A longevity expert shared some traits that superagers tend to have in common.Drazen Zigic/Getty ImagesThere's no one secret to living to 110 like supercentenarians.But supercentenarians tend to share nine traits, according to an expert.These include having friends and maintaining a healthy weight. A supercentenarian expert shared with Business Insider the nine things people who live to 110 and beyond have in common.Jimmy Lindberg has studied thousands of supercentenarians in her role as a scientific advisor for Longeviquest, an organization that verifies the ages of the world's oldest people.