Americans consumed an estimated 2,568 calories per person per day in 2010, up from 2,109 calories in 1970. Grains (mainly refined grains) and added fats and oils contributed 405 calories to this 459-calorie increase. Dairy products were the only food group that contributed fewer calories in 2010. In 1970, the meat, eggs, and nuts group provided more daily calories than any other food group.
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