by Biing-Hwan Lin and Rosanna Mentzer Morrison
Data on vegetable consumption broken down by income level reveal that individuals (children and adults) in households with incomes below 185 percent of the poverty level consumed smaller quantities of potatoes and tomatoes than people in households with incomes above that level. In 2007-08, lower income individuals consumed 49.3 and 28.1 pounds per person per year of potatoes and tomatoes, respectively, and those with higher incomes consumed 53.8 pounds of potatoes and 32.1 pounds of tomatoes per person. A bigger difference was observed in consumption of other vegetables (nonpotato and nontomato): 85.8 pounds per person for higher income individuals versus 69.8 pounds per person for lower income individuals.
The more educated the adult, the more other vegetables (nonpotato and nontomato) eaten. In 2007-08, college-educated adults consumed 187.4 pounds of total vegetables per person per year, of which 100.7 pounds were other vegetables. Adults with only a high school education ate 181.9 pounds of total vegetables per person, of which 87.6 pounds were other vegetables. Adults who had less than a high school education consumed 158.2 pounds per person of all vegetables, of which 76.3 pounds were other vegetables.
Consumption Trends Consistent Across Demographic Groups for Juice…
Total fruit consumption was lower in 2007-08 than in 1994-98 for all four age and gender groups. For example, girls’ consumption of fruit declined from 131.3 pounds per person per year in 1994-98 to 121.2 pounds in 2007-08. Some of the decline in total fruit consumption was due to less orange juice being drunk by all four groups. Orange juice is the largest fruit category in terms of consumption, and average U.S. consumption fell from the equivalent of 38.3 pounds of oranges per person per year in 1994-98 to 30.9 pounds in 2007-08.
Falling orange juice consumption, however, was not the only driver of declining fruit consumption—declines were common for other fruits as well. Apple juice, berries, and grapes were the only fruits and fruit categories that had higher average U.S. consumption in 2007-08 than in 1994-98. Every demographic group examined displayed the same patterns for apple juice and orange juice consumption—larger quantities of apple juice and smaller quantities of orange juice were consumed in 2007-08 versus 1994-98.
… But Not For Whole Fruits
Trends in whole fruit consumption were not consistent across demographic groups. In this study, whole fruits comprised all categories of fruits consumed, minus orange juice and apple juice. Thus, whole fruit consumption includes a relatively small amount of juices from other fruits, such as pineapple juice and grape juice, in addition to whole fruits. Federal dietary guidance advises that at least half a person’s recommended daily intake of fruits be whole fruits.
Whole fruit consumption declined for the age and gender groups between 1994-98 and 2007-08. For example, boys’ consumption of whole fruits fell from 71.9 pounds per person per year in 1994-98 to 65.4 pounds in 2007-08. For non-college-educated adults, consumption of whole fruits was relatively stable over the period, averaging around 65 pounds per person per year; for college-educated adults, it fell from 93.7 pounds in 1994-98 to 83.2 pounds in 2007-08.
Higher income consumers’ consumption of whole fruit fell from 81.2 pounds per person per year in 1994-98 to 75.7 pounds in 2007-08, whereas lower income individuals consumed similar quantities in both periods. Non-Hispanic Whites and Hispanics’ consumption of whole fruits declined between 1994-98 and 2007-08, while non-Hispanic Blacks’ consumption in the two periods rose from 65.5 to 71.4 pounds per person per year.
Multiple Factors Affect What We Buy and Eat
ERS’s food availability and loss-adjusted food availability data show that Americans are not increasing their intake of fruits and vegetables, despite the exhortations of health and nutrition experts. Federal food intake surveys also point out lower fruit and vegetable consumption. The big question for future research is why? In some cases, one or two particular fruits and vegetables make up much of the decrease. For vegetables, U.S. potato consumption has fallen from 61.3 to 52.0 pounds per person between 1994-98 and 2007-08, with bigger relative drops for boys and no change in potato consumption for non-Hispanic Blacks. Declining orange juice consumption among all demographic groups is the largest contributor to lower fruit consumption.
Substitution among some products is also evident. Head lettuce is down, but leafy greens—such as spinach and kale—are up. Between 1994-98 and 2007-08, consumption of nonpotato and nontomato vegetables by women grew slightly from 85.5 to 87.7 pounds per person per year. For girls, boys, and men, small declines in consumption of nonpotato and nontomato vegetables occurred. Less bananas and citrus fruits are being consumed, but consumption of berries has risen over the decade. Increases in some whole fruits were not enough to offset declines in other fruits, and whole fruit consumption fell for all age and gender groups.
Food choices are complex, and a multitude of factors affect what we buy and eat. Life style changes and time constraints can determine if we sit down with a glass of orange juice for breakfast, grab a banana on the way out, or forgo the meal altogether. Time for and interest in cooking play a role, too. More eating out could mean more fries on the side or consumption of vegetables not usually prepared at home. Dietary fads and widespread popularity of ethnic cuisines can cause shifts in food choices, including for fruits and vegetables.
The price of products and the income available to buy them can also affect a person’s food choices. Smaller food budgets over time or higher prices due to supply constraints or other factors can induce one to switch to a lower priced alternative food item. Observing national trends and patterns for demographic groups is a first step in analyzing what is driving food choice and potential changes over time.