American adults consume an average of 15 grams of dietary fiber
a day, far below the 25 grams recommended for women and 38 grams
recommended for men. Intake data for U.S. adults age 20 and older
from the 2005-08 National Health and Nutrition Examination Survey
(NHANES) reveal that at-home foods obtained at supermarkets,
grocery stores, convenience stores, and other retail outlets are
richer in fiber than foods eaten at restaurants with wait staff,
fast food places, and other away from home eating places. Home
foods contained an average of 8.2 grams of fiber per 1,000
calories, compared with 6.8 grams in restaurant foods and lesser
amounts in fast foods and other away from home sources. Intakes of
over 7,000 foods reported by NHANES participants were converted
into nutrient intakes using USDA's nutrient database. This chart
appeared in "Food and Nutrient Intake Data: Taking a Look at the
Nutritional Quality of Foods Eaten at Home and Away from Home" in
the June 2012 issue of ERS's Amber
Waves magazine.