Where aspirin is concerned, there is almost no such thing as bad news. Take the surprising results of the landmark Women's Health Study released earlier this month by researchers at Brigham and Women's Hospital. The 10-year study showed low-dose aspirin taken daily does not prevent heart attacks in healthy women under 65, as it does in men. But aspirin did appear to protect women against strokes caused by blood clots. This finding was especially relevant because the women in the study were actually more likely to have strokes than heart attacks, the report's lead investigator says. ``So it's not really...