These include saponins and various protease inhibitors. The soybean-derived BBI appears to be powerful in the prevention and suppression of malignant transformation in a variety of in vivo and in vitro systems. On a more sober note, the data on soy protein reducing menopausal hot flashes was equivocal. In double blind studies, the soy protein compared to a placebo showed only a weak benefit. The scientists politely acknowledged how difficult it was to assess hormones in women.
Women have natural wide swings in hormones that can vary with the time of day.
A couple of the researchers were amazed by the public interest when recruiting patients for their studies on reducing hot flashes. More studies are needed to further address this aggravating problem. It's an awesome responsibility. The researchers suggested that soy may have its most benefit to long-term breast health during puberty. It is reasurring to me that I, as a parent, provide nutritious meals and nurturing healthy attitudes about foods.