Introducción: Evaluar el consumo de alimentos no saludables y prácticas de estilo de vida en mexicanos durante el confinamiento por SARS-CoV-2 (COVID-19).Material y métodos: Estudio transversal realizado durante parte del confinamiento en México. La recolección de datos fue realizada a través de una encuesta digital. Fueron evaluados aspectos de alimentación, bienestar y estilo de vida (consumo de alcohol y tabaco, actividad física y sueño), además de variables sociodemográficas. Para los análisis estadísticos fueron utilizadas la prueba χ2 para comparar diferencias entre género, con significancia estadística del 5%, utilizando el software SPSS 23.0.Resultados: Fueron analizadas 1084 encuestas. La edad promedio fue de 35,5±13,9 años y el 66,5% (n=721) fueron mujeres. En relación a la alimentación antes del confinamiento, 69,8% (n=757) consideraban su alimentación saludable, 6,5% (n=99) muy saludable y 23,7% (n=228) poco saludable, y el 2,3% (n=26) ha mejorado su alimentación, a pesar de esto el 17,1% (n=186) de las personas dice que en estos días come todo el tiempo. En relación al sueño, las mujeres duermen menos durante el periodo del confinamiento (p=0,002) y despiertan más durante la noche cuando se compara con los hombres (p<0,001).Conclusiones: Factores como la alimentación y el sueño presentaron alteraciones en ese período del confinamiento. Es importante destacar la relevancia de esos factores pues una buena alimentación y el descanso contribuyen para un mejor/fortalecimiento del sistema inmunológico.

Chronic kidney disease (CKD) represents a serious concern for the Mexican population since the main predisposing diseases (diabetes, hypertension, etc.) have a high prevalence in the country. The development of frequent comorbidities during CKD such as anemia, metabolic disorders, and hyperphosphatemia increases the costs, symptoms, and death risks of the patients. Hyperphosphatemia is likely the only CKD comorbidity in which pharmaceutical options are restricted to phosphate binders and where nutritional management seems to play an important role for the improvement of biochemical and clinical parameters. Nutritional interventions aiming to control serum phosphate levels need to be based on food tables, which should be specifically elaborated for the cultural context of each population. Until now, there are no available food charts compiling a high amount of Mexican foods and describing phosphorus content as well as the phosphate to protein ratio for nutritional management of hyperphosphatemia in CKD. In this work, we elaborate a highly complete food chart as a reference for Mexican clinicians and include charts of additives and drug phosphate contents to consider extra sources of inorganic phosphate intake. We aim to provide an easy guideline to contribute to the implementation of more nutritional interventions focusing on this population in the country.

Over the past decades, Mexico has become one of the main sweetener-consuming countries in the world. Large amounts of these sweeteners are in dairy products aimed at the children’s market in various presentations such as yogurt, flavored milk, flan, and cheeses. Although numerous studies have shown the impact of sweeteners in adults, the current evidence for children is insufficient and discordant to determine if these substances have any risk or benefit on their well-being. Therefore, this study aimed to describe the sweeteners present in 15 dairy products belonging to the school-age children’s market in Mexico and their impact on health. These dairy products were selected through a couple of surveys directed at parents of school-age children. After that, the list of ingredients of each product was analyzed to identify their sweetener content. From there, exhaustive bibliographic research on sweeteners and their possible health effects was carried out, which included 109 articles and 18 studies. The results showed that at a neurological, endocrinological, cardiovascular, metabolic, osseous, renal, hepatic, dental, reticular, carcinogenic, and gut microbiota level; sucrose, fructose, high-fructose corn syrup, maltodextrins, sucralose, and acesulfame K, have a negative effect. While maltodextrins, stevia, polydextrose, and modified starch have a positive one. For these reasons, it is necessary to evaluate the advantages and disadvantages that the consumption of each sweetener entails, as well as a determination of the appropriate acceptable daily intake (ADI).

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As an alternative for pest management, plants were developed to express lethal proteins against target insects, which may develop resistance due to their constant exposure to these proteins. To monitor changes in susceptibility to Cry1Ac protein and determine the effect exerted by the diet composition on the susceptibility of Heliothis virescens, bioassays were carried out in the U.D.C.A´s laboratory of Agricultural Biotechnology with populations collected on Desmodium sp., at Espinal, Tolima. The diets employed were ICRISAT, Greene and Shorey & Hale, incorporating serial concentrations of Cry1Ac, ranging from 0.01 to 100 ppm. Bioassays consisted of six treatments and six replicates; each experimental unit was represented by a plastic cup with diet, in which one or five neonate larvae were placed. With the mortality assessed at day seven the lethal concentration (LC 50 ) was calculated. The diet composition influenced the susceptibility response. The LC 50 obtained for Heliothis in 2011 (0.956 ppm) indicates that this insect lost susceptibility to Cry1Ac expressed by Bollgard®; however, this plant variety still has control over the species. Results also showed that the mortality obtained with five larvae per experimental unit was influenced by cannibalism and not by the consumption of Cry1Ac, indicating that only one larva per container should be used to eliminate the effect of cannibalism on mortality.