ATLANTA -- U.S. Hispanics can expect to outlive whites by more than two years and blacks by more than seven, government researchers say in a startling report that is the first to calculate Hispanic life expectancy in this country.
The report released Wednesday is the strongest evidence yet of what some experts call the "Hispanic paradox" -- longevity for a population with a large share of poor, undereducated members.
A leading theory is that Hispanics who manage to immigrate to the U.S. are among the healthiest from their countries.
A Hispanic born in 2006 can expect to live about 80 years and seven months, the government said. Life expectancy for a white is about 78, and for a black, 72 years and 11 months.
Until recently, the government didn't calculate life expectancy for Hispanics as a separate group; they were included among the black and white populations.
The new report projecting life spans is based on death certificates from 2006.
By breaking out the longer-living Hispanics, the life expectancies for non-Hispanic whites and blacks declined slightly, said the report's author, Elizabeth Arias, of the Centers for Disease Control and Prevention.
Hispanics are the largest, fastest-growing minority in the United States, accounting for 15 percent of the population.
An estimated 40 percent of them are immigrants, who in some cases arrived after arduous journeys to do taxing manual labor. It takes a fit person to accomplish that, suggesting that the U.S. is gaining some of the healthiest people born in Mexico and other countries, said Dr. Peter Muennig, of Columbia University's school of public health. He has studied life expectancy in different countries.
Compared to the estimate for all U.S. Hispanics, life expectancy is nearly two years lower in Puerto Rico, more than two years lower in Cuba, and more than four years lower in Mexico, according to World Health Organization figures.
However, experts say immigrant hardiness diminishes within a couple of generations of living here. Many believe it's because the children of immigrants take up smoking, eat more fast food and begin other habits blamed for wrecking the health of other ethnic populations.
"The American lifestyle is very sedentary. That's not a good thing," said Jane Delgado, president of the National Alliance for Hispanic Health, which focuses on improving health services for Hispanics.
Health researchers have seen a strong link between poverty, lack of education and life-shortening health problems.
Hispanics are disadvantaged in those areas: About 19 percent of Hispanics live at or below the federal poverty level -- three times more than whites. As for education, fewer than 13 percent of Hispanics have a college degree, compared with 17 percent of blacks and 30 percent of whites.
Indeed, past CDC studies have shown that Hispanics suffer some diseases at higher rates than whites, including diabetes and heart disease. But their death rates from those diseases were lower.
As early as 1986, some researchers had been reporting what appeared to be lower death rates among Hispanics compared with other groups in some parts of the country, but a national estimate was difficult.
Calculating life expectancy is a tough task that requires analyzing extensive information about how people died and how old they were, as well as statistical modeling to predict how long people born today will live if current trends continue.
Until recently, there was significant uncertainty about the accuracy of death records for Hispanics. Most health records only had data on blacks and whites. U.S. death certificates didn't provide for a way to identify someone as Hispanic until 1989.
There are limitations to the report. For example, it could not completely account for all Hispanics who move back to their countries of origin to die.
Delgado said one thing the report should do is erase any lingering belief that whites are the longest-living group of Americans.