The effect of vitamin D supplementation on body composition in nursing mothers with overweight or obesity: a randomized double-blind placebo-controlled clinical trial

[Understanding food insecurity in rural families: A case study in Pueblo Nuevo, Cordoba, Colombia]

The aim was to determine the possible association between food insecurity and the sociodemographic conditions of families in the rural area of Pueblo Nuevo, Córdoba, Colombia. It was a cross-sectional study using surveys to collect sociodemographic and food insecurity data in a rural area of Pueblo Nuevo, Córdoba, Colombia in which 391 families were surveyed to obtain relevant information. The Latin American and Caribbean Food Security Scale (ELCSA) survey was applied to evaluate the food security of the families. A descriptive analysis of qualitative and quantitative variables, and polyserial correlations to establish relationships between food insecurity and sociodemographic variables was held. Only 5 families (1%) showed adequate food security (AFS), while 235 families were in the severe food insecurity (SFI) category. Positive correlations were observed between types of food security and educational level (P<0.023), family income (P<0.001), and household size (P=0.002). A high prevalence of food insecurity was evident in the studied families, influenced by household size, lack of income, and low educational levels.

Association of maternal 25(OH)D levels during pregnancy with fetal birth weight and preschooler growth status: A retrospective birth cohort study

AIM

There is limited and conflicting evidence available regarding the correlation between maternal vitamin D status and childhood overweight and body mass index (BMI). The aim of this study was to investigate the following: (1) potential association between maternal 25-hydroxyvitamin D (25(OH)D) levels and newborn growth status; (2) relationship between maternal 25OHD levels and BMI and the risk of overweight with preschoolers being overweight.

METHODS

A cohort of 3213 eligible singleton mother-infant pairs were used to investigate the possible associations between maternal 25(OH)D levels and fetal growth status. Data of 1767 available singleton mother-infant pairs and 6-year-old preschoolers was applied to analyze the potential correlations between maternal 25(OH)D status and risk of childhood overweight.

RESULTS

Compared with sufficient 25(OH)D in pregnancy group (≥75 nmol/L), there were no correlations between the maternal 25(OH)D deficiency (<50 nmol/L) and large gestational age (LGA) (p = 0.465), small gestational age (SGA) (p = 0.607), lower birth weight (LBW) (p = 0.725) or fetal macrosomia (p = 0.535). Moreover, no significant associations between insufficient maternal 25(OH)D (50-75 nmol/L) and LGA (p = 0.505), SGA (p = 0.816), LBW (p = 0.816), or fetal macrosomia (p = 0.413) were observed. We found statistically significant disparities between the fetal birth weight and height (p < 0.001), weight (p < 0.001), head circumference (p = 0.001) of 6-years preschooler. No significant associations were found between the maternal 25(OH)D levels and BMI and risk of overweight at 6-year-old preschoolers.

CONCLUSION

There were no apparent correlation found between maternal 25(OH)D concentrations and fetal birth status. There was no evidence found to suggest the effect of maternal 25(OH)D level on overweight at 6-year-old preschoolers.

Trends and determinants of child stunting in Ethiopia: a longitudinal analysis of sociodemographic factors and regional disparities

Stunting remains a critical issue affecting child health in Ethiopia, with significant implications for growth and development. Despite efforts to address stunting, understanding its determinants and trends over time is essential for developing effective interventions. The objective of this study is to examine the trends and determinants of child stunting in Ethiopia, focusing on sociodemographic factors and regional disparities. This longitudinal observational study utilized data from the Young Lives project covering the period from 2002 to 2016. An ordinal logistic regression model with generalized estimating equation (GEE) was used to analyse 7,680 observations from 1,536 children across Ethiopia. Variables included sociodemographic factors, access to resources, and parental education levels. Over the study period, there were notable improvements in child stunting rates, influenced by variables such as household wealth, maternal education, access to safe drinking water, and urban versus rural residence. Children in households with higher wealth and maternal education levels experienced lower rates of stunting. Regional disparities were evident, with a greater prevalence in Amhara and lower rates in Addis Ababa.The findings underscore the importance of targeted interventions to address socioeconomic disparities and improve resource access. Enhancing maternal education, ensuring access to safe water, and addressing regional disparities are critical to reducing child stunting rates in Ethiopia.

High dose dietary vitamin D allocates surplus calories to muscle and growth instead of fat via modulation of myostatin and leptin signaling

Obesity occurs because the body stores surplus calories as fat rather than as muscle. Fat secretes a hormone, leptin, that modulates energy balance at the brain. Changes in fat mass are mirrored by changes in serum leptin. Elevated leptin prompts the brain to decrease appetite and increase energy expenditure. In obesity, however, impaired leptin sensitivity mutes these leptin-mediated changes. We have limited understanding of what controls leptin production by fat or leptin sensitivity in the brain. Muscle produces a hormone, myostatin, that plays a role in muscle analogous to the one that leptin plays in fat. Absent myostatin leads to increased muscle mass and strength. As with leptin, we also do not know what controls myostatin production or sensitivity. Although fat mass and muscle mass are closely linked, the interplay between leptin and myostatin remains obscure. Here we describe an interplay linked thru vitamin D. Conventionally, it is thought that vitamin D improves strength via trophic effects at the muscle. However, we find here that high dose dietary vitamin D allocates excess calories to muscle and linear growth instead of storage as fat. Vitamin D mediates this allocation by decreasing myostatin production and increasing leptin production and sensitivity. That is, high dose vitamin D improves integration of organismal energy balance. Obesity, aging and other chronic inflammatory diseases are associated with increased fat mass and decreased muscle mass and function (e.g. sarcopenia). Our work provides a physiologic framework for how high-dose vitamin D would increase allocation of calories to muscle instead of fat in these pathologies. Additionally, our work reveals a novel link between the myostatin and leptin signaling whereby myostatin conveys energy needs to modulate leptin effects on calorie allocation. This result provides evidence to update the conventional model of energy stores sensing to a new model of energy balance sensing. In our proposed model, integration of leptin and myostatin signaling allows control of body composition independent of weight. Furthermore, our work reveals how physiologic seasonal variation in vitamin D may be important in controlling season-specific metabolism and calorie allocation to fat in winter and muscle and growth in summer.

Household food insecurity and associated factors among postpartum women in southern Ethiopia: a community based cross sectional study

Approximately two billion individuals, or 26.4% of the global population, live in moderate- to severely food-insecure circumstances. It was discovered that not receiving all recommended antenatal care throughout one's pregnancy is one of the effects of household insecurity. The majority of women in Ethiopia, one of the most food-insecure countries in the world, with 10% of the population facing food poverty, devote more of their time to household duties, making food insecurity in the home the primary effect of poor prenatal care utilization. The main objective this study was to assess the status of household food insecurity among postpartum women at Arba Minch town, southern Ethiopia. A community-based cross-sectional study was conducted among 381 mothers who were enrolled from December 1, 2022, to January 30, 2023. The total sample size was allocated proportionately to the number of postpartum women living in each kebeles taking from the town registry of health extension workers for immunization. Thus, systematic sampling was applied. Kobo Toolbox was used for data collection and cleaning, which was then analyzed using the statistical package of Social Science Version 26 (SPSS). In this study, the prevalence of food insecurity was 30.2% (95% CI 25.5-34.5). The associated factors with household food-insecurity were maternal occupation (AOR = 0.5, 95% CI 0.27, 0.90), late antenatal care initiation (AOR = 3.5, 95% CI 2.13, 5.91), and low monthly income (AOR = 3.1, 95% CI 1.38, 6.93). Food insecurity among postpartum mothers in the study area is high. Families who are severely food insecure require quick assistance to lower poor maternal and neonate's outcomes. Furthermore, enhancing the occupation of mothers is crucial in reducing the morbidities and mortality of food insecure mothers, such as delayed prenatal care services, anemia, low birth weight, and stillbirth.

Safe Drinking Water, Sanitation and Mother's Hygiene Practice as Stunting Risk Factors: A Case Control Study in a Rural Area of Ciawi Sub-district, Tasikmalaya District, West Java, Indonesia

Background

Stunting is associated with disorders of the small intestines caused by environmental factors and poor hygiene practices. Prevention of stunting should be conducted in the first 1,000 days of life; namely, from conception until the child is two years old. This research aimed to analyze the relationship between environmental risk factors and maternal personal hygiene with the incidence of stunting in children aged 6-23 months.

Methods

This study was conducted using a case-control design, with a total sample of 212 (106 cases and 106 controls) enrolled purposively. Data were collected through interviews using a questionnaire. The analysis used chisquare tests and multiple logistic regression.

Results

The results of multivariate analysis showed the independent variables that have a significant association on the incidence of stunting are access to safe drinking water and maternal hygiene practices. The external variables that have a significant relationship is birth length and feeding practice.

Conclusion

Having no access to safe drinking water, not proper sanitation, and poor maternal hygiene practices have a higher risk of stunting in children aged 6-23 months. The implications of this research include the need for increased access to a safe environment and improvement of mother's behavior as essential efforts to prevent stunting.