11/18/2009 05:12 am ET Updated May 25, 2011

The Soda Tax War Heats Up -- And The Possibilities Are Thrilling

It's true that the effectiveness of a soda tax is still a subject of great debate. Public health officials on the one hand declare it to be a crucial tool in the fight against obesity. Economists, on the other hand, are far more skeptical�"although some new work suggests that a person's feelings of "price sensitivity" at the grocery store, independent of income level, is a strong determinant of food choices and obesity.

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