by Biing-Hwan Lin and Rosanna Mentzer Morrison
Despite Federal nutrition guidance, food industry promotional campaigns, and encouragement from parents to “Eat your vegetables,” Americans’ consumption of fruits and, especially, vegetables has declined.
Over the last decade, loss-adjusted supplies of total fruits and vegetables available to consume in the United States have fallen from 299 pounds per person in 2003 to 272 pounds per person in 2013. Not the direction that nutritionists and others interested in the public’s health had hoped for.
However, a deeper look into the overall numbers reveals that three fruits and vegetables—orange juice, potatoes, and head lettuce—account for 22 pounds of this 27-pound decline. And, despite the decline in consumption of some fruits and vegetables, Americans are consuming more of other types of these nutrient-packed foods.
The loss-adjusted food availability data serve as a proxy for consumption by the nation as a whole but do not reveal who eats what foods and how much is eaten by particular demographic groups. A more nuanced analysis of consumption trends—by product and by demographic groups—would identify shortfalls for particular groups and help in targeting nutrition outreach efforts.
In a recent report, Economic Research Service (USDA) researchers linked ERS’s food availability data and food intake survey data, using a USDA database that translates foods into their commodity components. This linkage enabled them to break down ERS’s national consumption estimates by household and personal characteristics, helping to answer the questions: How widespread is the decline in fruit and vegetable consumption? And, is it steeper for some groups than others?
Potatoes Driving Declining Vegetable Consumption
National food intake surveys provide demographic breakdowns of who is eating what foods and how much. However, survey respondents report foods as eaten—such as a slice of apple pie, a cup of applesauce, or a glass of apple juice. A database providing the amount of apple in each food is needed to derive the total amount of apples, or other food commodities, consumed by an individual.
ERS researchers used FICRCDs to disaggregate the thousands of mixed foods recorded in the intake surveys—from apple pie to zucchini lasagna—into 63 foods and beverages, including 11 fruits or fruit groups and 15 vegetables or vegetable groups. Per capita measures of foods and beverages eaten by people in different demographic groups were estimated by taking average consumption patterns from the surveys for different subgroups of the U.S. population and applying these patterns to the loss-adjusted food availability data for the corresponding year.
Consumption of total vegetables fell across the four age and gender groups between 1994-98 and 2007-08. Much of this decline was driven by reduced consumption of potatoes, which includes baked, mashed, french fries, chips, and other forms expressed in fresh-weight equivalents. Boys (age 2 to 19) had the largest drop; their potato consumption fell from 63.7 pounds per person per year in 1994-98 to 45.2 pounds in 2007-08. Potato consumption by non-Hispanic Whites, Hispanics, and other races fell over the period from 63.8 to 55.4, from 52.4 to 38.2, and from 50.5 to 37.1 pounds per person per year, respectively. Throughout the period, non-Hispanic Blacks consumed about 58.1 pounds of potatoes per person per year.
Intake of tomatoes—the second most consumed vegetable—held fairly steady between 1994-98 and 2007-08 for all age groups. When consumption of potatoes and tomatoes is subtracted from the mix, consumption of other vegetables by girls, boys, and men fell, too, but not as sharply as that of potatoes. For women, annual consumption of nonpotato and nontomato vegetables increased slightly (2.2 pounds per person). Some vegetables posting gains in consumption over this period in all age groups include peppers, leafy greens, and broccoli and cauliflower.
Total vegetable consumption declined between 1994 and 2008 across four race/ethnic background groups—non-Hispanic Whites, Non-Hispanic Blacks, Hispanics, and others. The decline was smallest among non-Hispanic Whites (5.5 pounds per person per year), followed by non-Hispanic Blacks (11.9 pounds), Hispanics, (23.0 pounds), and others (27.2 pounds).