sábado, 12 de marzo de 2011

Adiposity, Biological Markers of Disease, and Insulin Resistance | Preventing Chronic Disease: March 2011: 10_0006




Volume 8: No. 2, March 2011

ORIGINAL RESEARCH
Adiposity, Biological Markers of Disease, and Insulin Resistance in Mexican American Adolescents, 2004-2005

Anne R. Rentfro, PhD, RN; Jeanette C. Nino, MS; Rosa M. Pones, MPH, RN; Wendy Innis-Whitehouse, PhD; Cristina S. Barroso, DrPH; Mohammed H. Rahbar, PhD; Joseph B. McCormick, MD, MS; Susan P. Fisher-Hoch, MD, MBBS, MSc, MRCPath

Suggested citation for this article: Rentfro AR, Nino JC, Pones RM, Innis-Whitehouse W, Barroso CS, Rahbar MH, et al. Adiposity, biological markers of disease, and insulin resistance in Mexican American adolescents, 2004-2005. Prev Chronic Dis 2011;8(2).

http://www.cdc.gov/pcd/issues/2011/mar/10_0006.htm. Accessed [date].


PEER REVIEWED

Abstract
Introduction
Rates of obesity and overweight, which frequently lead to type 2 diabetes, have increased dramatically among US children during the past 30 years. We analyzed associations between insulin resistance and other markers of disease in a sample of Mexican American adolescents from a severely disadvantaged community on the Texas-Mexico border.

Methods
We analyzed results from 325 students from 1 high school in this descriptive study. We measured height, weight, waist circumference, blood pressure, blood glucose, and lipids; calculated body mass index; and estimated insulin resistance.

Results
Approximately 50% of our sample (mean age, 16 y) were overweight or obese, and more participants were obese than overweight. More than 40% had high waist circumference, and 66% had elevated high-density lipoprotein cholesterol. These characteristics were already present in the youngest participants (aged 12 y). Although only 1% of participants had elevated fasting blood glucose, 27% exhibited insulin resistance and most of these were also obese. Similarly, participants with high waist circumference were more likely to exhibit insulin resistance than those with normal waist circumference.

Conclusion
Participants in this sample had insulin resistance, a potent predictor of diabetes. Two markers, low high-density lipoprotein cholesterol and high waist circumference, were strongly linked to insulin resistance; the surrogate for central adiposity, waist circumference, exhibited strong association. We identified high levels of obesity and markers for future disease in our sample. These findings emphasize the need to address insulin resistance at least as early as adolescence to prevent adverse economic, social, and health consequences.

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Preventing Chronic Disease: March 2011: 10_0006

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