Why Hispanics — often poor, uneducated and without health insurance — live long and strong has long confounded health professionals, scholars and other experts. This week, the first official life-expectancy data released for U.S. Hispanics shows they outlive whites by 2.5 years and blacks by almost eight years. The life expectancy for Hispanics is nearly 81 years, compared with 78 years for whites and almost 73 for blacks. As a whole, people in the U.S. can expect to live 77.7 years, according to the report from the Centers for Disease Control. While there is no conclusive explanation for Latino longevity, possible factors are related to migration, culture and lifestyle. The term “Hispanic epidemiological paradox” was coined in 1986 by Kyriakos Markides, a professor at UTMB Health, after he found low mortality rates and positive health outcomes among Hispanics in the Southwest. Back then, “it seemed paradoxical that a population so disadvantaged could live so long and be relatively healthy,” he said. “For the first time now we have decent national estimates that support what we have suspected for a long time,” said Markides in reference to the CDC reports.