Panicky stories spur the release of cascades of glucocorticoid (cortisol). This deregulates your immune system and inhibits the release of growth hormones. In other words, your body finds itself in a state of chronic stress. High glucocorticoid levels cause impaired digestion, lack of growth (cell, hair, bone), nervousness and susceptibility to infections. The other potential side-effects include fear, aggression, tunnel-vision and desensitisation.
I thought it was particularly ironic given how horrible CNN appears to be botching the news. Look at the headlines that were on its website yesterday regarding the Boston Marathon bombing. The Guardian
Both Mr. Harris and Mr. Mamet said that the big publishers focused mostly on blockbuster books and fell short on other titles — by publishing too few copies, for instance, or limiting advertising to only a short period after a book was released. NYTimes