If you're searching for the fountain of youth, you might want to start in Acciaroli, Italy, where a one in every 10 people is over 100 years old. Despite being home to just 700 residents, the southwestern Italian village has caught the eye of researchers from around the globe who are attempting to pinpoint the town's secret to longevity.
Researchers from the University of California San Diego and Rome's Sapineza University traveled to Acciaroli to take a closer look at the long-living residents. Over a six month period, during which the scientists studied the blood of 80-plus residents, the researchers found that the town's population had one thing notably in common: above-average circulation. The blood samples collected showed that there was an unusually low level of a hormone called adrenomedullin—which causes blood vessels to widen, contract, and cause serious circulatory issues—across the town as a whole.
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According to The Independent, researchers said these people had levels of the hormone that would be considered normal for people in their 20s and 30s. The low adrenomedullin levels seemed "to act as a powerful protecting factor, helping the optimal development of microcirculation."