Soft Drinks Supply Americans With More Calories Than Milk Researchers say alarming trend cuts across all age groups    HealthDayNews -- Soft drinks are surging ahead of milk as a source of calories for many Americans, says a University of North Carolina study.    The study found that between 1977 and 2001 the amount of energy that Americans get from soft drinks has tripled from 50 to 144 calories a day, while energy intake from milk declined from 143 calories to 99 calories a day...