A recent study by Yang, et al. (2014) indicates more than 70% of the US population consumes more added sugar than is recommended for a healthy diet. The 2010 Dietary Guidelines for Americans point out that 36% of added sugars in the diets of Americans come from soda, energy drinks, and sports drinks.
Drewnowski, A., & Rehm, C. D. (2013). Energy intakes of US children and adults by food purchase location and by specific food source. Nutrition Journal, 12, 59-2891-12-59. doi:10.1186/1475-2891-12-59 [doi]
Yang Q, Zhang Z, Gregg EW, Flanders W, Merritt R,Hu FB. (2014). ADded sugar intake and cardiovascular diseases mortality among us adults. JAMA Internal Medicine, 174(4), 516-524. doi:10.1001/jamainternmed.2013.13563