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Vivante A, Golan E, Tzur D, et al. Body Mass Index in 1.2 Million Adolescents and Risk for End-Stage Renal Disease. Arch Intern Med. 2012;172(21):1644–1650. doi:10.1001/2013.jamainternmed.85
Author Affiliations: Israeli Defense Forces Medical Corps (Drs Vivante and Leiba and Ms Tzur), Department of Pediatrics, Talpiot Medical Leadership Program, The Edmond and Lily Safra Children's Hospital (Dr Vivante), and Sheba Medical Center (Drs Vivante and Leiba), Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel Aviv University (Drs Vivante, Golan, and Leiba), Tel Aviv, Israel; and Department of Nephrology and Hypertension, Meir Medical Center, Kfar-Saba, Israel, and Israel Renal Registry (Dr Golan); Department of Nephrology, Rambam Health Care Campus, Rappaport Faculty of Medicine and Research Institute, Technion–Israel Institute of Technology, Haifa, Israel (Dr Skorecki); Hebrew University–Hadassah Braun School of Public Health, Jerusalem, Israel (Dr Calderon-Margalit); and Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts (Dr Tirosh).
Background The relationship between adolescent body mass index (BMI) and future risk for end-stage renal disease (ESRD) is not fully understood, nor is it known the extent to which this association is limited to diabetic ESRD. We evaluated the association between BMI in adolescence and the risk for all-cause, diabetic, and nondiabetic ESRD.
Methods Medical data about 1 194 704 adolescents aged 17 years who had been examined for fitness for military service between January 1, 1967, and December 31, 1997, were linked to the Israeli ESRD registry in this nationwide population-based retrospective cohort study. Incident cases of treated ESRD between January 1, 1980, and May 31, 2010, were included. Cox proportional hazards models were used to estimate the hazard ratio (HR) for treated ESRD among study participants for their BMI at age 17 years, defined in accord with the US Centers for Disease Control and Prevention BMI for age and sex classification.
Results During 30 478 675 follow-up person-years (mean [SD], 25.51 [8.77] person-years), 874 participants (713 male and 161 female) developed treated ESRD, for an overall incidence rate of 2.87 cases per 100 000 person-years. Compared with adolescents of normal weight, overweight adolescents (85th to 95th percentiles of BMI) and obese adolescents (≥95th percentile of BMI) had an increased future risk for treated ESRD, with incidence rates of 6.08 and 13.40 cases per 100 000 person-years, respectively. In a multivariate model adjusted for sex, country of origin, systolic blood pressure, and period of enrollment in the study, overweight was associated with an HR of 3.00 (95% CI, 2.50-3.60) and obesity with an HR of 6.89 (95% CI, 5.52-8.59) for all-cause treated ESRD. Overweight (HR, 5.96; 95% CI, 4.41-8.06) and obesity (HR, 19.37; 95% CI, 14.13-26.55) were strong and independent risk factors for diabetic ESRD. Positive associations of overweight (HR, 2.17; 95% CI, 1.71-2.74) and obesity (HR, 3.41; 95% CI, 2.42-4.79) with nondiabetic ESRD were also documented.
Conclusions Overweight and obesity in adolescents were associated with significantly increased risk for all-cause treated ESRD during a 25-year period. Elevated BMI constitutes a substantial risk factor for diabetic and nondiabetic ESRD.
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