http://healthyeatingresearch.org/research/sugar-sweetened-beverage-taxes-and-public-health-a-research-brief/

This research brief examines the latest information on sugar-sweetened beverages (SSBs) and food pricing strategies. The brief concludes that taxes resulting in substantially higher prices of SSBs could be a powerful policy tool for curbing obesity rates by leading people to reduce consumption. A Research Brief by Healthy Eating Research, the Robert Wood Johnson Foundation, July, 2009.