Obesity researcher Michael I. Goran, professor of preventive medicine in the Keck School of Medicine of USC, said sugary foods are making up a growing chunk of kids’ daily diets.
As a result, he and his colleagues – research associate Jaimie Davis and research assistant Emily Ventura – are conducting a two-year study with teen-age girls on the effect of a program that lowers their sugar consumption – in exchange for foods higher in fiber and complex carbohydrates.
The study will evaluate how dietary carbohydrates affect obesity and risk factors for diabetes, such as insulin values.
“Kids today are getting too much of their caloric intake from sugar,” said Goran, associate director of the USC Institute for Health Promotion and Disease Prevention Research. “We’re working on ways to replace that sugar with fiber and more complex carbohydrates that have nutritional value.”
About 40 overweight teen-age Latinas in the Los Angeles area will be enrolled in the study. They will complete questionnaires about their diet and will work with a nutrition educator, who will help them adopt healthier eating habits.
Researchers will evaluate weight and insulin values throughout the pilot study. They also will test a new 12-week curriculum, comparing its effectiveness in a class setting against its delivery through an individual nutrition coach.
Such efforts are becoming more important as researchers recognize the relationships between eating habits and chronic illness.
Worldwide, the average person in the late 1990s ate 450 calories a day more than in the mid-1960s, according to the World Health Organization (WHO). In industrialized countries, such as the United States, caloric intake grew by about 430 calories a day during these 40 years.
Other research shows that Americans got 83 more calories a day from sugary sweeteners (such as glucose, high-fructose corn syrup and sucrose) in 2000 than in 1962. That means sugary foods comprise 16 percent of Americans’ daily calories (up from 13 percent in 1962).
Among Latino children, Goran says, research shows that about 20 percent of calories are consumed as sugar – twice the WHO’s recommendation of 10 percent. Much of the sugar consumption comes from sugary beverages; Latino children in Los Angeles consume about two to three sugary beverages a day, he said.
Consuming more calories contributes to obesity, which has been implicated in a number of diseases. But high consumption of refined sugars specifically also has health researchers concerned.