Disappointing Diets for Children
Weight-Loss Diets Designed for Adults May Cause Children to Gain Weight
March 4, 2004 (San Francisco) -- While a low-carb diet may add up to quick weight loss in adults, preschool children who cut back on carbs are likely to end up as fat teens, according to new findings from researchers with the Framingham Children's Study, an offshoot of the ongoing Framingham Heart Study.
When children ages 3 to 5 are fed low-carb diets, the results show up during their teens, says Framingham researcher Lynn Moore, DSc, associate professor of medicine at Boston University.
And that's not all. Moore tells WebMD that both low- and high-fat diets during the formative years also add up to flabby teens.
She says that one way to protect against teenage obesity is to increase intake of dairy products among 3- to 5-year-olds. Children who averaged than more than two glasses of milk or more than two servings of cheese or yogurt a day were more than an inch slimmer as teenagers.
Moore says that the minerals calcium and magnesium are probably the major players in preventing normal-weight kids from turning into plump teens. Dairy, fruits, and vegetables all add up to leaner teenage years, she says.
Green leafy vegetables are rich in magnesium. Unrefined grains and nuts also have high magnesium content.
But kids who eat high-fat diets -- meaning that more than 35% of their calories come from fat-laden foods -- accumulate about "an inch more in body fat" by the time they reach their teens, she says. When little children are fed low-carb diets, they average about three-quarters of an inch in added girth by the teenage years.
Noting that children on low-fat diets, which were defined as diets in which less than 20% of calories came from fat, added about a third of an inch of fat to teenage bodies, Moore says, "The message of the study is moderation. Diets that have moderate amounts of fat and carbohydrates as well as dairy and fruits and vegetables are less likely to be associated with obesity during the teens."
The message for parents, says Moore, is that a diet that might lead to weight loss in adults is not useful as an obesity prevention strategy for children.