Research trumps conventional wisdom

Most people who die of heart disease or who experience a non-fatal heart attack
have one of four major risk factors: smoking, high cholesterol, high blood pressure or diabetes. That's the finding of a study in the Aug. 20th Journal of the American Medical Association.

Northwestern University researchers analyzed hundreds of thousands of cases from three large studies. Their finding contradicts conventional wisdom that at least half the people with heart disease have no risk factors. Read the study.