As if feeling bad werent enough, negative emotions could be harming your heart. Over time, persistent blues, anxiety or anger can increase the risk of heart diseaseor make an existing condition worse. Psychosocial factors are increasingly recognized as important predictors of heart disease, says Richard Stein, M.D., director of preventive cardiology at the Beth Israel Medical Center in New York and author of "Outliving Heart Disease." Depression is right up there with hi...