Difference in Sugar-Sweetened Beverage Consumption before and during the COVID-19 Pandemic among Korean Adolescents.

BACKGROUND: Previous studies have identified various factors associated with sugar-sweetened beverage (SSB) consumption among children and adolescents. Recent studies attempted to analyze changes in SSB consumption of adolescents during the COVID-19 pandemic and showed conflicting results. OBJECTIVES: This study aimed to estimate the difference in SSB consumption before (2018-2019) and during (2020-2021) the COVID-19 pandemic among Korean adolescents. METHODS: The study population consisted of students (n = 227,139) aged 12-18 y from the Korean Youth Risk Behavior Web-based Survey (KYRBWS). Data collection was done between 2018 and 2021. The primary outcome was the difference in the SSB consumption status (none/<7 times/wk, ≥7 times/wk) before and during the COVID-19 pandemic. Multinomial logistic regression was used to examine the association. Additional analysises were also conducted by gender, school grades, household income, grade point average, region, household members, fast-food intake, and fruit intake. RESULTS: The COVID-19 pandemic was associated with a decrease in adolescents' SSB intake. [(<7 times/wk) 2019: 59.4, 2020: 58.8, (≥7 times/wk) 2019: 35.3, 2020: 33.4]. CONCLUSIONS: The study found a difference in SSB consumption among Korean adolescents between before and during the COVID-19 pandemic. These findings are noteworthy considering the importance of continuous care in managing SSB intake.

Did the COVID-19 Lockdown Reduce Smoking Rate in Adolescents?

This study examined the temporal trend of smoking use and the prevalent differences in the use of different types of cigarettes for Korean adolescents before and during the COVID-19 pandemic. In Korea, all use of e-cigarettes, including regular cigarettes, is considered smoking. Since adolescents are susceptible to peer influences in risky behaviors including smoking, social distancing could affect the smoking behaviors of youth under these unusual circumstances during the pandemic. In this study, we analyzed the Korea Youth Risk Behavior Web-based Survey (KYRBW) data collected from 2018 to 2021 to examine the association between smoking status and other covariates during the COVID-19 pandemic. As a result, it was confirmed that the influence of second-hand smoke on the smoking rate decreased before and after COVID-19, which is interpreted as a result of the social distancing policy caused by the pandemic.

Did the increase in sitting time due to COVID-19 lead to obesity in adolescents?

INTRODUCTION: Since adolescent with obesity is closely linked with the incidence of cardiovascular disease, it is important to identify the factors that increase the prevalence of adolescent with obesity and prevent it early. This study aimed to examine which of the demographic and lifestyle factors including sitting hours per week for purposes other than study had the greatest influence on Korean adolescents with obesity during the coronavirus disease 2019 (COVID-19) pandemic. METHODS: We used the Korean Youth Risk Behavior Web-based Survey (KYRBWS) data. The primary outcome was the relationship between sitting hours and obesity during and after the COVID-19 pandemic. Multiple logistic regression analysis was performed to examine which of the demographic and lifestyle factors including sitting hours per week for purposes other than study had the greatest influence on Korean adolescents' obesity status. RESULTS: The prevalence of obesity was significantly higher during the COVID-19 than before the COVID-19 (OR, 1.268, CI:1.232-1.305). There was a significant increase in the OR for sitting hours per week for purposes other than study (OR, 1.021, 95% CI, 1.019-1.024). Compared to low household income, the OR decreased for middle (OR = 0.798, 95% CI:0.77, 0.826) and high-income household students (OR, 0.833, 95% CI: 0.803-0.865). DISCUSSION/CONCLUSION: The results of this study confirmed the relationship between sit-ting hours and obesity in adolescents during the pandemic. To prevent adolescent with obesity, further studies are needed to focus on the importance of promoting health policy in adolescents to avoid the continuous rising of its prevalence and needed to understand whether the increase in obesity rates during the pandemic is a temporary trend.