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This study aimed to compare the general and health care characteristics of young children of migrant and non-migrant mothers from indigenous Tarahumara communities in Chihuahua, Mexico, and to evaluate the association between child risk for neurodevelopment delay with parental practices of early childhood stimulation. Male and female children aged 12 to 48 months were studied in two groups: 1) children of migrant mothers residing in urban settlements and 2) children of non-migrant mothers residing in their native rural localities. Prevalence of the risk of moderate to severe neurodevelopment delay (MSND) was greater in children of migrant mothers as compared to non-migrant mothers (75.6%, CI95% [69.5, 80.8] vs. 59.8%, [51.4, 67.7], p = .003). The proportion of children who received adequate and favorable early stimulation (FTES) at home was greater in children of non-migrant mothers (p < .001). The migration of indigenous mothers to urban settlements was associated with child MSND (p = .03), as well as to insufficient early stimulation practices (p = .03). Consistent attendance at early childhood stimulation sessions through the Initial Education program was greater in children of non-migrant mothers (p = .01), and non-attendance predicted child MSND (p = .02). El objetivo de este estudio fue comparar características generales y de atención en salud entre menores y sus madres migrantes y no migrantes en indígenas Tarahumaras, en Chihuahua, México. Así mismo, se evaluó la asociación entre el riesgo de retraso en neurodesarrollo en niños y las prácticas de estimulación oportuna. Niños y niñas de entre 12 a 48 meses de edad fueron estudiados en dos grupos: 1) menores de madres migrantes ubicados en asentamientos urbanos en la ciudad de Chihuahua y 2) menores de madres no migrantes residentes en sus localidades de origen. La prevalencia de riesgo de retraso del neurodesarrollo moderado y grave (RNMG) fue mayor en menores de madres migrantes versus no migrantes (75.6%, IC95% [69.5, 80.8] vs 59.8%, [51.4, 67.7], p = .003). La proporción de niños(as) que recibieron una estimulación oportuna favorable (EOF) en casa fue mayor en los menores de madres no migrantes (p < .001). La migración de las madres indígenas hacia asentamientos urbanos estuvo asociada al RNMG en sus hijos(as) (p = .03), así como las prácticas insuficientes de estimulación oportuna (p = .03). La asistencia consistente a sesiones de estimulación temprana del programa de Educación Inicial fue mayor en niños(as) de madres no migrantes (p = .01); y la no asistencia fue predictor del RNMG (p = .02).

to evaluate longitudinal change in anemia and its association with indigenous status, socioeconomic status (SES), and food insecurity (FI) in Mexican children.a longitudinal study in 1164 children under 18 months of age in rural communities. Hemoglobin concentration was measured in 2008 and 2012, and changes in anemia status were determined. Indigenous status, SES and FI were obtained in 2008, and their associations with four categories of change in anemia status were assessed through multinomial logistic regression models including adjustment covariates.in 2008, 40.5 % of children had anemia, and 85.2 % of these did not have anemia in 2012, whereas 9.9 % of those who did not have anemia in 2008 had developed it in 2012. The distributions of the categories of change in anemia status were not associated with FI, while statistically significant differences were detected according to indigenism and NSE.the high prevalence of anemia that affects the child population justifies the implementation of interventions based on evidence, of proven effectiveness to combat it.

Resumen: Objetivos: Determinar prevalencias de mala nutrición [sobrepeso u obesidad (Sp+O) y talla baja (TB)] en población mexicana de 6 a 12 años de edad de nivel básico de primaria, y su asociación con características geográficas (ámbito, marginación y región del país), y de la escuela (tipo, turno y grado). Métodos: Con información de 10 528 676 escolares, se estimaron prevalencias (e I.C. 95%), a nivel nacional y por características de interés, y su asociación mediante modelos de regresión logística. Resultados: La prevalencia nacional de Sp+O fue 34.4%, 36.5% en ámbito urbano y 40.2% en escuelas privadas. La prevalencia nacional de TB fue 8.7%; en área rural, 13.7% y 28.8% en escuelas tipo indígenas. El Sp+O y la TB se asociaron significativamente con características geográficas y de escuelas. Conclusiones: Existe una polarización nutricional en el contexto escolar del país. Es importante continuar con sistemas de monitoreo y vigilancia nutricional.

Objetivo. Estimar las prevalencias municipales de mala nutrición en población preescolar en México, y describir su variabilidad y su relación con la cobertura del Programa Nacional México Sin Hambre. Material y métodos. A partir de datos de la Encuesta Nacional de Salud y Nutrición de 2012, la desigualdad del ingreso y marginación municipal se aplicó un modelo normal generalizado para obtener las distribuciones municipales de los indicadores de nutrición y estimar las prevalencias de mala nutrición. Resultados. Las prevalencias de talla baja variaron de 7.8% (IC95%: 5.9-8.9) a 64.2% (49.2-72.5), las de bajo peso de 0.6% (0.005-1.7) a 22.2% (13.5-34.9) y de sobrepeso u obesidad de 2.6% (0.2- 3.9) a 14.4% (11.9-27.7). De los 554 municipios con prevalencias de talla baja mayor que 25%, 275 fueron cubiertos por el programa México Sin Hambre. Conclusiones. La estimación de prevalencias municipales de mala nutrición evidenció grandes diferencias al interior del país, mismas que podrían asistir la política pública.

Objectives: to analyze the changes of Ow+Ob in a cohort with four years of evolution of students from Mexico elementary schools and to evaluate its association with socio-demographic factors. Methods: information comes from a nutritional surveillance system of 52,545 elementary schools, with weight and height measurements from 2,008,474 children from six to eleven years old. A follow-on panel longitudinal analysis was performed from 2015 to 2019 in a dynamic cohort with three measurements. Ow+Ob prevalences were obtained; through a logistic regression with random effects, odds ratios (OR) were calculated, adjusting by sociodemographic characteristics (p0.05). Results: between 2015 and 2019, positive OR were observed for Ow+Ob development in 2017-2018 (OR = 1.02) and 2018-2019 (OR = 1.06). Students from the northern and southern regions of the country showed a greater probability of suffering Ow+Ob (OR = 1.58 and 1.64) when compared with the center. Attending to community or indigenous schools was a protective factor (OR = 0.54) whereas attending to a private school increased the risk (OR = 1.75). Adjusted Ow+Ob prevalences showed an accelerated increasing trend in males through all the periods. Conclusions: in Mexico, obesity in school children is a growing problem related to sociodemographic factors, therefore, urgent actions are needed for its restraining.Introducción: México se sitúa dentro de los primeros lugares a nivel mundial en cuanto a sobrepeso y obesidad en escolares, con una prevalencia del 38,2 %. Objetivo: analizar los cambios de sobrepeso y obesidad (Sob+Ob) durante cuatro años en una cohorte de alumnos de escuelas primarias en México y evaluar su asociación con factores sociodemográficos. Métodos: la información proviene de un sistema de vigilancia nutricional en escolares. Se realizó un análisis longitudinal de panel con seguimiento a través de una corte dinámica de tres mediciones realizadas entre 2015 y 2019. Se obtuvieron las prevalencias de Sob+Ob a través de una regresión logística con efectos aleatorios y se calcularon razones de momios (OR), ajustando por características sociodemográficas. Resultados: entre 2015 y 2019 se observaron OR positivos para el desarrollo de Sob+Ob, 2017-2018 (OR = 1,02) y 2018-2019 (OR = 1,06). Los estudiantes de las regiones norte y sur del país mostraron una mayor probabilidad de sufrir Sob+Ob (OR = 1,58 y 1,64) en comparación con el centro. La asistencia a escuelas comunitarias o indígenas fue un factor protector (OR = 0,54), mientras que la asistencia a una escuela privada aumentó el riesgo (OR = 1,75). Las prevalencias ajustadas de Sob+Ob demostraron una tendencia creciente acelerada en los hombres a lo largo de todos los periodos. Conclusiones: en México, la obesidad en escolares es un problema creciente relacionado con factores sociodemográficos, por lo que se requieren acciones urgentes para su contención.

A nivel mundial 162 millones de niños no alcanzaron un desarrollo pleno de sus capacidades (Organización de las Naciones Unidas [ONU], 2014). El objetivo de nuestro estudio fue estimar la prevalencia de retraso en el neurodesarrollo y de estimulación oportuna de niños residentes de comunidades marginadas de diversas entidades rurales de México, y cuantificar su asociación con el estado de nutrición y otras variables sociodemográficas. Realizamos un estudio observacional, transversal, descriptivo y de asociación. La muestra fue de 37,495 niños de entre 11 y 13 meses de edad, provenientes de 1,830 localidades rurales de 750 municipios de las 32 entidades de la República Mexicana. El retraso leve del neurodesarrollo ocurrió en el 32.1%, el retraso moderado en el 21.9% y el grave en el 17.2%. El retraso grave se presentó en mayor medida en el estado de Guerrero, Chiapas y Puebla. La condición de estimulación Favorable se presentó en el 52.5%. La asociación entre la estimulación oportuna, el estado de nutrición y el neurodesarrollo es evidente y estadísticamente significativa (p

To estimate malnutrition prevalence of preschool children at the level of municipality in Mexico, describe prevalence heterogeneity and its relationship with the Programa Nacional México Sin Hambre´s coverage.Using the 2012 Mexican National Survey of Health and Nutrition, municipal income inequality and marginality, we applied a generalized normal model to obtain municipal distributions of nutrition status indicators from which we estimated malnutrition prevalence.Stunting prevalence ranged from 7.8% (95%CI: 5.9-8.9) to 64.2% (49.2-72.5), low weight prevalence ranged from 0.6% (0.005- 1.7) to 22.2% (13.5-34.9) and overweight-obesity prevalencem ranged from 2.6% (0.2-3.9) to 14.4% (11.9-27.7). A total of 275 out of 554 municipalities with stunting prevalence above 25% were covered by the Programa Nacional México Sin Hambre.Municipal malnutrition prevalence estimation showed wide differences within Mexico; this knowledge could assist public policy.Estimar las prevalencias municipales de mala nutrición en población preescolar en México, y describir su variabilidad y su relación con la cobertura del Programa Nacional México Sin Hambre.A partir de datos de la Encuesta Nacional de Salud y Nutrición de 2012, la desigualdad del ingreso y marginación municipal se aplicó un modelo normal generalizado para obtener las distribuciones municipales de los indicadores de nutrición y estimar las prevalencias de mala nutrición.Las prevalencias de talla baja variaron de 7.8% (IC95%: 5.9-8.9) a 64.2% (49.2-72.5), las de bajo peso de 0.6% (0.005-1.7) a 22.2% (13.5-34.9) y de sobrepeso u obesidad de 2.6% (0.2- 3.9) a 14.4% (11.9-27.7). De los 554 municipios con prevalencias de talla baja mayor que 25%, 275 fueron cubiertos por el programa México Sin Hambre.La estimación de prevalencias municipales de mala nutrición evidenció grandes diferencias al interior del país, mismas que podrían asistir la política pública.

To assess the association between household food insecurity (FI) and the presence of anaemia among Mexican children who were between 12 and 59 months old, and to determine whether this association differs by geographical regions. We analysed 7468 children of ages between 12 and 59 months, based on data from the 2012 National Health and Nutrition Survey (ENSANUT 2012). Haemoglobin was measured in capillary blood. Household FI levels were defined according to the Latin American and Caribbean Food Security Scale. An ordinal logistic regression model was developed to assess the relationship between FI and anaemia. The interaction between geographical regions and FI was determined. The highest proportion of anaemia occurred in children with severe household FI (24.3%), compared to those from households with food security (21.2%). Children from severe FI households have a higher adjusted prevalence of anaemia than those from households with food security. FI and anaemia were associated mainly among children residing in the southern region of Mexico. Our findings can contribute to a better understanding of FI and anaemia in children and to strengthen interventions to address these problems.

OBJECTIVES: To document the behavior of overweight and obesity among school-age population, that attends to public elementary schools through four consecutive school years. METHODS: An epidemiological, descriptive study, that consisted on four transversal yearly and consecutive stages from August 2015 to December 2018. Applied a Generalized Ordinal Logistic Regression model and the relative risk (RR) calculation. Country region, rural or urban locality and marginalization index (MI) of the school were used as socio demographic variables. Overweight and obesity prevalences where adjusted through the marginal probabilities estimators. The databases used were the public versions of the results of the National Weight and Height Registry (Registro Nacional de Peso y Talla in Spanish) from the Mexico National Nutrition Institute. RESULTS: A total of 59,724 schools were evaluated from which 17’491,685 anthropometries were obtained for the four school years. Regarding RR evaluation, from the regression model we were able to identify statistically significant differences (P

Objetivo. Evaluar el consumo del Desayuno Escolar Frío (DEF) y su asociación con la ganancia de peso en población preescolar y escolar beneficiaria en San Luis Potosí, México. Material y métodos. Se realizó un estudio longitudinal en 255 niñas y niños de 3 a 8 años. Se midió la ganancia de peso durante un año, y la ingesta energética total se estimó por medio de un cuestionario de frecuencia de consumo. La energía proveniente del DEF se dividió en terciles y su asociación con la ganancia de peso fue estimada a través de regresión lineal múltiple. Resultados. En los escolares, la interacción entre los terciles de energía del DEF y sexo mostró que las niñas del segundo y tercer tercil ganaban 500g (p=0.063) y 800g (p=0.015) más, respectivamente. Conclusión. Un mayor consumo de energía proveniente del desayuno escolar se asocia con un incremento en la ganancia de peso en niñas de edad escolar.

Metabolic syndrome (MetS) is a disorder that includes a cluster of several risk factors for the development of type 2 diabetes and cardiovascular disease. The R230C variant of the ABCA1 gene has been associated with low HDL-cholesterol in several studies, but its association with MetS in children remains to be determined. The aim of this study was to analyze the association of the R230C variant with MetS and other metabolic traits in school-aged Mexican children.The study was performed in seven urban primary schools in the State of Mexico. Four hundred thirty-two Mexican school-age children 6-13 years old were recruited. MetS was identified using the International Diabetes Federation definition. The R230C variant of the ABCA1 gene was genotyped to seek associations with MetS and other metabolic traits.The prevalence of MetS was 29% in children aged 10-13 years. The R230C variant was not associated with MetS (OR = 1.65; p = 0.139). Furthermore, in the whole population, the R230C variant was associated with low HDL-cholesterol levels (β coefficient = -3.28, p0.001). Interestingly, in the total population we found a novel association of this variant with high triglyceride levels (β coefficient = 14.34; p = 0.027).We found a new association of the R230C variant of the ABCA1 gene with high triglyceride levels. Our findings also replicate the association of this variant with low HDL-cholesterol levels in Mexican school-age children.

Different biotic and abiotic factors determine the fatty acid (FA) composition of fish tissues and organs. This information is useful for humans due to the fact that fish consumption is associated with health benefits. The aim of the present study was to identify the variation in the concentration of fatty acids, according to different factors, among ten edible marine fish species in Mexico, collected from June to December 2009 in the largest fish market in Mexico City: Euthynnus alletteratus, Sciaenops ocellatus, Bairdiella chrysoura, Sphyraena guachancho, Symphurus elongatus, Istiophorus platypterus, Ophichthus rex, Eugerres plumieri, Eucinostomus entomelas and Oreochromrnis mossambicus. Lipid content was gravimetrically quantified, the fatty acids were determined using a gas chromatograph and the results were statistically analyzed. Total lipid content ranged from 0.93 to 1.95 g/100 g in E. entomelas and O. urolepis hornorum, respectively. E. alletteratus, B. chrysoura, S. elongatus, I. platypterus, O. rex and E. plumieri presented the following order in FA concentration: Polyunsaturated FA (PUFA)Saturated FA (SFA)Monounsaturated FA (MUFA). S. ocellatus, S. guachancho and E. entomelas presented SFAPUFAMUFA; and only O. mossambicus presented SFAMUFAPUFA. O. mossambicus had the highest concentration (mg/100 g) of SFA (559.40) and MUFA (442.60), while B. chrysoura presented the highest content (mg/100 g) of PUFA (663.03), n-3 PUFA (514.03), EPA+DHA (506.10) and n-6 PUFA (145.80). Biotic and abiotic factors of the analyzed fish significantly influenced their FA concentration. Subtropical species presented 42.1% more EPA+DHA than tropical specie. Values presented here will vary according to the changes in the ecosystem and characteristics of each fish species, however the information generated in the present study is useful for improving fish consumption recommendations.

Los factores bióticos y abióticos determinan la composición de ácidos grasos AG en los peces, información relevante por la asociación existente entre su consumo y los beneficios para la salud humana. El objetivo de esta investigación fue identificar la variación en la concentración de AG, según diferentes factores, en diez especies marinas de pescado comestible en México: Euthynnus alletteratus, Sciaenops ocellatus, Bairdiella chrysoura, Sphyraena guachancho, Symphurus elongatus, Istiophorus platypterus, Ophichthus rex, Eugerres plumieri, Eucinostomus entomelas y Oreochromis mossambicus. La determinación de AG se llevó a cabo mediante cromatografía de gases. El contenido de lípidos totales varió entre 0.93 y 1.95g/100g en E. entomelas y O. mossambicus, respectivamente. E. alletteratus, B. chrysoura, S elongatus, I. platypterus, O. rex y E. plumieri presentaron el siguiente orden en la concentración de AG: AG poliinsaturados AGPAG saturados AGSAG monoinsaturados AGM. S. ocellatus, S. guachancho y E. entomelas: AGSAGPAGM; mientras que tan solo O. mossambicus presentó AGSAGMAGP. Este tuvo la mayor concentración de AGS 559.40mg/100g y AGM 422.60mg/100g, mientras que B. chrysoura presentó el mayor contenido mg/100g de AGP 663.03, AGn-3 514.03, EPA+DHA 506.10 y AGn-6 145.80. Factores bióticos y abióticos influyeron significativamente en la concentración de AG. Las especies subtropicales presentaron una concentración 42.1 mayor de EPA+DHA que las tropicales. Los valores presentados pueden cambiar según modificaciones en el ecosistema y en las características de cada especie, sin embargo, el conocimiento aquí generado es útil para mejorar las recomendaciones sobre el consumo de pescado. Different biotic and abiotic factors determine the fatty acid FA composition of fish tissues and organs. This information is useful for humans due to the fact that fish consumption is associated with health benefits. The aim of the present study was to identify the variation in the concentration of fatty acids, according to different factors, among ten edible marine fish species in Mexico, collected from June to December 2009 in the largest fish market in Mexico city: Euthynnus alletteratus, Sciaenops ocellatus, Bairdiella chrysoura, Sphyraena guachancho, Symphurus elongatus, Istiophorus platypterus, Ophichthus rex, Eugerres plumieri, Eucinostomus entomelas and Oreochromis mossambicus. Lipid content was gravimetrically quantified, the fatty acids were determined using a gas chromatograph and the results were statistically analyzed. Total lipid content ranged from 0.93 to 1.95g/100g in E. entomelas and O. urolepis hornorum, respectively. presented the following order in FA concentration: Polyunsaturated FA PUFASaturated FA SFAMonounsaturated FA MUFA. E. alletteratus, B. chrysoura, S. elongatus, I. platypterus, O. rex and E. plumieriS. ocellatus, S. guachancho and E. entomelas presented SFAPUFAMUFA; and only O. mossambicus presented SFAMUFAPUFA. O. mossambicus had the highest concentration mg/100g of SFA 559.40 and MUFA 442.60, while B. chrysoura presented the highest content mg/100g of PUFA 663.03, n-3 PUFA 514.03, EPA+DHA 506.10 and n-6 PUFA 145.80. Biotic and abiotic factors of the analyzed fish significantly influenced their FA concentration. Subtropical species presented 42.1 more EPA+DHA than tropical specie. Values presented here will vary according to the changes in the ecosystem and characteristics of each fish species, however the information generated in the present study is useful for improving fish consumption recommendations.

Objetivo. Conocer la situación nutricional de la población infantil del medio rural mexicano, comparándola con la situación previa y localizando las zonas más afectadas. Material y métodos. La muestra estuvo conformada por 38 232 familias, pertenecientes a 855 localidades, seleccionadas probabilísticamente. Se tomaron medidas antropométricas a 31 601 menores de cinco años. El análisis se realizó en consideración a la población de referencia peso/edad, peso/talla y talla/edad. Resultados. La desnutrición global afecta a 42.7% de los niños de acuerdo con el indicador peso/edad (IC= 1.9%); hace 22 años las formas de desnutrición moderada y severa eran de 17.4% y actualmente son de 19.3%. Respecto a talla/edad afecta a 55.9% (IC= 1.9%), y a peso/talla a 18.9%. Conclusiones. La ENAL96 muestra que la desnutrición sigue siendo un problema muy grave, que no se ha solucionado y que sigue afectando a las regiones del sur en donde hay mayor prevalencia de grupos indígenas.Objective. To evaluate the nutritional status of the infantile population in rural Mexico, compare it with previous data and situate the most affected areas. Material and Methods. The sample consisted of 38 232 families, from 855 randomly selected communities. Anthropometry was obtained from 31 601 children under five years of age and analysis was performed considering the reference values of weight/age, weight/height and height/age. Results. Overall malnutrition affects 42.7 of children according to weight/age indicator (CI= 1.9%). Moderate and severe malnutrition 22 years ago was 17.4% and now these affect 19.3%. Further data show that 55.9% are malnourished according to height/age, and 18.9% according to weight/height. Conclusions. The ENAL 96 shows that malnutrition is still a severe national problem which has not improved in the last 22 years. The areas of highest prevalence are the southern states which have mostly Indian population.

The objective of this study was to identify the association between knowledge about nutrition with the presence of obesity or overweight in women with low income in Mexico City. Data was obtained with the Urban Food and Nutrition Survey 2002 in the Metropolitan Area of Mexico City (ENURBAL 2002), a stratified multistage and clustered design survey. An ordinal logistic regression model was used in order to estimate the probability to present obesity and overweight or obesity, in relation to nutritional knowledge, age, education, employment, socioeconomic status, and total fat consumption. The variables that were related to overweight or obesity: correct or regular nutrition knowledge (OR = 2,00; CI95% = 1,13-3,54) and (OR = 1,54; CI 95%= 1,03-2,30), respectively; age 30 years (OR = 3,00; CI 95% = 1,94-4,64), belonging to a medium- low socioeconomic status (OR = 2,04; CI 95% = 1,33-3,15), and high fat consumption (OR = 1,65; CI 95% = 1,07-2,55). For obesity was age 30 years (OR = 2,42; IC 95% = 1,48-3,94) and high fat consumption (OR = 1,67; IC 95% = 1,05-2,66). Our results helped to identify associated factors in women with obesity and overweight from low income households, mainly those concerning with nutrition knowledge. This emphasizes the importance of improving knowledge about nutrition, in planning the strategy for interventions aimed to prevent overweight and obesity.

To evaluate the feeding and nutrition conditions and its relation with diabetes mellitus (DM-2) in adult population (30 years) a sample belonging to the low socioeconomic stratum of the Mexico City metropolitan area was studied. They were participants in the Second Feeding and Nutrition Survey in the Mexico City metropolitan area. (ENURBAL-2002).Information collected by the ENURBAL 2002 was used in order to evaluate the relationship between some risk factors and diabetes mellitus in adult population of low economical level. Logistical regression analysis was applied.A complete set of 1279 individuals with ages over 30 years was studied. The 9.9% (IC 95% 7.9, 12.4) had been previously diagnosed as diabetics and 3.9% (IC 95% 2.9, 5.4) were not been diagnosed but their glycemia reached diabetic levels. Total diabetes prevalence observed in this study was 13.8% (IC 95% 11.7, 16.3). People with good score on its knowledge about nutrition, as well as high total fat intake, are significant and positively associated with DM-2 (RM = 2.41, IC 95% 1.09, 5.35 and RM = 2.14 IC 95% 1.24, 3.69, respectively).Diabetes mellitus was highly prevalent among adult (30 years population) mainly on the lower socioeconomic stratum of Mexico City. This result is important to promote changes in life style that allow to prevent its appearance by modifying the obesigenic environment and changes in the feeding patterns.