Classification of overweight and obesity by body mass index (BMI)
| Obesity class | BMI (kg/m2) | |
| Underweight | <18.5 | |
| Normal | 18.5–24.9 | |
| Overweight | 25.0–29.9 | |
| Obesity | I | 30.0–34.9 |
| II | 35.0–39.9 | |
| Extreme obesity | III | ≥40 |
| SOURCE: "Classification of Overweight and Obesity by BMI," Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults, the Evidence Report, National Heart, Lung, and Blood Institute in cooperation with the National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, NIH Publication No. 98-4083, September 1998 [Online] http://www.nhlbi.nih.gov/guidelines/obesity/ob_gdlns.htm [accessed December 30, 2003] | ||
excessive consumption of calories and inadequate physical activity—eating too much and exercising too little.
Some observers maintain that Americans were destined to become overweight when their diets remained unchanged even as products of the industrial revolution such as cars, automation, and a variety of laborsaving devices sharply reduced levels of physical activity. The widespread availability of high-calorie foods and less physically demanding jobs conspired to make Americans fatter. Others contend that the rise in overweight and obesity began during the 1970s, when women entered the work force in large numbers and increasingly relied on processed, convenient, and calorie-dense, saturated-fat-laden fast foods to feed their families. The CDC reported that in 2000, women ate 325 calories more per day than they did in 1971, and men consumed 168 calories more each day. Table 1.9 shows that except for a slight drop during the late 1990s, Americans' daily fat consumption, and calories from fat, steadily increased from 1970 to 2000.
A variety of societal trends are thought to contribute to Americans' propensity to overeat, including eating outside the home, as well as ready access to and preference for sugar- and fat-laden foods. Table 1.10 shows how expenditures for eating away from home have increased steadily, and almost doubled between 1988 and 2002. In addition to less strenuous work, many Americans spend their leisure time in relatively sedentary pursuits—watching television, using computers, or playing video games—that not only do not expend calories but also, as in the case of television, actually encourage excessive eating.
Americans Enjoy Eating Out
Dining out is an important part of American culture, and market research conducted by Mintel International Group Ltd. found that Americans spend nearly half of their household food budget on eating out. In 2001 Americans spent nearly $30 billion on casual dining (as opposed to more pricey upscale restaurants or fast-food franchises).
FIGURE 1.4
Prevalence of obesity among adults aged 20 years and over, 1997–2003
The Mintel Report (Dining Out Review Market, Volume II: Casual/Family Restaurants, U.S. Report, May 2002) revealed that while restaurant dining growth slowed to single-digit growth in 2001 from the high teens from 1995 to 2000, the casual dining market is projected to continue to grow at about 5–7 percent per year through 2006.
Many nutritionists and obesity researchers assert that controlling portion size, which is key to controlling calorie consumption, is more difficult in restaurants, where portions are frequently quite large. Increasingly, restaurants have translated consumer demands for value into more food for less money. Since humans are genetically programmed to eat when food is abundant, larger portions trigger the natural impulse to eat more.
Pennsylvania State University researchers confirmed the notion that presented with larger portions, people will generally consume more. When they offered research subjects a five-cup portion of macaroni and cheese, the subjects all responded by eating 30 percent more than they had when they were given portions half that size. In "Portion Size of Food Affects Energy Intake in Normal-Weight and Overweight Men and Women" (American Journal of Clinical
FIGURE 1.5
Prevalence of obesity among adults aged 20 years and over, by age group and sex, January–June 2003
Nutrition, vol. 76, December 2002), Barbara Rolls and her colleagues observed that both "restrained and unrestrained eaters" ate more when offered larger portions and asserted that Americans have become accustomed to eating too much at one sitting. The problem of portion size is compounded by the observation that Americans are eating larger portions of foods that are high in calories and fat.
David Grotto, a registered dietitian and spokesperson for the American Dietetic Association (ADA), asserted restaurant portions have not changed as much as Americans' eating habits. In an interview published in the June 16, 2003, issue of the Miami Herald, Grotto noted that "A generation ago, dining out was pretty much limited to special occasions. Then, over time, the frequency of eating out increased and going to restaurants became part of Americana, especially in urban areas."
Bigger Portions
Researchers Barry Popkin and Joy Samara Nielson from the University of North Carolina at Chapel Hill looked at portion size consumed in the United States to determine whether average portion sizes had increased over time. They analyzed data collected by national nutrition surveys—the Nationwide Food Consumption Survey
FIGURE 1.6
Age-adjusted prevalence of obesity among adults aged 20 years and over, by sex and race/ethnicity, January–June 2003
and the Continuing Survey of Food Intake by Individuals—conducted in the United States in 1977, 1989, 1994, and 1996, detailing the consumption habits of more than 63,000 people. For each survey year the researchers analyzed average portion sizes consumed of specific food items (salty snacks, desserts, soft drinks, fruit drinks, French fries, hamburgers, cheeseburgers, pizza, and Mexican food) by eating location—home, restaurant, or fast-food outlet. In "Patterns and Trends in Food Portion Sizes, 1977–1998" (Journal of the American Medical Association, vol. 289, no. 4, January 2003), the researchers reported that over the past two decades, the average portions of such salty snacks as popcorn and chips have increased by 60 percent, and soft drinks have grown by 50 percent. The average dispensed soft drink measured 13 ounces (370 milliliters) in 1977, but by 1996, it was 20 ounces (570 milliliters). During the same period, an average bag of chips grew to 1.6 ounces (45 g) from 1 ounce (28 g). As a result, the average chips-and-soda snack contains 150 more calories than it did two decades ago.
The portion-size changes were observed with many fast-food offerings. During the twenty years studied, the size of the average hamburger grew by 23 percent, to 200 g (7.05 ounces), while fries portions grew by 16 percent, to 100 g (3.52 ounces). A regular-size burger-and-fries meal contains 155 calories more than it did in 1977. The researchers explained that increasing portion sizes reflected the fast-food industry's practice of "supersizing" or "value adding"—offering larger sizes at discounted rates. Worse still, the researchers found that portion size also had expanded in Americans' homes, indicating widespread ignorance about appropriate portion size. Interestingly, portion sizes were smallest in restaurants, although they too had increased during the study period. For example, twenty years ago a restaurant portion of spaghetti with tomato sauce and three small meatballs contained 500 calories. In 2004 the average restaurant serving has twice as much spaghetti, three large meatballs, and 1,025 calories.
Increased portion sizes at home are reflected in recipes and cookbooks. Another study reported that recipes call for bigger portions using the same ingredients than they did in past decades. For example, a brownie recipe from a classic cookbook published more than three decades ago, Joy of Cooking (New York: Signet Classics, New American Library, 1974) recommended dividing it into thirty servings. The same recipe in 2004 is divided into only sixteen servings. Similarly, a 1984 recipe for Toll House cookies yielded 100 servings, whereas today the same recipe yields only sixty. Other popular food items have increased in size and calorie content. When the National Heart, Lung, and Blood Institute compared portion sizes and the corresponding calories of several popular foods from 1983 and 2003, researchers found that two decades ago a bagel measured three inches in diameter and contained 140 calories. In the early twenty-first century, six-inch bagels contain more than twice as many calories—a whopping 350.
The University of North Carolina researchers also noted other changes in eating behavior. For example, the study found that Americans obtain 19 percent of their total calories from snacks—double the amount of 1977—and 81 percent from meals. They concluded that "control of portion size must be systematically addressed both in general and as it relates to fast-food pricing and marketing. The best way to encourage people to eat smaller portions is if food portions served inside and outside the home are smaller."
Technology Satisfies the Hunger for Quick, Inexpensive Food
In Why Have Americans Become More Obese (Cambridge, MA: National Bureau of Economic Research, Inc., 2003) Harvard University economists David Cutler, Edward Glaeser, and Jesse Shapiro refuted the notion that increased portion sizes, increasingly sedentary lifestyles, or restaurant dining were responsible for Americans' widening waist-lines. After examining nearly 100 years of nutritional data, the researchers determined that technological advances have increased the efficiency of food production and made food more varied, convenient, tastier, and cheaper.
The economists illustrated how efficiencies in food preparation have revolutionized Americans' eating habits. They compared the speed and ease of preparation of commercial
TABLE 1.9
Amount of added fats consumed, 1970–74 to 2000
| Per capita annual averages | |||||||||
| Item | 1970–74 | 1975–79 | 1980–84 | 1985–89 | 1990–94 | 1995–99 | 2000 | Change, 1970–74 to 2000 | 2000 food supply, Change, added fats per capita per day1 |
| Pounds, product weight2 | Percent | Grams | |||||||
| Fats and oils | 55.7 | 57.4 | 61.7 | 66.1 | 69.1 | 67.5 | 77.1 | 38 | 63.0 |
| Salad and cooking oils | 16.7 | 19.5 | 22.2 | 24.8 | 26.2 | 27.2 | 33.7 | 102 | 29.8 |
| Shortening | 17.2 | 17.6 | 19.0 | 21.9 | 23.1 | 21.2 | 23.1 | 34 | 19.2 |
| Margarine | 11.0 | 11.4 | 10.8 | 10.6 | 10.6 | 8.5 | 8.2 | −25 | 4.8 |
| Butter | 5.0 | 4.4 | 4.6 | 4.6 | 4.5 | 4.4 | 4.6 | −8 | 3.6 |
| Lard (direct use)3 | 3.6 | 2.5 | 2.1 | 1.5 | 1.4 | 1.8 | 1.9 | −47 | 1.2 |
| Edible beef tallow (direct use)3 | na | .4 | 1.4 | 1.2 | 1.8 | 2.9 | 4.0 | na | 2.5 |
| Other edible fats and oils4 | 2.2 | 1.9 | 1.6 | 1.4 | 1.4 | 1.4 | 1.5 | −32 | 1.8 |
| Very high-fat dairy foods that are included in total added fat: Cream cheese | .6 | .8 | 1.1 | 1.4 | 2.0 | 2.2 | 2.4 | 300 | .7 |
| Half pints, product weight2 | |||||||||
| Heavy cream | 1.0 | 1.1 | 1.5 | 2.2 | 2.5 | 3.4 | 3.7 | 270 | .6 |
| Light cream | .7 | .6 | .5 | .8 | .6 | .9 | 1.1 | 57 | .1 |
| Sour cream | 2.4 | 3.1 | 3.7 | 4.5 | 5.0 | 5.5 | 6.2 | 158 | .5 |
| Half and half | 5.0 | 4.5 | 4.8 | 5.8 | 5.8 | 6.1 | 6.9 | 38 | .3 |
| Eggnog | .7 | .8 | .8 | .9 | .8 | .7 | .6 | −14 | — |
| Grams per capita per day, fat content basis1 | |||||||||
| Total added fat (excludes naturally occuring fat in such foods as meats, beverage milks, nuts, and avocados)1 | 47.9 | 49.3 | 52.5 | 56.4 | 58.6 | 57.2 | 65.3 | 36 | 65.3 |
| Tablespoons per capita per day, fat content basis1 | |||||||||
| 3.5 | 3.6 | 3.9 | 4.1 | 4.3 | 4.2 | 4.8 | 37 | na | |
| The Dietary guidelines recommend that people limit their total fat consumption to no more than 30 percent of daily energy intake—about 73 grams of added and naturally occurring fat for a 2,200-calorie diet. In 2000, added fats alone accounted for 97 percent of this suggested upper limit. | |||||||||
| Notes: na = not applicable or not available.—= less than 0.05 grams. Totals may not add due to rounding. | |||||||||
| 1Adjusted for cooking losses, plate waste, and other losses. Includes only the cream portions of half and half and eggnog; the milk portions are included in the daily group. Fat content of butter and margarine calculated at 80 percent. One gram of fat equals 9 calories. One tablespoon of fat equals approximately 13.6 grams of fat. | |||||||||
| 2Aggregate data, unadjusted for cooking losses, plate waste, and other losses. | |||||||||
| 3Excludes use in margarine and shortening. | |||||||||
| 4Specialty fats used mainly in confections and nondairy creamers. | |||||||||
| SOURCE: Judy Putnam, Jane Allshouse, and Linda Scott Kantor, "Table 2. Americans Consumed an Average of 65 Grams, or 600 Calories' Worth, of Added Fats Per Person Per Day in 2000," in U.S. Per Capita Food Supply Trends: More Calories, Refined Carbohydrates, and Fats, Food and Rural Economics Division, Economic Research Service, U.S. Department of Agriculture (USDA), Washington, DC, 2002 [Online] http://www.ers.usda.gov/publications/FoodReview/dec2002/ [accessed February 3, 2004] | |||||||||
French fries with the previously time-consuming, labor-intensive process of scrubbing, peeling, paring, and frying required to prepare French fries. They observed that during the 1960s women spent an average of two hours a day on meal preparation—twice as long as the average American nonworking woman devotes to meal preparation today. It takes considerably less time today to prepare food because of advances in food processing and packaging. Further, technology improvements in the home, such as the microwave oven, have made it easier to eat quickly on demand.
The Harvard researchers' conclusion was that increased food consumption is the direct "result of technological innovations which made it possible for food to be mass prepared far from the point of consumption, and consumed with lower time costs of preparation and cleaning. Price changes are normally beneficial, but may not be if people have self-control problems." The study found that the average number of daily snacks between meals has risen by 60 percent since the late 1970s. Unable to resist the tempting, affordable variety of foods, Americans engage in more frequent snacking, consuming the excess calories that ultimately result in overweight.
Is the Food Industry the Culprit?
Kelly Brownell, director of the Yale Center for Eating and Weight Disorders and co-author, with Katherine Horgen, of Food Fight: The Inside Story of the Food Industry, America's Obesity Crisis, and What We Can Do About It (New York: McGraw-Hill, 2003), cited a "near-total surrender to a powerful food industry" as one of the main causes of the obesity epidemic in the United States. Brownell and Horgen contend that the obesity epidemic represents more than a failure of Americans to assume personal responsibility and exercise willpower over their appetites. They exhort consumers to agitate against a food industry intent on fattening them and to work to counteract a variety of unhealthy social trends. The authors lament the super-sized meals and sedentary lifestyles, including Americans' "car-centric" culture that actively discourages walking and encourages children
TABLE 1.10
Food away from home, total expenditures, 1929–2002
| Year | Eating & drinking places1 | Hotels & motels1 | Retail stores, direct selling2 | Recreational places3 | Schools & colleges4 | All other5 | Total6 |
| in millions of dollars | |||||||
| 1929 | 2,101 | 362 | — | — | 175 | 1,483 | 4,121 |
| 1933 | 1,235 | 250 | — | — | 105 | 869 | 2,459 |
| 1935 | 1,257 | 271 | — | — | 161 | 1,145 | 2,834 |
| 1936 | 1,430 | 320 | — | — | 175 | 1,236 | 3,161 |
| 1937 | 1,696 | 351 | — | — | 194 | 1,375 | 3,616 |
| 1938 | 1,626 | 312 | — | — | 191 | 1,260 | 3,389 |
| 1939 | 1,782 | 321 | — | — | 203 | 1,307 | 3,613 |
| 1940 | 1,938 | 353 | — | — | 219 | 1,385 | 3,895 |
| 1941 | 2,369 | 386 | — | — | 263 | 1,781 | 4,799 |
| 1942 | 2,992 | 453 | — | — | 310 | 2,539 | 6,294 |
| 1943 | 3,837 | 604 | — | — | 332 | 3,572 | 8,345 |
| 1944 | 4,471 | 681 | — | — | 326 | 4,415 | 9,893 |
| 1945 | 5,218 | 736 | — | — | 373 | 4,908 | 11,235 |
| 1946 | 5,859 | 846 | — | — | 525 | 3,802 | 11,032 |
| 1947 | 6,243 | 854 | — | — | 842 | 3,864 | 11,803 |
| 1948 | 6,338 | 846 | — | — | 983 | 4,069 | 12,236 |
| 1949 | 6,294 | 786 | — | — | 979 | 3,943 | 12,002 |
| 1950 | 6,472 | 774 | — | — | 1,051 | 4,172 | 12,469 |
| 1951 | 7,172 | 783 | — | — | 1,124 | 5,167 | 14,246 |
| 1952 | 7,549 | 805 | — | — | 1,138 | 5,435 | 14,927 |
| 1953 | 7,834 | 790 | — | — | 1,215 | 5,392 | 15,231 |
| 1954 | 8,008 | 752 | 1,416 | 274 | 1,311 | 3,676 | 15,437 |
| 1955 | 8,490 | 809 | 1,468 | 313 | 1,390 | 3,539 | 16,009 |
| 1956 | 8,992 | 875 | 1,534 | 354 | 1,530 | 3,506 | 16,791 |
| 1957 | 9,409 | 932 | 1,592 | 342 | 1,661 | 3,609 | 17,545 |
| 1958 | 9,447 | 922 | 1,599 | 356 | 1,809 | 3,756 | 7,889 |
| 1959 | 10,102 | 982 | 1,677 | 385 | 1,949 | 3,739 | 18,834 |
| 1960 | 10,505 | 1,028 | 1,716 | 421 | 2,082 | 3,855 | 19,607 |
| 1961 | 10,907 | 1,061 | 1,740 | 452 | 2,264 | 3,961 | 20,385 |
| 1962 | 11,624 | 1,134 | 1,812 | 472 | 2,463 | 4,090 | 21,595 |
| 1963 | 12,247 | 1,200 | 1,854 | 484 | 2,624 | 4,148 | 22,557 |
| 1964 | 13,156 | 1,289 | 1,988 | 496 | 2,814 | 4,279 | 24,022 |
| 1965 | 14,444 | 1,409 | 2,162 | 522 | 3,062 | 4,598 | 26,197 |
| 1966 | 15,768 | 1,541 | 2,346 | 544 | 3,329 | 5,173 | 28,701 |
| 1967 | 16,595 | 1,623 | 2,436 | 563 | 3,632 | 5,570 | 30,419 |
| 1968 | 18,695 | 1,703 | 2,713 | 616 | 3,903 | 5,830 | 33,460 |
| 1969 | 20,207 | 1,716 | 2,984 | 661 | 4,256 | 6,291 | 36,115 |
| 1970 | 22,617 | 1,894 | 3,325 | 721 | 4,475 | 6,551 | 39,583 |
| 1971 | 24,166 | 2,086 | 3,626 | 762 | 4,990 | 6,621 | 42,251 |
| 1972 | 27,167 | 2,390 | 3,811 | 832 | 5,370 | 7,017 | 46,587 |
| 1973 | 31,265 | 2,639 | 4,218 | 963 | 5,605 | 7,960 | 52,650 |
| 1974 | 34,029 | 2,864 | 4,520 | 1,167 | 6,287 | 9,178 | 58,045 |
| 1975 | 41,384 | 3,199 | 4,952 | 1,369 | 7,060 | 10,145 | 68,109 |
| 1976 | 47,536 | 3,769 | 5,341 | 1,511 | 7,854 | 10,822 | 76,833 |
| 1977 | 52,491 | 4,115 | 5,663 | 2,606 | 8,413 | 11,547 | 84,835 |
| 1978 | 60,042 | 4,863 | 6,323 | 2,810 | 9,034 | 13,012 | 96,084 |
| 1979 | 68,872 | 5,551 | 7,157 | 2,921 | 9,914 | 14,756 | 109,171 |
to sit in front of television, video games, and computers while eliminating physical education classes from schools, but they insist that the food industry bears the lion's share of responsibility for the rise in obesity. They argue that America feeds its pets better than its children, and that children are induced and manipulated by food industry media advertising to adopt poor eating habits and to consume high-calorie, low-nutrition junk food.
Brownell and Horgen cite toy giveaways, movie tie-ins, and in-school promotions as evidence of effective strategies employed by the politically powerful food industry to promote fast-food consumption. They feel that the battle against these pervasive influences is one that parents cannot win because even children receiving consistent, sound nutritional counseling from parents are not immune to the effects of multiple, powerful exposures to media advertising. The authors call for a nationwide, grassroots movement to reverse these trends and advocate specific measures such as junk-food taxes and banning ads that target children.
Greg Critser also indicts the food industry in Fat Land: How Americans Became the Fattest People in the World (New York: Houghton Mifflin Co., 2003). The nutrition journalist presents a critical analysis of the many social and economic factors that make Americans among the most overweight people in the world. Critser believes that chief among these factors is high fructose corn syrup, a low-cost sweetener that was developed by Japanese scientists in response to an overabundance of cheap corn. Corn syrup does more than sweeten, it also acts as a preservative, giving sweet foods longer shelf lives. Since the 1970s, high-fructose (a very sweet sugar) corn syrup has been used to sweeten nearly every product on super-market
TABLE 1.10
Food away from home, total expenditures, 1929–2002
| Year | Eating & drinking places1 | Hotels & motels1 | Retail stores, direct selling2 | Recreational places3 | Schools & colleges4 | All other5 | Total6 |
| in millions of dollars | |||||||
| 1980 | 75,883 | 5,906 | 8,158 | 3,040 | 11,115 | 16,194 | 120,296 |
| 1981 | 83,358 | 6,639 | 8,830 | 2,979 | 11,357 | 17,751 | 130,914 |
| 1982 | 90,390 | 6,888 | 9,256 | 2,887 | 11,692 | 18,663 | 139,776 |
| 1983 | 98,710 | 7,660 | 9,827 | 3,271 | 12,338 | 19,077 | 150,883 |
| 1984 | 105,836 | 8,409 | 10,315 | 3,489 | 12,950 | 20,047 | 161,046 |
| 1985 | 111,760 | 9,168 | 10,499 | 3,737 | 13,534 | 20,133 | 168,831 |
| 1986 | 121,699 | 9,665 | 11,116 | 4,059 | 14,401 | 20,755 | 181,695 |
| 1987 | 137,255 | 11,117 | 11,860 | 4,331 | 13,370 | 21,122 | 199,055 |
| 1988 | 151,138 | 11,905 | 12,973 | 4,669 | 13,934 | 22,542 | 217,160 |
| 1989 | 160,657 | 12,179 | 14,153 | 5,658 | 14,644 | 24,198 | 231,490 |
| 1990 | 172,024 | 12,508 | 15,764 | 6,798 | 15,598 | 25,773 | 248,465 |
| 1991 | 180,405 | 12,460 | 16,514 | 7,592 | 16,784 | 26,645 | 260,400 |
| 1992 | 182,327 | 13,204 | 13,586 | 8,602 | 17,755 | 27,946 | 263,420 |
| 1993 | 195,836 | 13,362 | 13,798 | 9,275 | 18,386 | 28,029 | 278,685 |
| 1994 | 205,768 | 13,880 | 14,203 | 9,791 | 19,361 | 28,208 | 291,211 |
| 1995 | 214,159 | 14,188 | 14,332 | 10,568 | 20,141 | 28,593 | 301,982 |
| 1996 | 221,834 | 14,510 | 14,466 | 11,360 | 20,941 | 28,985 | 312,095 |
| 1997 | 235,930 | 15,490 | 14,431 | 9,172 | 22,025 | 30,936 | 327,983 |
| 1998 | 249,310 | 15,835 | 15,231 | 10,019 | 23,233 | 31,944 | 345,573 |
| 1999 | 260,392 | 16,675 | 16,562 | 10,673 | 24,235 | 33,506 | 362,043 |
| 2000 | 280,742 | 17,479 | 16,821 | 11,351 | 24,848 | 34,501 | 385,743 |
| 2001 | 289,462 | 17,923 | 17,426 | 11,751 | 26,255 | 35,261 | 398,077 |
| 2002 | 304,606 | 17,912 | 18,274 | 11,843 | 26,978 | 35,344 | 414,957 |
| —= Not available. | |||||||
| 1Includes tips. | |||||||
| 2Includes vending machine operators but not vending machines operated by organization. | |||||||
| 3Motion picture theaters, bowling alleys, pool parlors, sports arenas, camps, amusement parks, golf and country clubs (includes concessions beginning in 1977). | |||||||
| 4Includes school food subsidies. | |||||||
| 5Military exchanges and clubs; railroad dining cars; airlines; food service in manufacturing plants, institutions, hospitals, boarding houses, fraternities and sororities, and civic and social organizations; and food supplied to military forces, civilian employees, and child day care. | |||||||
| 6Computed from unrounded data. | |||||||
| SOURCE: "Table 3. Food away from Home: Total expenditures," in Food CPI, Prices, and Expenditures: Food away from Home, U.S. Department of Agriculture (USDA), Washington, DC, 2003 [Online] http://www.ers.usda.gov/briefing/CPIFoodAndExpenditures/Data/table3.htm [accessed February 2, 2004] | |||||||
shelves, from cereal to soda. Some researchers feel that because it is so ubiquitous, many Americans are unknowingly consuming excessive amounts of fructose. Table 1.11 shows increasing consumption of high fructose corn syrup, which more than tripled from 1980 to 2002.
Unfortunately, fructose also appears to trigger fat storage more efficiently than other sugars do. New studies are showing the body does not metabolize high-fructose corn syrup well. Although all sugars are stored in the body as fat, some researchers think that fructose is more readily converted into fat than other sugars. The fructose encourages the liver to promote fat by activating enzymes that create higher levels of cholesterol and triglycerides, and make muscles more insulin-resistant. Elevated levels of cholesterol and triglycerides, fatty substances normally present in the bloodstream and all cells of the body, increase the risk of coronary heart disease. Insulin resistance can lead to diabetes.
Critser also explained that once the staples used to produce fast foods became cheaper, the industry intensified marketing efforts to induce consumers to buy and eat more. Table 1.12 shows that food expenditures have consistently decreased as a percent of disposable personal income, declining from almost one-quarter of personal disposable income in 1930 to just 10.1 percent in 2002. He observes that a serving of McDonald's French fries "ballooned from 200 calories (1960) … to the present 610 calories" and that Americans' appetites grew to expect and demand the bigger servings. Critser noted that changing values and lifestyles conspired to fatten Americans. He described the rise of a "new boundary-free culture" that promoted consumption of sugary and fat-laden foods. Traditionally, families convened for home-cooked dinners, but Critser described the rushed parents of the 1980s as preferring to eat out or take in prepared foods. Childcare experts popularized the theory that children instinctively knew when they were sated and encouraged busy parents to relinquish control over their children's food consumption. In some parts of the country, budget cuts prompted schools to allow fast-food franchises to sell lunches and snacks to students on the school campuses. Finally, Critser observed that to accommodate—or even camouflage—Americans' expanding bodies, clothing manufacturers marketed large, loose-fitting clothing.
TABLE 1.11
Per capita caloric sweeteners, estimated deliveries for domestic food and beverage use, by calendar year, 1966–20021, 2
| Corn sweeteners | |||||||||
| Calendar year | U.S. population (July 1) | Refined sugar3 | High-fructose corn syrup | Glucose syrup | Dextrose | Total | Pure honey | Edible syrups | Total caloric sweeteners |
| Millions | Pounds, dry basis | ||||||||
| 1966 | 196.6 | 97.3 | 0.0 | 9.7 | 4.2 | 13.9 | 1.0 | 0.7 | 112.9 |
| 1967 | 198.7 | 98.5 | 0.0 | 9.9 | 4.3 | 14.2 | 0.9 | 0.5 | 114.2 |
| 1968 | 200.7 | 99.2 | 0.1 | 10.3 | 4.4 | 14.8 | 0.9 | 0.7 | 115.7 |
| 1969 | 202.7 | 101.0 | 0.3 | 10.5 | 4.5 | 15.3 | 1.0 | 0.6 | 117.9 |
| 1970 | 205.1 | 101.8 | 0.5 | 10.7 | 4.6 | 15.9 | 1.0 | 0.5 | 119.1 |
| 1971 | 207.7 | 102.1 | 0.8 | 11.2 | 4.6 | 16.7 | 0.9 | 0.5 | 120.2 |
| 1972 | 209.9 | 102.3 | 1.2 | 12.0 | 4.6 | 17.8 | 1.0 | 0.5 | 121.5 |
| 1973 | 211.9 | 100.8 | 2.1 | 13.1 | 4.6 | 19.7 | 0.9 | 0.5 | 122.0 |
| 1974 | 213.9 | 95.7 | 2.8 | 13.8 | 4.5 | 21.2 | 0.7 | 0.4 | 117.9 |
| 1975 | 216.0 | 89.2 | 4.9 | 14.0 | 4.4 | 23.3 | 1.0 | 0.4 | 113.8 |
| 1976 | 218.0 | 93.4 | 7.2 | 13.9 | 4.1 | 25.2 | 0.9 | 0.4 | 119.9 |
| 1977 | 220.2 | 94.2 | 9.6 | 13.8 | 3.9 | 27.3 | 0.9 | 0.4 | 122.8 |
| 1978 | 222.6 | 91.4 | 10.8 | 13.9 | 3.7 | 28.4 | 1.1 | 0.4 | 121.3 |
| 1979 | 225.1 | 89.3 | 14.8 | 13.5 | 3.5 | 31.8 | 1.0 | 0.4 | 122.6 |
| 1980 | 227.7 | 83.6 | 19.0 | 12.9 | 3.5 | 35.3 | 0.8 | 0.4 | 120.2 |
| 1981 | 230.0 | 79.4 | 22.8 | 12.9 | 3.4 | 39.1 | 0.8 | 0.4 | 119.8 |
| 1982 | 232.2 | 73.7 | 26.6 | 12.7 | 3.4 | 42.7 | 0.9 | 0.4 | 117.7 |
| 1983 | 234.3 | 70.3 | 31.2 | 13.0 | 3.4 | 47.6 | 1.0 | 0.4 | 119.3 |
| 1984 | 236.3 | 66.7 | 37.2 | 13.1 | 3.5 | 53.8 | 0.9 | 0.4 | 121.8 |
| 1985 | 238.5 | 62.7 | 45.2 | 13.5 | 3.5 | 62.2 | 0.9 | 0.4 | 126.2 |
| 1986 | 240.7 | 60.0 | 45.7 | 13.6 | 3.6 | 62.8 | 1.0 | 0.4 | 124.3 |
| 1987 | 242.8 | 62.4 | 47.7 | 13.8 | 3.6 | 65.2 | 0.9 | 0.4 | 128.8 |
| 1988 | 245.0 | 62.1 | 49.0 | 14.3 | 3.7 | 66.9 | 0.8 | 0.4 | 130.2 |
| 1989 | 247.3 | 62.8 | 48.2 | 12.8 | 3.5 | 64.6 | 0.8 | 0.4 | 128.5 |
| 1990 | 250.1 | 64.4 | 49.6 | 13.6 | 3.6 | 66.8 | 0.8 | 0.4 | 132.4 |
| 1991 | 253.5 | 63.6 | 50.3 | 14.0 | 3.7 | 68.0 | 0.9 | 0.4 | 132.9 |
| 1992 | 256.9 | 64.2 | 51.8 | 15.1 | 3.6 | 70.5 | 1.0 | 0.4 | 136.1 |
| 1993 | 260.3 | 63.8 | 54.5 | 15.8 | 3.7 | 73.9 | 1.0 | 0.4 | 139.1 |
| 1994 | 263.4 | 64.4 | 56.2 | 15.9 | 3.8 | 75.9 | 1.0 | 0.4 | 141.6 |
| 1995 | 266.6 | 64.9 | 57.6 | 16.3 | 4.0 | 77.9 | 0.9 | 0.4 | 144.1 |
| 1996 | 269.7 | 65.2 | 57.8 | 16.4 | 4.0 | 78.2 | 1.0 | 0.4 | 144.7 |
| 1997 | 272.9 | 64.9 | 60.4 | 17.3 | 3.7 | 81.5 | 0.9 | 0.4 | 147.7 |
| 1998 | 276.1 | 65.1 | 61.9 | 17.1 | 3.6 | 82.7 | 0.9 | 0.4 | 149.0 |
| 1999 | 279.3 | 66.3 | 63.7 | 16.3 | 3.5 | 83.5 | 1.1 | 0.4 | 151.3 |
| 2000 | 282.4 | 65.5 | 62.7 | 15.8 | 3.4 | 81.9 | 1.1 | 0.4 | 148.9 |
| 2001 | 285.5 | 64.4 | 62.5 | 15.4 | 3.3 | 81.3 | 0.9 | 0.4 | 147.0 |
| 2002 | 288.6 | 63.2 | 62.7 | 15.4 | 3.3 | 81.4 | 1.1 | 0.4 | 146.1 |
| 1Per capita deliveries of sweeteners by U.S. processors and refiners and direct-consumption imports to food manufacturers, retailers, and other end users represent the per capita supply of caloric sweeteners. The data exclude deliveries to manufacturers of alcoholic beverages. Actual human intake of caloric sweeteners is lower because of uneaten food, spoilage, and other losses. | |||||||||
| 2Totals may not add due to rounding. | |||||||||
| 3Based on sugar deliveries for domestic food and beverage use. | |||||||||
| SOURCE: "Table 50. U.S. per Capita Caloric Sweeteners: Estimated Deliveries for Domestic Food and Beverage Use, by Calendar Year," in Sugar and Sweetener: Data Tables, Economic Research Service, U.S. Department of Agriculture (USDA), Washington, DC, 2003 [Online] http://www.ers.usda.gov/briefing/sugar/Data/data.htm [accessed February 2, 2004] | |||||||||
TABLE 1.12
Food expenditures by families and individuals as a share of disposable personal income, 1929–2002
| Expenditures for food | |||||||
| Year | Disposable personal income | At home1 | Away from home2 | Total3 | |||
| Billion dollars | Billion dollars | Percent | Billion dollars | Percent | Billion dollars | Percent | |
| 1929 | 83.2 | 16.9 | 20.3 | 2.6 | 3.1 | 19.5 | 23.5 |
| 1930 | 74.6 | 15.8 | 21.2 | 2.3 | 3.1 | 18.1 | 24.3 |
| 1931 | 64.2 | 12.7 | 19.8 | 2.1 | 3.3 | 14.8 | 23.1 |
| 1932 | 49.1 | 9.6 | 19.6 | 1.7 | 3.5 | 11.3 | 23 |
| 1933 | 45.9 | 10.1 | 22 | 1.5 | 3.3 | 11.6 | 25.3 |
| 1934 | 52.7 | 11.1 | 21.1 | 1.7 | 3.2 | 12.8 | 24.3 |
| 1935 | 59.2 | 12.1 | 20.4 | 1.8 | 3 | 13.9 | 23.5 |
| 1936 | 67.3 | 12.7 | 18.9 | 2 | 3 | 14.7 | 21.8 |
| 1937 | 72.2 | 13.3 | 18.4 | 2.2 | 3 | 15.5 | 21.5 |
| 1938 | 66.5 | 12.6 | 18.9 | 2.1 | 3.2 | 14.7 | 22.1 |
| 1939 | 71.4 | 13 | 18.1 | 2.3 | 3.2 | 15.2 | 21.3 |
| 1940 | 76.7 | 13.5 | 17.6 | 2.4 | 3.1 | 15.9 | 20.7 |
| 1941 | 93.8 | 15.3 | 16.3 | 2.9 | 3.1 | 18.2 | 19.4 |
| 1942 | 118.7 | 18.5 | 15.5 | 3.6 | 3 | 22.1 | 18.6 |
| 1943 | 135.4 | 20.7 | 15.3 | 4.5 | 3.3 | 25.2 | 18.6 |
| 1944 | 148.3 | 22.1 | 14.9 | 5.1 | 3.4 | 27.2 | 18.4 |
| 1945 | 152.1 | 23.6 | 15.5 | 5.7 | 3.7 | 29.3 | 19.2 |
| 1946 | 162 | 28.4 | 17.5 | 6.5 | 4 | 34.9 | 21.5 |
| 1947 | 172.1 | 32.8 | 19.1 | 7.4 | 4.3 | 40.2 | 23.4 |
| 1948 | 191.6 | 34.9 | 18.2 | 7.5 | 3.9 | 42.4 | 22.1 |
| 1949 | 191.1 | 34.3 | 17.9 | 7.8 | 4.1 | 42 | 22 |
| 1950 | 210.6 | 35.7 | 16.9 | 7.6 | 3.6 | 43.3 | 20.5 |
| 1951 | 231.2 | 40 | 17.3 | 8.4 | 3.6 | 48.4 | 20.9 |
| 1952 | 243.6 | 41.8 | 17.2 | 8.8 | 3.6 | 50.6 | 20.8 |
| 1953 | 258.8 | 42.3 | 16.4 | 9 | 3.5 | 51.3 | 19.8 |
| 1954 | 264.5 | 42.4 | 16 | 9.3 | 3.5 | 51.7 | 19.5 |
| 1955 | 283.4 | 42.9 | 15.1 | 9.8 | 3.5 | 52.7 | 18.6 |
| 1956 | 302.8 | 44.4 | 14.7 | 10.4 | 3.4 | 54.8 | 18.1 |
| 1957 | 319.7 | 48.1 | 15 | 10.9 | 3.4 | 59 | 18.4 |
| 1958 | 330.8 | 49.8 | 15.1 | 11.1 | 3.4 | 60.9 | 18.4 |
| 1959 | 351.2 | 50.1 | 14.3 | 12.1 | 3.5 | 62.3 | 17.7 |
| 1960 | 366.2 | 51.5 | 14.1 | 12.6 | 3.4 | 64 | 17.5 |
| 1961 | 382.4 | 52 | 13.6 | 13.1 | 3.4 | 65.1 | 17 |
| 1962 | 405.6 | 52.9 | 13.1 | 13.9 | 3.4 | 66.8 | 16.5 |
| 1963 | 425.8 | 53.3 | 12.5 | 14.5 | 3.4 | 67.9 | 15.9 |
| 1964 | 463 | 55.5 | 12 | 15.7 | 3.4 | 71.2 | 15.4 |
| 1965 | 498.9 | 58.4 | 11.7 | 16.9 | 3.4 | 75.4 | 15.1 |
| 1966 | 539.1 | 61 | 11.3 | 18.6 | 3.5 | 79.6 | 14.8 |
| 1967 | 576.2 | 61.4 | 10.6 | 19.8 | 3.4 | 81.1 | 14.1 |
| 1968 | 626.2 | 64.5 | 10.3 | 21.7 | 3.5 | 86.2 | 13.8 |
| 1969 | 675 | 69 | 10.2 | 23.4 | 3.5 | 92.3 | 13.7 |
TABLE 1.12
Food expenditures by families and individuals as a share of disposable personal income, 1929–2002
| Expenditures for food | |||||||
| Year | Disposable personal income | At home1 | Away from home2 | Total3 | |||
| Billion dollars | Billion dollars | Percent | Billion dollars | Percent | Billion dollars | Percent | |
| 1970 | 736.5 | 75.5 | 10.3 | 26.4 | 3.6 | 102 | 13.8 |
| 1971 | 801.7 | 79.5 | 9.9 | 28.1 | 3.5 | 107.6 | 13.4 |
| 1972 | 868.6 | 86 | 9.9 | 31.3 | 3.6 | 117.3 | 13.5 |
| 1973 | 979 | 94.9 | 9.7 | 34.9 | 3.6 | 129.8 | 13.3 |
| 1974 | 1,072.30 | 107.3 | 10 | 38.5 | 3.6 | 145.8 | 13.6 |
| 1975 | 1,181.40 | 117.4 | 9.9 | 45.9 | 3.9 | 163.3 | 13.8 |
| 1976 | 1,299.90 | 125.1 | 9.6 | 52.6 | 4 | 177.7 | 13.7 |
| 1977 | 1,436.00 | 133.8 | 9.3 | 58.5 | 4.1 | 192.3 | 13.4 |
| 1978 | 1,614.80 | 147.3 | 9.1 | 67.5 | 4.2 | 214.8 | 13.3 |
| 1979 | 1,808.20 | 164 | 9.1 | 76.9 | 4.3 | 240.9 | 13.3 |
| 1980 | 2,019.80 | 180.8 | 8.9 | 85.2 | 4.2 | 266 | 13.2 |
| 1981 | 2,247.90 | 195.5 | 8.7 | 95.8 | 4.3 | 291.3 | 13 |
| 1982 | 2,406.80 | 201 | 8.4 | 104.5 | 4.3 | 305.5 | 12.7 |
| 1983 | 2,586.00 | 211.4 | 8.2 | 113.7 | 4.4 | 325.1 | 12.6 |
| 1984 | 2,887.60 | 224 | 7.8 | 121.9 | 4.2 | 345.8 | 12 |
| 1985 | 3,086.50 | 234 | 7.6 | 128.6 | 4.2 | 362.6 | 11.7 |
| 1986 | 3,262.50 | 242.7 | 7.4 | 137.9 | 4.2 | 380.6 | 11.7 |
| 1987 | 3,459.50 | 252.7 | 7.3 | 146.4 | 4.2 | 399 | 11.5 |
| 1988 | 3,752.40 | 268.3 | 7.2 | 157.5 | 4.2 | 425.9 | 11.3 |
| 1989 | 4,016.30 | 287.5 | 7.2 | 165.5 | 4.1 | 453.1 | 11.3 |
| 1990 | 4,293.60 | 302.5 | 7 | 177.7 | 4.1 | 480.3 | 11.2 |
| 1991 | 4,474.80 | 316.7 | 7.1 | 186.7 | 4.2 | 503.4 | 11.3 |
| 1992 | 4,754.60 | 316.5 | 6.7 | 190.8 | 4 | 507.3 | 10.7 |
| 1993 | 4,935.30 | 325.7 | 6.6 | 205 | 4.2 | 530.7 | 10.8 |
| 1994 | 5,165.40 | 339.7 | 6.6 | 215.8 | 4.2 | 555.5 | 10.8 |
| 1995 | 5,422.60 | 348.5 | 6.4 | 225.4 | 4.2 | 574 | 10.6 |
| 1996 | 5,677.70 | 364.1 | 6.4 | 232.9 | 4.1 | 597 | 10.5 |
| 1997 | 5,968.20 | 373.9 | 6.3 | 243.6 | 4.1 | 617.6 | 10.3 |
| 1998 | 6,355.60 | 388.2 | 6.1 | 257.1 | 4 | 645.3 | 10.2 |
| 1999 | 6,627.40 | 413.6 | 6.2 | 269.3 | 4.1 | 682.9 | 10.3 |
| 2000 | 7,120.20 | 435.9 | 6.1 | 287.7 | 4 | 723.6 | 10.2 |
| 2001 | 7,393.20 | 459.8 | 6.2 | 296.4 | 4 | 756.1 | 10.2 |
| 2002 | 7,815.50 | 481.4 | 6.2 | 309.3 | 4 | 790.7 | 10.1 |
| 1Food purchases from grocery stores and other retail outlets, including purchases with food stamps and WIC vouchers and food produced and consumed on farms (valued at farm prices) because the value of these foods is included in personal income. Excludes government-donated foods. | |||||||
| 2Purchases of meals and snacks by families and individuals, and food furnished to employees since it is included in personal income. Excludes food paid for by government and business, such as donated foods to schools, meals in prisons and other institutions, and expense-account meals. | |||||||
| 3Total may not add due to rounding. | |||||||
| SOURCE: "Table 7. Food Expenditures by Families and Individuals as a Share of Disposable Personal Income," Food CPI, Prices, and Expenditures: Food Expenditures as a Share of Disposable Income, U.S. Department of Agriculture (USDA), Washington, DC, 2003 [Online] http://www.ers.usda.gov/briefing/CPIFoodAndExpenditures/Data/table7.htm [accessed February 2, 2004] | |||||||
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