SISSIES:

A new study involving men diagnosed with narcissism - which describes an inflated sense of self-importance, over-estimations of uniqueness and a sense of grandiosity - has revealed the health risks associated with this personality trait. Although conducted in a stress-free environment, the results revealed that narcissistic men had higher levels of cortisol, a hormone indicating the activation of the body's stress response system.

"This study examines what is going on 'under their skin', and finds that narcissists actually have more stress hormones floating around in their veins," said Sarah Konrath a psychologist at the University of Michigan in the U.S. and co-author of the paper published today in PLoS ONE.

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