Soy not a fountain of youth

Soy protein supplements did not improve thinking, bone density or cholesterol levels in a study of 175 postmenopausal women. Results from the double-blind, randomized study were published in this week's Journal of the American Medical Association.

Soy contains isoflavones which are thought to mimic the effects of estrogen. The study’s authors wrote that starting soy supplements before menopause might be more effective and suggested further research. Read the abstract.