Systematic review: Current evidence suggests phyto-oestrogens are safe and well tolerated by postmenopausal women, with moderately increased risk of adverse gastrointestinal effects compared with placebo.
Maskarinec G. Systematic review: Current evidence suggests phyto-oestrogens are safe and well tolerated by postmenopausal women, with moderately increased risk of adverse gastrointestinal effects compared with placebo. Evid Based Med. 2010 Apr; 15(2):55-6.