Resumen

VILELA SANGAY, Ana Rosa  y  CIEZA ZEVALLOS, Javier Antonio. Body features, dietary habits and renal function of healthy middle class people between 20 and 80 years of age in Lima. Rev Med Hered [online]. 2018, vol.29, n.4, pp.217-225. ISSN 1018-130X.  http://dx.doi.org/https://doi.org/10.20453/rmh.v29i4.3446.

Objectives: To describe changes in body water, lean body mass, fatty content, creatinine and urea clearance and dietary habits of healthy persons in Lima. Methods: Persons of both sexes between 20 and 80 years with normal body mass index, self-sufficient, with satisfactory quality of life and without chronic renal disease were included in the study. Electric bio impedance was used to get body structural data. Renal function was measured with creatinine clearance, serum creatinine and urea. Dietary features were inferred from urea, sodium and potassium measurements from a urine sample. Results: A statistical significant difference in sexes was found for body water, fatty content, lean body mass, creatinine (in serum and urine) and urea. Lean body mass was directly correlated with body water (r=0.81; p=0.000 in males and r=0.465; p=0.000 in females) and inversely correlated with fatty content. The multivariate lineal regression analysis only found correlation of lean body mass, fatty content and body water with age, but changes in these variables differed between males and females. Serum urea and creatinine did not change with age, but the clearance of both of them did it. Urea clearance showed linear correlation in males but cubic in females. A negative correlation between age and protein intake was observed (r=-0.594; p=0.006), sodium salt (r=-0.451; p=0.021) and with potassium in females. Conclusions: Body structure, glomerular filtration and dietary habits change with age in our healthy population but with differences by sex.

Palabras clave : Somatotypes; feeding behavior; kidney function tests; sodium; potassium; creatinine; urea.

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