Editor's note: Mark A. Pereira is an associate professor in the Division of Epidemiology and Community Health at the University of Minnesota.
Smart policies are essential to America's "war on obesity."
The latest idea in that fight is a curious proposal from Mayor Michael Bloomberg of New York City. He's planning to ban the sale of sugary drinks 16 ounces or larger in public venues such as restaurants and movie theaters.
Critics are crying that the move is an infringement on personal freedom. But the bigger question is: What's the rationale behind targeting a single dietary factor in the sea of unhealthy foods and drinks that barrage us every day? Is it scientifically sound?
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