Obesity and chronic kidney disease are epidemic size. Chronic kidney disease (CKD) appears to be more common in obese, although interrelation is not supported by all authors.
Aim: The aim of the study was to investigate the effects of overweight and obesity on glomerular filtration rate (GFR) and the relationship between body mass index (BMI) and other risk factors for CKD.
Methods: This is a cross-sectional study on 627 patients admitted in a Nephrology Department between January 2007 - December 2011. Patients were divided according to eGFR in a CKD group and a non-CKD group. Patients were divided based on BMI in: normal (<25 kg/m2), overweight (≥ 25 kg/m2 and ≤30 kg/m2) and obese (>30 kg/m2). Demographical, clinical and laboratory data (serum creatinine, lipid parameters, etc) were used for the statistical analysis. The relationship between BMI (as a marker of obesity and overweight), glomerular filtration rate and other possible risk factors for chronic kidney disease was studied.
Results: 43.70% patients were obese and 33.17% overweight. CKD prevalence was 58.69%. Logistic regression analysis showed that systolic blood pressure was the main determinant of CKD in our patients.
Conclusion: Lack of association between BMI and CKD was demonstrated in our study.