A new study from U. North Carolina measures soft drink consumption in the U.S. population from 1965 to 2002. The increase is 21%–and a whopping 222 calories per day, close to the reported increase in calorie intake from all sources over that time period. The authors count all sweetened drinks: traditional colas, juice drinks, sports drinks, energy drinks, and vitamin waters. All of these add calories (unless they are artificially sweetened, of course.