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POVERTY. About 31.1 million, or 11.3 percent, of Americans were poor in 2000. "Poor," as used here, means living below the poverty threshold, a dollar amount determined by the United States Bureau of the Census by taking a family's total income before taxes and then adjusting for the size of the family and the number of related children under eighteen years of age. In 2000, the poverty threshold ranged from $8,259 for an individual sixty-five and older to $33,291 for a family of nine or more individuals, including eight or more related children under eighteen. The poverty threshold for a family of two adults and two related children was $17,463. Individuals sixty-five and older, blacks and Hispanics, people in families with no workers, households headed by women, and people living inside central cities suffered disproportionately higher rates of poverty compared with other Americans.

The federal poverty threshold originated in the 1950s and is based today on the cost of the Thrifty Food Plan, a minimal-cost food plan determined to be nutritionally adequate according to national dietary guidelines, its cost multiplied by a factor of three (based on the assumption that nutritionally adequate food will cost one-third of a family's income) to account for other living expenses. Although it is updated annually according to the Consumer Price Index for inflation, a chief criticism of the poverty threshold is that food expenses have accounted for less than 15 percent of average income since 1965 (10.2 percent in 2000), making the multiplier too small, while other living expenses (such as housing, health care, transportation, and child care) have increased dramatically, especially for the poor.

Quantitative descriptions of the food and nutrient intakes of poor Americans can be found in analyses of national surveys that collect dietary and sociodemographic data from representative samples of the U.S. population. Analysis of the 1994–1996 Continuing Survey of Food Intakes by Individuals (CSFII) showed that poor Americans, defined as adults aged twenty years and older with incomes below 131 percent of the poverty threshold, tended to consume fewer servings of grains, fruits, vegetables, and dairy foods, but more servings of meats and meat alternates and more added sugars, compared with adults with higher incomes. Fewer servings of grains, fruits, vegetables, and dairy foods, and lower energy and nutrient intakes were found for men and women with less than a high-school education, a proxy measure for poverty, compared with men and women who had completed high school and beyond.

Analyses of a number of national surveys conducted between 1977 and 1996 show that dietary intakes of low-income adults have changed over time. For example, overall dietary quality improved among low-income white and Hispanic women, primarily due to reductions in total and saturated-fat and cholesterol intakes. However, fruit and vegetable intakes remained below the recommended amounts, as did those of key nutrients such as calcium, iron, and folic acid.

Poverty, Food Insufficiency, Food Insecurity, and Hunger

Poverty is inextricably linked with food insufficiency (not having enough to eat some or all of the time), food insecurity (uncertainty about or inability to acquire nutritionally adequate foods in socially acceptable ways), and hunger (the physical consequence of not having enough to eat). According to data from the Third National Health and Nutrition Examination Survey (NHANES III), food insufficiency affected 4.1 percent of U.S. house holds, or between 9 and 12 million individuals. Data from the September 2000 Current Population Survey Food Security Supplement showed the prevalence of food insecurity to be 10.5 percent, and the prevalence of hunger to be 3.1 percent, affecting 11 million and 3.3 million Americans, respectively. Numerous studies of national survey data have shown lower intakes of several nutrients among men, women, and children who experience food insufficiency or food insecurity. Analysis of food intakes and serum nutrients of adults from food-insufficient families has also shown lower intakes of fruits, vegetables, and dairy products, and lower concentrations of serum albumin, serum carotenoids, and serum vitamins A and E. Additional analyses of food-insufficient adults and children reveal a higher prevalence of overweight and obesity, poor health status, and iron deficiency.

Results from qualitative analyses of dietary data, in the form of ethnographic research studies, complement findings from quantitative studies and confirm differences in food choices between poor and nonpoor Americans. Poor Americans tend to consume more starches, fats, and sugars but less of foods associated with good health, like fruits and vegetables, high-fiber grains, and low-fat dairy items. Although specific food choices may differ by ethnicity or geographic location, commonalities in eating patterns exist among poor Americans. Food intakes can vary quite dramatically in the course of a month, with greater quantities and more varied foods purchased immediately after a pay period or allotment of food assistance (such as food stamps) and very limited quantities, of little variety, purchased as funds run out. Also, food intakes are not equal within households. A common occurrence is for the wife or mother of the family to reduce her intake in order to feed her children. Communal dining may also be impossible when income limits available cookware or dining facilities, or sporadic work schedules keep all members of a family from being together at one time. Feelings of deprivation, often rooted in childhood, may lead to buying nonnutritious foods (such as soda and snack foods) that are also attractive because inexpensive. Although studies show that, in theory, consuming a minimal-cost diet in accordance with the latest dietary guidelines is possible, poor Americans are more likely to purchase foods from small, nearby stores that charge an average of 10 percent more than large supermarkets farther from home.

Food Assistance in the United States

Many poor Americans are eligible for federal food-assistance programs like the Food Stamp Program, the National School Lunch and School Breakfast Program, and the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC). In addition to or as a substitute for government assistance, many poor Americans also receive charitable assistance from food pantries and soup kitchens. In 2000, 50.4 percent of Americans identified as food-insecure received assistance from one of the three federal food-assistance programs, 16.7 percent received food from a food pantry, and 2.5 percent had family members who ate at a soup kitchen. Although participation in these programs and services may reduce food insecurity, the dietary quality of participants' food may not be better than that of nonparticipants. Given societal pressures to join the dominant culture and eat the most advertised, least expensive, most accessible foods—healthful or not—the challenge is how to improve the diets of all Americans, especially the poor.

See also Class, Social; Cost of Food; Food Pantries; Food Riots; Food Stamps; Homelessness; Nutrition Transition: Worldwide Diet Change; Population and Demographics; Rationing; Sociology; Soup Kitchens; WIC (Women, Infants, and Children's) Program.

L. Beth Dixon