Certain regions of the world are known as "blue zones" because of their long-lived inhabitants. Is it the diet? The climate? The good vibes? Turns out, it might simply be lousy record-keeping or outright fraud, reports NPR. The story cites the work of Saul Justin Newman, a research fellow at Oxford who's the author of a new preprint study that may puncture some holes in longevity myths. Newman looked at UN data from more than 230 nations and found some telltale problems. "The best predictor of where 100-year-olds are within Okinawa [Japan] is places that have had their cities bombed by the Americans, burning the birth records," he says. "So the more bombing you have, the more 100-year-olds you have."