Sin City is also suicide city, a new study claims.
Residents of Las Vegas are 60 percent likelier than those of any other US region to kill themselves - and visitors are twice as likely to do so there than back home, according to Harvard and Temple researchers who analyzed 30 years of data.
Researcher Matt Wray cited some theories in the journal Social Science and Medicine:
* "Gambler's despair."
* Those so predisposed may disproportionately opt to live there or visit.
* The suicidal atmosphere may be contagious.
The study also found that the risk drops as one leaves Vegas.
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