[Prevalence of risk eating behaviors and metabolic syndrome in teenage school students of Morelos state]. / Prevalencia de conductas alimentarias de riesgo y síndrome metabólico en escolares adolescentes del estado de Morelos.

INTRODUCTION: metabolic syndrome (MS) is a health problem associated with diabetes and cardiovascular diseases. The prevalence of MS in adolescents from Morelos is unknown. Certain risk eating behaviors (REB) may be associated with this phenotype. OBJECTIVE: to determine the prevalence of MS in adolescents and its association with REB. METHODS: cross-sectional study in junior high schools and high schools from Morelos. Anthropometric, clinical data, perception of body image and REB were investigated. MS was diagnosed with international criteria for adolescents and their association with REB was analyzed. Logistic regression analysis was utilized to estimate adjusted odds ratios (ORadj) and 95% confidence intervals (CI95). RESULTS: a total of 869 adolescents aged 14.6 ± 1.6 years were studied. They reported 2.6 ± 1.8 REB; the overall score was 5.9 ± 0.33. The 16.6% presented moderate or high REB risk. The prevalence of MS (6.7%) was associated with the REB score (OR 1.2 [1.1-1.3]), a value that remained after adjusting for age, sex, breakfast omission, residence region, perception of body image and background family of obesity, diabetes, hypertension or infarction (ODHI), ORadj 1.2 (1.1-1.3), pseudo R2 = 0.14, Chi-squared 16.7, p < 0.03. CONCLUSION: MS was more frequent in men, who were perceived to be thinner and with two or more family history of ODHI. It is suggested to influence the self-perception of overweight or obesity, to educate about compulsive behaviors, undergo diets, fasting and exercise to prevent MS.

Introducción: el síndrome metabólico (SM) es un problema de salud asociado a diabetes y enfermedades cardiovasculares. Se desconoce la prevalencia de SM en adolescentes del estado de Morelos. Ciertas conductas alimentarias de riesgo (CAR) podrían estar asociadas a ese fenotipo.Objetivo: determinar la prevalencia de SM en adolescentes y su asociación con las CAR.Métodos: estudio transversal en escuelas secundarias y preparatorias de Morelos. Se investigaron datos antropométricos, clínicos, percepción de la imagen corporal y de las CAR. El SM se diagnosticó con criterios internacionales para adolescentes y se analizó su asociación con las CAR. Mediante análisis de regresión logística se estimaron razones de momios (RM) e intervalos de confianza al 95% (IC95).Resultados: fueron estudiados 869 adolescentes de 14,6 ± 1,6 años. Reportaron 2,6 ± 1,8 CAR; el puntaje global fue 5,9 ± 0,33. El 16,6% presentaba riesgo CAR moderado o alto. La prevalencia de SM (6,7%) estuvo asociada al puntaje de CAR, RM 1,2 (1,1-1,3), valor que permaneció después de ajustar por edad, sexo, omisión del desayuno, región de residencia, percepción de la imagen corporal y de antecedentes familiares de obesidad, diabetes, hipertensión o infarto (ODHI), RMaj 1,2 (1,1-1,3), pseudo R2 = 0,14, Chi cuadrado 16,7, p < 0,03.Conclusión: el SM fue más frecuente en hombres, que se percibían más delgados y con dos o más antecedentes familiares ODHI. Se sugiere incidir sobre la autopercepción del sobrepeso u obesidad y educar sobre conductas compulsivas, seguimiento de dietas, ayunos y ejercicio para prevenir el SM.

Bioavailability of a heme-iron concentrate product added to chocolate biscuit filling in adolescent girls living in a rural area of Mexico.

A heme-iron concentrate product derived from swine hemoglobin was used to enrich the chocolate-flavored filling of biscuits and the bioavailability of this source of heme-iron was assessed in adolescent girls. The placebo control (PC) group consisted of 35 teenagers with the highest baseline hemoglobin concentrations. The supplemented groups were randomized to receive biscuits fortified with iron sulfate (IS, n = 37) or heme-iron concentrate (HIC, n = 40). Both groups were supplemented with 10.3 mg Fe/d for 7 wk. Blood chemistry and hematology analyses were performed at baseline and at the end of the study. The baseline prevalence of anemia (hemoglobin <12 g/dl) in the entire group was 3.9% and by the end of the study it had fallen to 2.3%. The hemoglobin levels in both supplemented groups increased (P < 0.05) during the study period from 13.6 and 13.5 g/dl for HIC and IS, respectively, at baseline to 14 g/dl at the end of the study. Serum ferritin concentrations decreased by the end of the study in both the PC and IS groups (P < 0.05), but not in the heme group. In conclusion, iron bioavailability from HIC-fortified biscuits was calculated to be 23.7% higher than that observed for IS, as shown by the differences observed in serum ferritin levels during the study. The iron contained in the heme-iron concentrate was well absorbed and tolerated by the adolescents included in the study.