Taking ginkgo biloba supplements to fend off heart disease? Maybe it is time to reconsider.

In a major test of the purported benefits of the herbal supplement ginkgo biloba, researchers at the University of Pittsburgh have reported no benefit of taking 120 mg of G. biloba twice daily. This double-blind, randomly assigned study of more than 3000 participants over 75 years of age found no differences in outcomes between the control or experimental groups for heart attacks, strokes or angina. Although a very popular supplement, claims for Ginkgo biloba are turning out to be hollow.

PositiveTip: There is much more evidence for the benefits of a healthy diet and regular physical activity--and it is more economical!