NCIt definition : A class of polyphenolic compounds derived from the Fabaceae family with potential
phytoestrogenic, cholesterol-reducing, chemotherapeutic and antioxidant activity.
In isoflavones the phenyl group on the benzopyran ring is in position 3 relative to
the oxygen of the ring. Most isoflavones for human consumption and that are currently
studied are derived from soy beans.;
Alternative definition : CRCH: A flavone with the phenyl group at C-3 instead of C-2.; NCI-GLOSS: An estrogen-like substance made by some plants, including the soy plant.
Soy isoflavones are being studied in the prevention of cancer, hot flashes that occur
with menopause, and osteoporosis (loss of bone density).;