The crisis of obesity in America has reached epidemic proportions, and it's affecting everyone, even our children. Now, new research suggests that children in the upper half of their normal weight range are more likely to become overweight or obese young adults than their leaner counterparts.
Researchers recorded the height, weight and blood pressure of 314 Massachusetts children, ages 8-15 years old at baseline, between 1978 and 1981. These values were measured in the same participants eight to 12 years later. Participants averaged a mean body mass index (BMI) of 20 kg/m2 at the first childhood visit, with a "prevalence of at risk for overweight or overweight at the first childhood visit [of] 34 percent for girls and 32 percent for boys," according to the authors of the study.
Results: At follow-up, 48.3 percent of the boys and 23.5 percent of the girls were overweight or obese. High blood pressure was more prominent among the boys (12.3%) than girls (1.9%) as well. According to the authors, "Children with a BMI between the national 85th and 95th percentiles for age and gender were classified as at risk for overweight, and those with a BMI > 95th percentile were classified as overweight." BMI between the 50th and 84th percentile was considered to be at the high end of a normal weight range.
The researchers concluded, "Although very lean children are unlikely to become overweight adults, we observed that children in the upper end of the healthy weight range (e.g., 50th to 84th percentiles) are at an elevated risk of becoming overweight or obese. Furthermore, boys in the upper end of the healthy weight range are at an increased risk of becoming hypertensive. These findings suggest that future interventions to prevent adult obesity and its complications should include not only overweight children, but also children and adolescents as low as the 50th percentile of BMI for age and gender."
Source
- Field AE, Cook NR, Gillman MW. Weight status in childhood as a predictor of becoming overweight or hypertensive in early adulthood. Obesity Research January 2005;13(1):163-69.
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