"We've taken the approach that if we make children feel bad about being fat or scare them half to death, they'll be motivated to lose excess weight," says Joanne Ikeda, nutritionist emeritus at the University of California-Berkeley, who studies pediatric obesity prevention. "It hasn't worked in adults, so what makes us think it will work in kids?" Many experts now believe that an emphasis on dropping weight rather than adding healthful nutrients and exercise is doing more harm than good.
Failure to end—or even slow—the epidemic has public-health experts, educators, and politicians in a near panic. All told, some 17 percent of kids are now obese, which means they're at or above the 95th percentile for weight in relation to height for their age; an additional 17 percent are overweight, or at or over the 85th percentile. This is despite massive government-funded education campaigns in schools, in libraries, and on TV to alert parents and kids to the dangers. "In the early 1980s, I used to see one or two kids a year with type 2 diabetes, and now I see one or two a month," says Alan Lake, an associate professor of pediatrics at the Johns Hopkins University School of Medicine. "Evidence now suggests that this type 2 diabetes progresses more rapidly in kids, which means we could be soon seeing 20-year-olds developing severe heart disease." Already, high blood pressure affects more than 2 million youngsters.
Long haul. Obesity is hard to outgrow, so about 50 percent of elementary-school kids and 80 percent of teens who are obese will battle the scales—and the greatly increased risk of disease—for the rest of their lives. A number of authorities have warned that today's youth could be the first ever to have a shorter life span than their parents.
What explains both the problem and the elusiveness of a solution? Blame the American "toxic environment." Cinnamon buns and candy are far cheaper and easier to sell at the local mall than, say, a fresh fruit cup or a packet of sliced almonds. Half of kids walked or biked to school a generation ago; today, only about 10 percent do—then they come home and plop down in front of their various screens. As if the inactivity weren't bad enough, preteens absorb more than 7,600 commercials a year for candy, sugary cereal, and fast food, according to the Kaiser Family Foundation. "They're surrounded by circumstances where the default behavior is one that encourages obesity," says Marlene Schwartz, deputy director of the Rudd Center for Food Policy and Obesity at Yale University. Busy parents contribute by stocking pantries with quick energy—sugary cereal, Fruit Roll-Ups, and Oreos—while bringing home Kentucky Fried Chicken for dinner.
Schools have taken a stab at introducing the basics of good nutrition and the four food groups. But such efforts pale beside a cutback of gym time in favor of academics and vending machines stocked with high-calorie (and high-profit-margin) snack foods. More than 90 percent of elementary schools don't provide daily physical education, according to the Robert Wood Johnson Foundation, and the share of high school students participating in daily gym has dropped from 42 percent in 1991 to 33 percent in 2005. Some states have reconsidered and passed laws to increase phys ed, but plenty of schools have yet to figure out how to comply; in California, more than half the school districts have failed to implement the 20 minutes a day of physical activity that the state law now requires, according to the California Center for Public Health Advocacy.
Corrected on : Clarified on 9/19/07: This story states that 17 percent of kids are now obese, which means they're at or above the 95th percentile for weight in relation to height. The reason that a greater percentage of kids now fall into the "top 5 percent" category is that the standard measurement charts that define obesity were created using data from the 1960s and '70s when kids weighed less than they do now.