Forbes: Chicagoans most stressed in U.S.

A recent study found Chicagoans are stressed out. The reasons- unemployment, gas prices and high population density. Mix those with poor air quality and less than perfect weather, and according to Forbes.com, it's the right combo for a stressful life.

Who else is stressed out? New York, Detroit, Los Angeles and San Francisco. In that order, according to Forbes.

The study considered these factors:

housing affordability

unemployment rates

gas prices

air quality

number of sunny days

population density

Chicago has a 7.3-percent unemployment rate; is the eight most polluted according to air quality; and feels the pain at the pump at just under $4/gallon.

For more on the study, visit forbes.com