Stress triggered by 9/11 caused a 53% increase in heart problems in the three years following the catastrophe, a new study has found. This held true even for those with no personal connection to the attacks, according to the research published in the Archives of General Psychiatry. Chronic worriers concerned about terrorism for several years after the attacks were up to 4 times more likely to suffer from problems such as high blood pressure and stroke.
Those who reported high levels of post-traumatic stress symptoms up to two weeks after the attacks were twice as likely to have problems. "It seems that the 9/11 attacks were so potent that media exposure helped to convey enough stress that people responded in a way that contributed to their cardiovascular problems," said the study's lead researcher.