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Since March 2020, South Korea has implemented social distancing measures to reduce the spread of the coronavirus disease (COVID-19). These policies resulted in significant changes in the lifestyle of Korean adults, including spending more time indoors and experiencing increased sedentary time during the pandemic. This study aimed to investigate the combined influence of sedentary lifestyle and the COVID-19 pandemic on obesity rates among adults residing in South Korea. Data were obtained from the 2018-2020 Korea National Health and Nutrition Examination Survey (KNHANES). Multiple logistic regression was used to analyze the synergistic effects of a sedentary lifestyle and COVID-19 on obesity. The prevalence of sedentary lifestyles among the participants increased from 30.4% pre-COVID-19 to 36.6% during the pandemic. Furthermore, the obesity rates were raised independently by COVID-19 (OR: 1.16, 95% CI 1.04-1.30) and by a sedentary lifestyle (OR = 1.17, 95% CI 1.04-1.31). A synergistic effect of a sedentary lifestyle and COVID-19 on obesity was identified (OR: 1.57, 95% CI 1.30-1.85). COVID-19 and a sedentary lifestyle significantly increased the risk of obesity in South Korean adults. Moreover, the combined synergistic effects of these risk factors were too substantial to be disregarded by merely summing their individual effects on obesity.The COVID-19 outbreak has had considerable global consequences. Over 200 million confirmed cases and 4 million deaths were reported within 18 months of the onset of the pandemic 1 . South Korea had the first case confirmed on January 20, 2020. The virus quickly spread, resulting in 6284 confirmed cases and 42 deaths in less than 1 month 2 . Thus, the South Korean government implemented rigorous social distancing measures from February 29, 2020, to mid-2022 to prevent the spread of the outbreak 3 . These measures involve contact tracing, quarantine, social distancing, and remote working, which cause significant lifestyle changes.Owing to social distancing, people spent more time indoors and prolonged sedentary behavior compared to pre-pandemic times 4,5 . According to a recent systematic review, 64 studies reported an increase in sedentary behavior during the respective COVID-19 pandemic closures in various populations, including children and patients with a variety of medical conditions 6 . Sedentary behavior is associated with a range of adverse health outcomes, including changes in the circulatory levels of sex hormones and considerable weight gain 5,7,8 . Obesity has emerged as a leading contributor to poor health 9 , with significant impacts on the quality of life, and an increased risk of serious medical complications, such as cardiovascular disease, musculoskeletal disorders, and various types of cancers 10 .All 40 studies from different countries included in a systematic review reported changes in body weight during the pandemic, and most showed weight gain among participants 11 . The obesity rate among South Korean adults (Body Mass Index (BMI) ≥ 25) steadily increased f...
Since March 2020, South Korea has implemented social distancing measures to reduce the spread of the coronavirus disease (COVID-19). These policies resulted in significant changes in the lifestyle of Korean adults, including spending more time indoors and experiencing increased sedentary time during the pandemic. This study aimed to investigate the combined influence of sedentary lifestyle and the COVID-19 pandemic on obesity rates among adults residing in South Korea. Data were obtained from the 2018-2020 Korea National Health and Nutrition Examination Survey (KNHANES). Multiple logistic regression was used to analyze the synergistic effects of a sedentary lifestyle and COVID-19 on obesity. The prevalence of sedentary lifestyles among the participants increased from 30.4% pre-COVID-19 to 36.6% during the pandemic. Furthermore, the obesity rates were raised independently by COVID-19 (OR: 1.16, 95% CI 1.04-1.30) and by a sedentary lifestyle (OR = 1.17, 95% CI 1.04-1.31). A synergistic effect of a sedentary lifestyle and COVID-19 on obesity was identified (OR: 1.57, 95% CI 1.30-1.85). COVID-19 and a sedentary lifestyle significantly increased the risk of obesity in South Korean adults. Moreover, the combined synergistic effects of these risk factors were too substantial to be disregarded by merely summing their individual effects on obesity.The COVID-19 outbreak has had considerable global consequences. Over 200 million confirmed cases and 4 million deaths were reported within 18 months of the onset of the pandemic 1 . South Korea had the first case confirmed on January 20, 2020. The virus quickly spread, resulting in 6284 confirmed cases and 42 deaths in less than 1 month 2 . Thus, the South Korean government implemented rigorous social distancing measures from February 29, 2020, to mid-2022 to prevent the spread of the outbreak 3 . These measures involve contact tracing, quarantine, social distancing, and remote working, which cause significant lifestyle changes.Owing to social distancing, people spent more time indoors and prolonged sedentary behavior compared to pre-pandemic times 4,5 . According to a recent systematic review, 64 studies reported an increase in sedentary behavior during the respective COVID-19 pandemic closures in various populations, including children and patients with a variety of medical conditions 6 . Sedentary behavior is associated with a range of adverse health outcomes, including changes in the circulatory levels of sex hormones and considerable weight gain 5,7,8 . Obesity has emerged as a leading contributor to poor health 9 , with significant impacts on the quality of life, and an increased risk of serious medical complications, such as cardiovascular disease, musculoskeletal disorders, and various types of cancers 10 .All 40 studies from different countries included in a systematic review reported changes in body weight during the pandemic, and most showed weight gain among participants 11 . The obesity rate among South Korean adults (Body Mass Index (BMI) ≥ 25) steadily increased f...
A healthy lifestyle is related to metabolic syndrome (MetS), but the mechanism is not fully understood. This study aimed to examine the association of components of MetS with lifestyle in a Chinese population and potential mediation role of serum uric acid (SUA) in the association between lifestyle behaviors and risk of components of MetS. Data were derived from a baseline survey of the Shaanxi urban cohort in the Regional Ethnic Cohort Study in northwest China. The relationship between components of MetS, healthy lifestyle score (HLS), and SUA was investigated by logistic or linear regression. A counterfactual-based mediation analysis was performed to ascertain whether and to what extent SUA mediated the total effect of HLS on components of MetS. Compared to those with 1 or less low-risk lifestyle factors, participants with 4–5 factors had 43.6% lower risk of impaired glucose tolerance (OR = 0.564; 95%CI: 0.408~0.778), 60.8% reduction in risk of high blood pressure (OR = 0.392; 95%CI: 0.321~0.478), 69.4% reduction in risk of hypertriglyceridemia (OR = 0.306; 95%CI: 0.252~0.372), and 47.3% lower risk of low levels of HDL cholesterol (OR = 0.527; 95%CI: 0.434~0.641). SUA mediated 2.95% (95%CI: 1.81~6.16%) of the total effect of HLS on impaired glucose tolerance, 14.68% (95%CI: 12.04~18.85%) on high blood pressure, 17.29% (95%CI: 15.01~20.5%) on hypertriglyceridemia, and 12.83% (95%CI: 10.22~17.48%) on low levels of HDL cholesterol. Increased HLS tends to reduce risk of components of MetS partly by decreasing the SUA level, which could be an important mechanism by which lifestyle influences MetS.
The concept of precision nutrition highlights the customization of nutrition to specific needs, emphasizing that a one-size-fits-all approach is not sufficient for either optimal nutrition or optimal health. Precision nutrition encompasses a range of factors, from broad strata of age and sex categories to personal characteristics such as lifestyle to an individual’s unique genotype. This breadth of scope requires us to consider how precision nutrition can be implemented in an inclusive and appropriate way for individuals and groups within real-life populations. In this narrative review, we explore the potential of precision nutrition through a life-stage approach that emphasizes age- and gender-specific nutritional needs as these change across the lifespan. Focusing on adult life stages, we delineated trends in age-related conditions and health needs among Korean adults based on national-level survey data (KNHANES 2019-2021). We also reviewed the intake of nutrients associated with these health needs to better understand how life-stage guided approaches to nutrition and supplementation could support optimal health. Looking beyond preventing deficiency or disease, we discuss how tailored supplementation of essential vitamins, minerals, and certain bioactive substances could promote healthy functioning. Finally, we discuss the complexities and challenges of developing multivitamin/multimineral supplements (MVMS) to support life-stage appropriate nutrition while maximizing adherence. Future prospects include leveraging advancements in intelligent technologies and dietary assessments for tracking nutrient intake and health indicators and using these to optimize MVMS formulations in ways that are sensitive to a person’s needs and priorities/preferences at different life stages. By adopting a life-stage guided approach to nutrition, we can better support health and well-being across the lifespan.
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