Health Mystery in New York: Heart Disease

The New York Times reports that New York City isn't too healthy:

Death rates from heart disease in New York City and its suburbs are among the highest recorded in the country, and no one quite knows why.

Heart disease is more common among poorer people. Yet Nassau County, one of the 15 highest-income counties in the country, suffers heart disease death at a rate 20 percent above the norm, a review of death certificate records by The New York Times shows. Some New Jersey counties have similar rates. All the city boroughs except Manhattan have rates as high as rural counties in the South and Appalachia.

Maybe the urban lifestyle isn't the healthiest lifestyle.