Prevalence and characteristics of overweight and obesity among Chinese youth aged 12-18 years: a multistage nationwide survey

A scoping review of school-based anthropometric measurement

Though anthropometric measurement (AM) frequently occurs in school settings, it is not without risks to child wellbeing. The aim of this scoping review was to examine how AM in school settings takes place and is reported on to make recommendations on best practices. We identified and extracted data from 440 studies published since 2005 that conducted AM in school (pre-school through secondary/high school) settings. Privacy and sensitivity of AM were unclear in over 90% of studies. Thirty-one studies (7.0%) reported protecting student privacy, while nine (2.0%) reported public measurement. Only five studies reported sensitivity regarding AM (1.1%). Exactly who conducted AM was not specified in 201 studies (45.7%). Sixty-nine studies did not provide a weight status criteria citation (19.2%), and 10 used an incorrect citation (2.7%). In summary, serious shortcomings in the reporting of how AM is conducted and by whom, along with details concerning weight status classification, are evident. There is considerable room for improvement regarding the reporting of key methodological details. We propose best practices for AM in school settings, which also double as conditions that should be met before AM takes place in school settings.

Subjective Social Status Is Associated with Dysregulated Eating Behaviors and Greater Body Mass Index in an Urban Predominantly Black and Low-Income Sample

Background: Higher subjective social status (SSS) or a person’s perception of their social standing is related to better health outcomes, but few studies examined SSS in relation to obesity. Emotional eating and food addiction have been linked to obesity. Some studies indicated that manipulating SSS may lead to altered food intake, but the relationship between SSS and dysregulated eating, such as emotional eating and food addiction (FA), has not been examined. The goal of this study was to examine the associations between SSS in the community and the larger society, dysregulated eating (emotional eating and FA), and body mass index (BMI) in a majority racial minority sample. Methods: The participants (N = 89; 93% Black, 86% women, and 56% with obesity; 72% income lower than USD 2000), recruited from a publicly funded hospital in Atlanta, GA, completed the MacArthur Scale, Dutch Eating Behaviors Questionnaire, Yale Food Addiction Scale, Beck Depression Inventory, PTSD Symptom Checklist, and demographics questionnaire. Results: Twenty-two percent of the sample met the criteria for FA; those with FA had significantly higher BMI than those without (p = 0.018). In the hierarchical linear regression, the SSS community (but not in society) predicted higher severity of emotional eating (β = 0.26, p = 0.029) and FA (β = 0.30, p = 0.029), and higher BMI (β = 0.28, p = 0.046), independent from depression and PTSD symptoms. Conclusions: The findings indicate that, among Black individuals with predominantly low income in the U.S., perceived role in their community is associated with eating patterns and body mass. Given the small sample size, the results should be interpreted with caution.

Overweight, obesity, weight-related behaviors, and health-related quality of life among high-school students in Turkey

PURPOSE

The purpose of this study was to assess the prevalence of overweight and obesity, and associated socio-demographic and lifestyle behaviors among a sample of high-school students in Turkey. This study also examined the effect of overweight and obesity on health-related quality of life in students.

METHODS

A cross-sectional survey of 1216 adolescents aged 14-18 years old was conducted from 2018 to 2019 in Turkey, using questionnaire forms and anthropometric measurements. Classification of BMI was based on the WHO reference weight categories. Factors linked to adolescent obesity were identified using the binary logistic regression model and the degree of association was revealed by determining the odds ratio, at a confidence interval (CI) of 95%.

RESULTS

The prevalence of overweight was 26.1%, while that of obese students was 12.8%. Factors associated with being obese included being in the 14-15 age group, being male, having dysfunctional family relationships, spending more than 3 h/day on screen time, and performing physical activity (≥ 60 min) two times or less per week. Obese adolescents reported significantly lower scores in physical and mental health.

CONCLUSIONS

In this study, more than one-third of the students were either overweight or obese. Obesity was associated with screen time, physical activity, and family relationship. Obesity in children had a negative impact on their quality of life. Therefore, increasing physical activity, lowering screen time, and having a healthy parent-adolescent relationship could contribute to reducing the prevalence of obesity in overweight/obese students.

LEVEL OF EVIDENCE

Level V, descriptive (cross-sectional) study.

Changes in the prevalence of overweight, obesity, and severe obesity between 2010 and 2017 in preschoolers: A population-based study

We evaluated changes in overweight, obesity, and severe obesity in a population of 4- to 6-year-olds from 2010 to 2017. Anthropometric data were collected during children's preschool immunization visits in Edmonton and Calgary, Alberta, Canada. Body mass index (BMI), BMI z scores, and weight status categories were based on the World Health Organization criteria. Across 8 years, we examined population-level data from 161 114 children in which the prevalence of overweight (17.8%-15.7%; P < .001) and obesity (4.7%-4.2%; .004) decreased, while severe obesity (2.4%-2.2%; .3) remained unchanged. Overweight decreased in both boys (19.2%-16.8%; P < .0001) and girls (16.4%-14.6%; .003); obesity decreased in boys (5.3%-4.4%; .005), but not girls (4.1%-3.9%; .2). Severe obesity was stable in both sexes. Annual household income and breast feeding had positive, but variable moderating effects on overweight and obesity exclusively. Overall, reductions in overweight and obesity were positive findings, but targeted strategies are needed to reduce severe obesity in preschoolers.