World Health Organization Growth Reference Research Articles

Sibship Composition and BMI Z-Score Among Saudi Preschoolers: A Cross-Sectional Study.

Background and objective The association between sibship composition and child body mass index (BMI) has not been investigated in any Arab/Middle Eastern populations. In light of this, this study aimed to examine the association of the number of siblings, number of older siblings, and number of younger siblings with child BMI z-score (BMIz) among preschoolers in the Kingdom of Saudi Arabia (KSA). Methods A total of 209 mothers and their children were recruited from preschools in Jeddah, KSA. Mothers reported their responses to the study questionnaire via telephone. Child anthropometry was objectively measured; BMIz was calculated based on age- and sex-specific World Health Organization (WHO) growth standards and reference data. We used hierarchical multiple linear regression to examine the association between sibship composition variables and child BMIz, independent of the effect of potential confounders, and to evaluate changes in model fit. Results The number of siblings was negatively associated with child BMIz [b = -0.18, 95% confidence interval (CI) = -0.35, -0.06, p<0.01, adjusted R2= 0.16]. There was a negative association between the number of older siblings and child BMIz (b = -0.23, 95% CI = -0.38, -0.11, p<0.01, adjusted R2= 0.21) as well as between the number of older sisters and child BMIz (b = -0.18, 95% CI = -0.52, -0.09, p<0.01, adjusted R2= 0.19). However, there were no significant associations between the number of older brothers or the number of younger siblings and child BMIz. Conclusions Based on our findings, sibship composition was found to be associated with BMIz among a sample of preschoolers in KSA. More research is needed to further establish this association and to understand the underlying mechanism of the association of the greater number of older siblings and older sisters with lower BMIz.

Growth in height and its association with overweight and obesity in Mexican children: an evaluation based on a nationally representative sample (ENSANUT 2018).

Chronological age and height records (7,097 boys and 6,167 girls) were obtained from the Mexican National Survey of Health and Nutrition database. Height growth curves were fitted using the Preece-Baines 1 (PB1) model and the LMS method. Age at peak height velocity (APHV) was 12.4 and 12.7 years for overweight-obese and normal-weight boys, respectively, and was 9.6 and 10.4 years for overweight-obese and normal-weight girls, respectively. Growth velocity was higher at the age of take-off (TO) in overweight-obese children than in normal-weight children (5.2 cm/year vs. 5 cm/year in boys and 6.1 cm/year vs. 5.6 cm/year in girls); nevertheless, the growth velocity at APHV was higher for normal-weight children than for overweight-obese children (7.4 cm/year vs. 6.6 cm/year in boys and 6.8 cm/year vs. 6.6 cm/year in girls, respectively). Distance curves developed in the present study and by the World Health Organization (WHO) using LMS showed similar values for L and S parameters and a higher M value compared with the WHO reference values. This study concluded that overweight-obese children had earlier APHV and lower PHV than normal-weight children. Furthermore, Mexican children and adolescents were shorter than the WHO growth reference by age and sex.

Growth charts of Brazilian youngs: 20-years data of 95,000 children and adolescents from "Projeto Esporte Brasil".

This article aims to present growth curves for height, weight, and BMI of 95,000 Brazilian youths aged 6 to 17 years, including the five regions of the country, the Amazon region, and indigenous populations, and compare them with the World Health Organization (WHO) growth references. The final sample consisted of 52,729 boys and 42,731 girls from the "Projeto Esporte Brasil" database. Body mass and height information were used to derive the curves. The generalized additive model for location, scale, and shape was employed. In this study, we present smoothed weight-for-age, height-for-age, and BMI-for-age curves for boys and girls. Differences were observed between the results of the Brazilian curves and the WHO growth references. The developed curves will be valuable for professionals in medicine, public health, nutrition, physical education, and other related fields, regarding the assessment of physical growth in Brazilian children and adolescents and monitoring the nutritional status of this population. Additionally, these curves will facilitate the identification of individuals or subgroups at risk of diseases and delayed growth, with a greater focus on specific country-related factors.

Nutritional status and prevalence of helminthic infection among primary school children in Bangladesh: A cross-sectional study.

Malnutrition and infectious diseases, such as helminthic infections, are widespread among primary school children, especially in low- and middle-income countries. However, there are limited studies on school health in Bangladesh, particularly in rural settings. This study aimed to explore the nutritional status and prevalence of helminthic infections in relation to associated health behavior, awareness, and knowledge regarding malnutrition and helminthic infections which were evaluated by school nurses among primary school children in Bangladesh. This was a descriptive, cross-sectional survey study with a total duration of 1 month, from September to October, 2021. This study formed part of a school nurse project as a cluster non-randomized clinical trial in Bangladesh. Selected variables from that clinical trial were analyzed and reported in the results section. The study participants were primary school children from four schools in rural Bangladesh. In total, 604 children participated in the baseline survey and health checkups. Among them, 163 (27.0%) children were classified as malnourished according to the World Health Organization growth reference standard 2007. The prevalence of helminthic infections was 53 (8.8%). Approximately >50% of the children responded that they never/rarely practiced hygiene-related behaviors and had no awareness and knowledge regarding malnutrition and helminthic infections. However, differences between the variables were not statistically significant. Children's nutritional status and prevalence of helminthic infections with related deprived health behaviors, and minimal awareness and knowledge, reinforce the importance of implementing educational interventions in the future.

The Association of Children's Blood Lead Levels and Prevalence of Stunting in Tin Mining Area in Indonesia.

Metal mining and smelting activities are regarded as major sources of heavy metals such as lead, mercury, arsenic and cadmium in the environment and in humans living at the surrounding area. Among others, lead can enter and accumulate in the human body and be very influential in children's growth and development. This study aims to assess the association between children's blood lead levels and stunting in a mining area in Indonesia. A cross-sectional design was implemented by involving 193 children living in surrounding tin mining in Bangka Island, Indonesia. Venous blood was drawn and blood lead level was measured by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Stunting status was measured by anthropometry standing height and converted to sexand age-specific Z-scores based on World Health Organization (WHO) growth reference. Children's dietary intake was assessed using 24-hour dietary recall method. Statistics of chi-square test and multiple logistic regression were performed for the analyses. The geometric mean of Blood Lead Levels (BLLs) was 5.5 µg/dl (± 2.6 µg/dl; 95% CI: 5.1-5.9). The interquartile range of BLLs and height for age Z-score (HAZ) were 3.0 μg/dl and -1.5, respectively. The data revealed that 23.3% of children were stunted (HAZ < -2). The multiple logistic regression models suggest that elevated BLLs were an independent predictor of the stunting. The odds stunted blood lead concentration was elevated about 10times higher [adjusted odd ratio (AOR) = 9.75 (95% Confidence interval (CI): 3.1-30.7); p < 0.001] in comparison to the odds of normal BLLs.The BLLs of children at ages two to nine years were found associated with stunting after controlling of the mother›s education, residence and the intake of energy, protein, zinc, vitamin A, calcium and phosphorus. The study suggested that living in surrounding tin mining was dangerous for children›s health and their development.

Consumption of Soft Drinks and Overweight and Obesity Among Adolescents in 107 Countries and Regions

Soft drink consumption is associated with weight gain in children and adolescents, but little is known about the association between soft drink consumption and prevalence of the overweight and obesity in adolescents. To investigate the association of soft drink consumption with overweight and obesity in adolescents enrolled in school (hereafter, school-going adolescents) using country-level and individual-level data. This cross-sectional study used data from 3 cross-sectional studies including 107 countries and regions that participated in the Global School-Based Student Health Survey (2009-2017), the European Health Behavior in School-Aged Children study (2017-2018), and the US Youth Risk Behavior Survey (2019). Daily soft drink consumption (consuming soft drinks 1 or more times per day or not). Overweight and obesity defined by the World Health Organization Growth Reference Data. Among the 107 countries and regions, 65 were low- and middle-income, and 42 were high-income countries and regions, with a total of 405 528 school-going adolescents (mean [SD] age, 14.2 [1.7] years; 196 147 [48.4%] males). The prevalence of overweight and obesity among adolescent students varied from 3.3% (95% CI, 2.6 to 4.1) in Cambodia to 64.0% (95% CI, 57.0 to 71.6) in Niue, and the prevalence of adolescent students consuming soft drinks 1 or more times per day varied from 3.3% (95% CI, 2.9 to 3.7) in Iceland to 79.6% (95% CI, 74.0 to 85.3) in Niue. There was a positive correlation between the prevalence of daily soft drink consumption and the prevalence of overweight and obesity (R, 0.44; P < .001). The pooled analysis using individual-level data also showed a statistically significant association between daily soft drink consumption and overweight and obesity (daily soft drink consumption vs nondaily soft drink consumption), with an odds ratio of 1.14 (95% CI, 1.08 to 1.21) among school-going adolescents. In this study of 107 countries and regions, the prevalence of daily consumption of soft drinks was associated with the prevalence of overweight and obesity among adolescent students. Our results, in conjunction with other evidence, suggest that reducing soft drink consumption should be a priority in combating adolescent overweight and obesity.

1385-P: Maternal Gestational Weight Gain and Children’s Genetic Susceptibility on Childhood Adiposity—A Longitudinal Cohort Study

Few studies have assessed the association of early-life environmental and genetic factors with the risk of childhood adiposity. The aim of the present study was to investigate the interaction between maternal gestational weight gain (GWG) and children’s genetic susceptibility on childhood adiposity. The present study included 1038 mother-child pairs. Body mass index (BMI) for age Z-score (BMI-Z) and childhood overweight were evaluated according to the World Health Organization (WHO) growth reference. Genetic risk score (GRS) was established by aggregating alleles of 10 BMI susceptibility single-nucleotide polymorphisms identified from a recent study. Children born to mothers with excessive GWG had higher BMI-Z (P&amp;lt;0.001), percentage of body fat (P&amp;lt;0.001), and prevalence of overweight (28.4% vs 15.9%, P&amp;lt;0.001) than those born to mothers with adequate GWG. Children’s BMI GRS was significantly and positively associated with BMI-Z, percentage of body fat and overweight risk (all P&amp;lt;0.05). Stratified analyses showed the positive association of children’s BMI GRS with adiposity risk was especially concentrated among mothers with pre-pregnancy normal weight but excessive GWG. The present study identified an interactive effect between maternal GWG and children’s genetic susceptibility on childhood adiposity risk. The findings provided new insight into the etiology of childhood obesity and highlighted the importance of GWG management. Disclosure H.Liu: None. W.Li: None. L.Wang: None. S.Zhang: None. W.Li: None. X.Yang: None. J.Leng: None. G.Hu: None. S.Wang: None. Funding European Foundation for the Study of Diabetes/Chinese Diabetes Society/Lilly Programme for Collaborative Research between China and Europe; National Institute of Diabetes and Digestive and Kidney Diseases (R01DK100790, R01DK132011); National Institute of General Medical Sciences (U54GM104940)

Measuring severe obesity in pediatrics using body mass index-derived metrics from the Centers for Disease Control and Prevention and World Health Organization: a secondary analysis of CANadian Pediatric Weight management Registry (CANPWR) data.

To examine the (i) relationships between various body mass index (BMI)-derived metrics for measuring severe obesity (SO) over time based the Centers for Disease Control and Prevention (CDC) and World Health Organization (WHO) references and (ii) ability of these metrics to discriminate children and adolescents based on the presence of cardiometabolic risk factors. In this cohort study completed from 2013 to 2021, we examined data from 3- to 18-year-olds enrolled in the CANadian Pediatric Weight management Registry. Anthropometric data were used to create nine BMI-derived metrics based on the CDC and WHO references. Cardiometabolic risk factors were examined, including dysglycemia, dyslipidemia, and elevated blood pressure. Analyses included Pearson correlations, intraclass correlation coefficients (ICC), and receiver operator characteristic area-under-the-curve (ROC AUC). Our sample included 1,288 participants (n = 666 [52%] girls; n = 874 [68%] white). The prevalence of SO varied from 60-67%, depending on the definition. Most BMI-derived metrics were positively and significantly related to one another (r = 0.45-1.00); ICCs revealed high tracking (0.90-0.94). ROC AUC analyses showed CDC and WHO metrics had a modest ability to discriminate the presence of cardiometabolic risk factors, which improved slightly with increasing numbers of risk factors. Overall, most BMI-derived metrics rated poorly in identifying presence of cardiometabolic risk factors. Conclusion: CDC BMI percent of the 95th percentile and WHO BMIz performed similarly as measures of SO, although neither showed particularly impressive discrimination. They appear to be interchangeable in clinical care and research in pediatrics, but there is a need for a universal standard. WHO BMIz may be useful for clinicians and researchers from countries that recommend using the WHO growth reference. What is Known: • Severe obesity in pediatrics is a global health issue. • Few reports have evaluated body mass index (BMI)-derived metrics based on the World Health Organization growth reference. What is New: •Our analyses showed that the Centers for Disease Control and Prevention BMI percent of the 95th percentile and World Health Organization (WHO) BMI z-score (BMIz) performed similarly as measures of severe obesity in pediatrics. • WHO BMIz should be a useful metric to measure severe obesity for clinicians and researchers from countries that recommend using the WHO growth reference.

Socioeconomic inequality in overweight/obesity among US children: NHANES 2001 to 2018.

Previous research has found that the prevalence of childhood overweight/obesity varies depending on household income, ethnicity, and sex. The goal of our research is to examine changes over time in socioeconomic inequality and the prevalence of overweight/obesity among American children under five by sex and ethnicity. This cross-sectional analysis used data from the National Health and Nutrition Examination Surveys (NHANES) collected from 2001-02 to 2017-18. Overweight/obesity in children under five [Body Mass Index (BMI)-for-age z-score >2 standard deviations] was defined according to the World Health Organization (WHO) growth reference standard. The slope inequality index (SII) and the concentration index (CIX) were used to measure the socioeconomic inequality in overweight/obesity. Between 2001-02 and 2011-12, childhood overweight/obesity in the United States decreased from 7.3% to 6.3%, and had increased to 8.1% by 2017-18. However, this pattern varied widely by ethnicity and sex. For both the 2015-16 and 2017-18 surveys, overweight/obesity was more concentrated in the poorest household quintile for overall Caucasian children ((SII = -11.83, IC 95% = -23.17, -0.49 and CIX = -7.368, IC 95% = -13.92, -0.82) and (SII = -11.52, IC 95% = -22.13, -0.91 and CIX = -7.24, IC 95% = -13.27, -1.21), respectively) and for males of other ethnicities [(SII = -13.93, IC 95% = -26.95, -0.92) and CIX = -8.55, IC 95% = -0.86, -16.25] and (SII = -21.19, IC 95% = -40.65, -1.74) and CIX = -13.11, IC 95% = -1.42, -24.80), respectively). In the last three surveys, overweight/obesity was also more concentrated in the poorest household quintile for the overall children of other ethnicities. With the exception of African American females in the 2013-14 survey, for whom overweight/obesity was significantly concentrated in a quintile of the richest households (SII = 12.60, 95% CI = 0.24, 24.97 and CIX = 7.86, 95% CI = 15.59, 0.12); overweight/obesity was found to be concentrated in the richest household quintile for overall African American children, but not significantly so. Our findings give an update and reinforce the notion that overweight/obesity in children under the age of five has increased and that related wealth inequalities are a public health problem in the United States.

Risk factors associated with under-five stunting, wasting, and underweight in four provinces of the Democratic Republic of Congo: analysis of the ASSP project baseline data

BackgroundDetermining the magnitude and risk factors of undernutrition in a country that has one of the highest prevalence of undernutrition in the world is paramount for developing contextual interventions.MethodsThis study used baseline data from the ASSP project to estimate prevalence of stunting, wasting, and underweight in four provinces of DRC. It involved 3911 children aged 0–59 months old and mother pairs. Height-for-age Z scores, Weight-for-height Z scores, and Weight-for-age Z scores were calculated and used to classify child stunting, wasting and underweight respectively, based on the 2006 World Health Organization (WHO) growth reference. Hierarchical logistic regressions were used to identify risk factors associated with stunting, wasting and underweight. All analyses were conducted using STATA 15.1, and statistical significance was set at p < 0.05.ResultsThe prevalence of stunting, underweight and wasting was 42.7%, 21.9% and 8.2% respectively. Increasing child’s age was a risk factor associated with stunting and underweight, while sex was not associated with the 3 indicators of undernutrition. Low levels of mother’s education, mothers working in the last 12 months prior to the survey, children living in the province of Kasai occidental, children born at a health facility, children perceived by their mothers to be born very small were associated with higher risks of stunting. Factors associated with underweight were children from the province of Kasai occidental, mothers who worked in the last 12 months prior to the survey, and children perceived to be born very small or small by their mothers. Children born to mothers aged 35–49 years and children breastfed in combination with drinking water were at higher risk of wasting.ConclusionPrevalence of undernutrition in DRC is high. This study has identified certain modifiable risk factors associated with stunting, wasting and underweight. To reduce the burden of undernutrition in DRC, authorities should target factors at individual and community levels by improving women’s education, child feeding practices and promoting agriculture.

Lifestyle indices of body composition and obesity risk and prevalence among multi-ethnic adolescents in Malaysia.

The prevalence of childhood obesity in Malaysia has doubled in less than a decade. Moreover, being overweight and obese have been associated with immediate and later comorbidities, thus emphasizing the need to prevent obesity from an early age. This cross-sectional study involved 923 multi-ethnic Malaysian adolescents aged between 15 and 17 years old. Body composition was estimated using bioelectrical impedance analysis. Body mass index (BMI) classification was based on the World Health Organization (WHO) growth reference and the International Obesity Task Force (IOTF) cut-off. Meanwhile, the Child Growth Foundation (CGF) body fat reference was used to classify adolescents' adiposity. Lifestyle indices including physical activity, sedentary behavior, supplement intake, smoking and alcohol status were assessed via questionnaires. A high prevalence of overweight/obesity among the adolescents was observed according to the CGF (26%), followed by that of the WHO (24%) and then the IOTF (23%) cut-off, with high concordance values between each pair. After adjustment, a significant association was found between physical activity (PAQ score) and lean mass (p = 0.027). No lifestyle determinant was found to be a significant predictor of fat percentage. A high sedentary level increased the likelihood of obesity (OR 3.0, p < 0.01), while antioxidant-rich supplements were found to protect against obesity (OR 0.4, p < 0.05). The lifestyle predictors identified in this study may be considered when designing interventions that integrate lifestyle modifications targeting adolescents.

Relationship Between Human Milk Feeding Patterns and Growth in the First Year of Life in Infants with Congenital Heart Defects.

The purpose of this study was to determine the relationship between patterning of human milk feeding and growth of infants with congenital heart defects in the first year of life. Inclusion criteria for this prospective cohort study included infants 0-21days, who had undergone or had planned neonatal corrective or palliative surgery prior to hospital discharge, and whose mothers planned to feed human milk. Data on anthropometric measures (weight, length, head circumference) and infant milk type (human milk, formula, other) were collected at nine time points (0.5, 1, 2, 3, 4, 6, 8, 10, 12months). Anthropometric data were converted to weight-for-age, length-for-age, head circumference-for-age, and weight-for-length Z-scores using World Health Organization growth reference data. Cluster analysis identified three milk type feeding patterns in the first year: Infants fed human milk only with no formula supplementation, infants fed human milk who then transitioned to a mix of human milk and formula, and infants who fed human milk and transitioned to formula only. General linear models assessed the effect of milk type feeding patterns on growth parameters over time. No effect of milk type pattern × time was found on longitudinal changes in weight-for-age (p for interaction = 0.228), length-for-age (p for interaction = 0.173), weight-for-length (p for interaction = 0.507), or head circumference-for-age (p for interaction = 0.311) Z-scores. In this cohort study, human milk alone or combined with infant formula supported age-appropriate growth in infants with congenital heart defects in the first year.

Body growth assessment in children with IgE-mediated cow's milk protein allergy fed with a new amino acid-based formula.

BackgroundAmino acid-based formula (AAF) is a relevant dietary option for non-breastfed children. The present study was designed to evaluate the body growth pattern in cow's milk protein allergy (CMPA) children treated for 6 months with a new AAF.MethodsThis was an open-label, single arm study evaluating body growth pattern in immunoglobulin E (IgE)-mediated CMPA infants receiving a new AAF for 6 months. The outcomes were anthropometry (weight, length, head circumference), adherence to the study formula and occurrence of adverse events (AEs).ResultsFifteen children [all Caucasian and born at term; 53.3% born with spontaneous delivery; 80% male; 80% with familial allergy risk; mean age (±SD) 3 ± 2.5 months at IgE-mediated CMPA diagnosis; mean age (±SD) 16.7 ± 5.9 months at enrolment, mean total serum IgE (±SD) 298.2 ± 200.4 kU/L] were included and completed the 6-month study. Data from fifteen age- and sex-matched healthy controls were also adopted as comparison. At baseline, all CMPA patients were weaned and were receiving the new AAF. All 15 patients completed the 6-month study period. For the entire CMPA pediatric patients’ cohort, from baseline to the end of the study period, the body growth pattern resulted within the normal range of World Health Organization (WHO) growth references and resulted similar to healthy controls anthropometric values. The formula was well tolerated. The adherence was optimal and no AEs related to AAF use were reported.ConclusionsThe new AAF ensured normal growth in subjects affected by IgE-mediated CMPA. This formula constitutes another suitable safe option for the management of pediatric patients affected by CMPA.

Prevalence of overweight and obesity among saudi children: A comparison of two widely used international standards and the national growth references.

ObjectiveTo compare three body mass index (BMI) classifications that are used to assess the prevalence of overweight and obesity among Saudi children aged 6–13 years: the International Obesity Task Force (IOTF) age and gender cutoffs, the World Health Organization (WHO) growth references for school-aged children, and the Saudi (KSA) national growth references.MethodsThe sample comprised 2,169 children (52.5% girls) derived from two cross-sectional studies conducted in Riyadh and Jeddah during the 2017 and 2019 school years, respectively. Body weight and height were measured, and BMI was calculated.ResultsThe proportions (%) of the participants who were classified as underweight, overweight, and obese varied according to the reference used: IOTF reference (13.8, 18.4, and 12.7), WHO reference (17.2, 19.1, and 18.9), and KSA reference (7.0, 22.4, and 9.3), respectively, indicating higher values for overweight and obesity prevalence when the WHO references were used. Kappa agreement measures between the three references were found to be high, with the coefficients ranging from 0.936 (between the IOTF and KSA references) to 0.849 (between the IOTF and WHO references). In all three classifications, girls exhibited lower overweight or obesity prevalence than boys. Family income, but not paternal or maternal education, was significantly (p = 0.015) associated with overweight/obesity when using the IOTF standards. In addition, having a small family in the house was significantly (p < 0.05) associated with obesity, irrespective of the classification system.ConclusionInconsistency was observed when estimating the prevalence of underweight, overweight, and obesity among Saudi children. However, when defining the overall prevalence of overweight plus obesity among Saudi children, the IOTF classification system performed in a similar way to the KSA references (31.1% versus 31.7%) compared to the WHO references (38.0%).

Exposure to ultrafine particles and childhood obesity: A cross-sectional analysis of the Seven Northeast Cities (SNEC) Study in China

BackgroundStudies on the obesogenic effect of air pollution on children have been mixed and sparse. Moreover, due to insufficient air monitoring, few studies have investigated the role of more tiny but unregulated particles (ambient particles with a diameter of 0.1 μm or less, ultrafine particles). ObjectiveWe sought to explore the associations between long-term exposure to ambient ultrafine particles (UFPs) and childhood obesity in Chinese children. MethodsIn this cross-sectional study, we randomly recruited 47,990 children, aged 6–18 years, from seven cities in Northeastern China between 2012 and 2013. Child age- and sex-specific z-scores for body mass index (BMI Z-score) and weight status were generated using the World Health Organization growth reference. Four-year average concentrations of UFPs and airborne particulates of diameter ≤ 1 μm (PM1), ≤2.5 μm (PM2.5), and ≤10 μm (PM10) were estimated at home, using neural network simulated WRF-Chem model and spatiotemporal model, respectively. Confounder-adjusted generalized linear mixed models examined the associations between air pollution and BMI Z-score and the prevalence of childhood obesity. ResultWe found that UFPs exposure was associated with greater childhood BMI Z-score and a higher likelihood of obesity. Compared with the lowest quartile, higher quartiles of UFPs were associated with greater odds for obesity prevalence in children (i.e., the adjusted OR was 1.25; 95 % CI, 1.12–1.39; 1.43; 95 % CI, 1.27–1.61; and 1.41; 95 % CI, 1.25–1.58 for the second, third, and fourth quartile, respectively). Similar associations were observed for PM1, PM2.5, and PM10, and were greater in boys and children living close to roadways. ConclusionsLong-term UFPs exposure was associated with a greater likelihood of childhood obesity, and stronger associations on BMI Z-score were observed in boys and children living close to roadways. This study indicates that more attention should be paid to the health effects of UFPs, and routinely monitoring of UFPs should be considered.

Trends of stunting, underweight and overweight among children aged < 5 years in Kuwait: findings from Kuwait Nutritional Surveillance System (2007-2019).

There is a paucity of data on the secular trends of stunting and overweight among children aged < 5 years in oil-rich countries in the Middle East. To examine the secular trends of stunting, underweight and overweight in children aged < 5 years in Kuwait between 2007 and 2019. We used large individual data records (n=48 108) from the Kuwait Nutritional Surveillance System (KNSS) to calculate height/length-for-age z score (HAZ), weight-for-age z score and body mass index (BMI)-for-age z score using World Health Organization growth references. Stunting and underweight were defined as < -2 standard deviation (SD) and overweight (including obesity) as ≥ +2 SD. Trends of stunting, underweight and overweight were investigated using logistic regression models. The prevalence of stunting, underweight and overweight was 5.15%, 2.33% and 10.78%, respectively. Stunting increased during the study period, among children aged < 2 years. There was no increasing trend in overweight during the study period. These findings were corroborated by the distribution of HAZ and BMI-for-age z scores. Current prevalence of combined stunting and overweight was 1.53% in boys and 1.98% in girls. Current prevalence of stunting and underweight is low in Kuwait indicating that undernutrition is no longer a major public health issue. There is a tendency for stunting to increase in children aged < 2 years, highlighting the need to investigate early causes of stunting such as maternal and pregnancy-related factors.

Prevalence of early childhood obesity in Ireland: Differences over time, between sexes and across child growth criteria.

Various child growth criteria exist for monitoring overweight and obesity prevalence in young children. To estimate early overweight and obesity prevalence in Ireland and compare the differences in prevalence across ages, growth criteria and sexes. Longitudinal body mass index data from the nationally representative Growing Up in Ireland infant cohort (n=11 134) were categorized ('under-/normal weight', 'risk of overweight', 'overweight', 'obesity') using the sex- and age-specific International Obesity Task Force growth reference, World Health Organization growth standard and World Health Organization growth reference criteria. Differences in prevalences between criteria and sexes, and changes in each weight category and criterion across ages (9 months, 3 years, 5 years), were investigated. Across criteria, 11%-40% of children had overweight or obesity at 9 months, 14%-46% at 3 years and 8%-32% at 5 years of age. Prevalence estimates were highest using the World Health Organization growth reference, followed by International Obesity Task Force estimates. Within each criterion, prevalence decreased significantly over time (p < 0.05). However, when combining both World Health Organization criteria, as recommended for population studies, prevalence increased, due to differences in definitions between them. Significantly more boys than girls had overweight/obesity using either World Health Organization criterion, which was reversed using the International Obesity Task Force growth reference. To increase transparency and comparability, studies of childhood obesity need to consider differences in prevalence estimates across growth criteria. Effective prevention, intervention and policy-making are needed to control Ireland's high overweight and obesity prevalence.

Nutritional status of children under five years old involved in a seasonal malaria chemoprevention study in the Nanyumbu and Masasi districts in Tanzania.

BackgroundMalnutrition and malaria are common co-morbidities in low-income countries, especially among under-fives children. But the malnutrition situation in Masasi and Nanyumbu districts, its interaction with malaria infection and the influence of socioeconomic factors are not well understood.MethodsChildren aged between 3–59 months in Masasi and Nanyumbu were screened for nutritional status and malaria infection in the community. Nutritional status was determined using age and anthropometric parameters. Z-scores (weight for age (WAZ), height for age (HAZ) and weight for height (WHZ)) were calculated based on the World Health Organisation (WHO) growth reference curves. Malaria infection was determined using malaria rapid diagnostic test and microscopy. Hemoglobin concentration was assessed using HemoCue spectrophotometer, and anemia was classified as hemoglobin concentration < 11.0g/dL. Structured questionnaire was used to collect socio- demographic information electronically.ResultsA total of 2242 children, 1539 (68.6%) from Masasi and 1169 (52.1%) females were involved in the study. The mean z-scores (WAZ = -0.60 and HAZ = -1.56) were lower than the WHO reference population. The overall prevalence of malnutrition was 49%, and it was significantly higher in Nanyumbu (52.5%) than in Masasi (47.3%), (x2 = 5.045, p = 0.025). Prevalence of malnutrition was higher in boys (53.0%) than in girls (45.0%) (x2 = 13.9, p < 0.001). Stunting was the most prevalent component of undernutrition; it was slightly prevalent in Nanyumbu (46.5%) compared to Masasi (42.0%), (x2 = 3.624, p = 0.057) and in boys (48.2%) than in girls (39.1%), x2 = 17.44, p<0.001. Only 15.8% of the undernourished children had malaria infection. Sex, age group and anaemia were significantly associated with undernourishment (p<0.05), while district and malaria infection were marginally (p≤0.06) associated with undernourishment. None of the undernutrition indices was associated with malaria infection.ConclusionUndernutrition was highly prevalent in the study population and was influenced sex, age, anaemia and malaria infection. More emphasis is needed to address the malnutrition problem especially stunting in Masasi and Nanyumbu districts.

Prevalence, Patterns, and Determinants of Malaria and Malnutrition in Douala, Cameroon: A Cross-Sectional Community-Based Study.

Background Malaria and malnutrition are major public health problems in developing countries. This studywas mainly focused on the prevalence, patterns, and predictors of these conditions and their associations. Methods A cross-sectional community study was conducted from February to March 2018 among 281 participants living in two districts in Douala. A questionnaire was used to collect sociodemographic information and parasitological and anthropometric data of participants. Nutritional status was determined using age, weight, and height. Body mass index for age (BMIAZ), height-for-age (HAZ), weight-for-age (WAZ), and weight-for-height (WHZ) Z scores were computed based on the World Health Organization growth reference curves. Malaria infection was diagnosed using light-emitting diode fluorescence microscopy. Results The overall prevalence of malaria was 18.9%, mostly asymptomatic cases. Malaria infection was associated with study site (p = 0.04), age (p = 0.01), WAZ (p = 0.0049), HAZ (p = 0.03), and BMI (p = 0.02). The overall prevalence of malnutrition was 43.1%, and stunting was the main form of malnutrition recorded in children under five years of age (23.6%). The risk of being stunted in this group was about quintupled in malaria-infected participants (ARR = 4.70; p = 0.02). In those aged 5-19 years, the prevalence of underweight was significantly higher in malaria-positive individuals as compared to their negative counterparts (p = 0.02). The overall prevalence of malaria and malnutrition cooccurrence was 8.5% and varied with age (p < 0.0001) and study site (p = 0.04). Conclusion and Recommendation. Malaria was associated with malnutrition among the study participants. Early detection and treatment of these ailments would reduce morbidity and mortality.

1069-P: How Does Exposure to Overnutrition In Utero Lead to Childhood Adiposity? A Longitudinal Study in the Exploring Perinatal Outcomes among Children (EPOCH) Cohort

We explored the longitudinal sequence of metabolic changes linking overnutrition in utero to development of adiposity among initially normal weight children in the EPOCH cohort. This study includes 312 normal weight youth (body mass index [BMI] z &amp;lt;1 SD per the World Health Organization growth reference) that were exposed (n=144) or unexposed (n=168) to overnutrition in utero (maternal BMI ≥25 kg/m2 or gestational diabetes). Fasting insulin, glucose and adiposity were obtained at research visits during childhood (age 10 y) and adolescence (age 16 y). We examined associations of overnutrition in utero with natural log transformed fasting insulin at baseline, followed by associations of baseline fasting insulin with adiposity (BMI z, subcutaneous [SAT] and visceral fat depots [VAT]), insulin resistance (HOMA-IR), and fasting glucose during follow-up using linear mixed models that accounted for child age, sex, and race/ethnicity; maternal education and prenatal smoking. Baseline BMI z, fasting glucose, HOMA-IR, and adiposity markers (except for slightly higher SAT in exposed youth [+10 mm2]) were not different by exposure status. Overnutrition in utero corresponded with 14% (1%, 29%) higher baseline fasting insulin, even after controlling for child VAT, SAT, or VAT:SAT. Higher baseline fasting insulin was, in turn, associated with greater adiposity (0.41 [0.26, 0.55] SD BMI z; 13.9 [2.4, 25.4] mm2 SAT; 2.0 [0.1, 3.8] mm2 VAT) and HOMA-IR (0.88 [0.69, 1.07]) across follow-up, but not with fasting glucose. These results suggest that overnutrition in utero may result in hyperinsulinemia during childhood and precede accrual of adiposity. However, since our study started at age 10 y, studies in normal weight youth starting earlier, and with repeated assessments of insulin sensitivity, β cell function and glycemia, are needed to clarify the sequence of metabolic changes resulting from early exposures. Disclosure W. Perng: None. M. M. Kelsey: Other Relationship; Self; Boehringer Ingelheim (Canada) Ltd., Daiichi Sankyo, Janssen Pharmaceuticals, Inc., Merck Sharp &amp; Dohme Corp. K. A. Sauder: None. D. Dabelea: None. Funding National Institute of Diabetes and Digestive and Kidney Diseases (R01DK068001); Colorado Clinical and Translational Sciences Institute (KL2-TR002534 to W.P.)