A 12 ounce can of Coke has 10 teaspoons of sugar which contains 42 grams of sugar supplying 167 calories.  A 20 ounce bottle has 17, and a 30 ounce bottle has 27 teaspoons of sugar.  The average American drinks 600 cans (56 gallons) of soft drinks a year, up from 216 cans in 1971.  The average American teenager drinks 3-6 cans of soda a day.