with a monotonically decreasing overall risk [26%] of prostate cancer."
The plant lignan secoisolariciresinol diglycoside (SDG) from flaxseed may be antitumorigenic due to its estrogenic and antiestrogenic effects, anti-oxidative effects, antiproliferative and anti-aromatase effects. Review of studies showing anticarcinogenic
Prostate tumors grew about 30% to 40% slower in the men taking flaxseed whether or not they followed a low-fat diet, Duke researchers told colleagues (June 1-5, Amer Soc Clinical Oncology).