| A study of car and light-truck use in the U.S. between 1985 and 2007 shows that each increase in daily vehicle travel by one mile per licensed driver was associated with a 2.16% increase in the adult obesity rate six years later, says a team led by Sheldon H. Jacobson of the University of Illinois. The number of miles per driver had been rising until 2004, when it leveled off. In 2007, miles driven began falling, but it's unclear whether that drop will lead to lower obseity rates, the researchers say. |
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