When we fret about the deterioration of the American diet, we tend to focus on the excessive amounts of sugar, salt, and calories we're now eating.
Fiber. Only 5% of people in the U.S. meet the Institute of Medicine's recommended daily target of 25 grams for women and 38 grams for men. That amounts to a population-wide deficiency – what nutritionists call the "fiber gap."
"People are so busy avoiding carbs, they forget that these foods give [them] important dietary components," said nutritionist Julie Jones, of St. Catherine University.