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As Paul Kedrosky points out in his blog entry, research shows that increasing gas prices is good for the health of a nation. Who woulda thought?

"$1 in real gasoline prices would reduce obesity in the U.S. by 15% after five years, and that 13% of the rise in obesity between 1979 and 2004 can be attributed to falling real gas prices during this period. I also provide evidence that the effect occurs both by increasing exercise and by lowering the frequency with which people eat at restaurants."