According to new data compiled by the National Health and Nutrition Examination Survey (NHANES), from 2007 to 2010 adults consumed on average 11.3 percent of their total daily calories from fast food. That's down from 12.8 percent between 2003 and 2006. What's more, the number of calories people got from fast food didn't differ markedly between men (11.8 percent) and women (10.9 percent). NHANES is a program of studies that regularly assesses the health and nutritional status of adults and children in the United States.