Korean Journal of Community Nutrition

[English]
Regional differences in protein intake and protein sources of Korean older adults and their association with metabolic syndrome using the 2016–2019 Korea National Health and Nutrition Examination Surveys: a cross-sectional study: You-Sin Lee, Yoonna Lee; Korean J Community Nutr 2024;29(3):173-188. Published online June 30, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.3.173

Abstract PDF PubReader ePub: Objectives
The study aim was to analyze the regional differences in dietary protein intake and protein sources of Korean older adults and their association with metabolic syndrome.
Methods
Study participants were 1,721 older adults aged 65 and over who participated in 2016–2019 Korea National Health and Nutrition Examination Survey. Using 24-hour recall dietary intake data, protein intake and their food sources were examined. The association between protein intake and metabolic syndrome, obesity, and abdominal obesity were analyzed by multiple logistic regression.
Results
Total protein and animal protein intakes were higher in urban area (60.0 g, 24.4 g, respectively) than in rural area (54.6 g, 19.6 g, respectively). With increase of protein intake level, animal to total protein proportion was increased in both areas. Total protein and plant protein intake was negatively associated with the risk of obesity, abdominal obesity in both areas. Animal protein intake was negatively associated with the risk of obesity in both areas, and with abdominal obesity only in urban area. In urban area, plant protein intake was also negatively associated with the risks of metabolic syndrome, elevated triglyceride, and reduced high density lipoprotein-cholesterol. In urban area, the risk of metabolic syndrome was decreased when their protein intake was more than 0.91 g/kg and was lowest when their protein intake was more than 1.5 g/kg (P for trend < 0.001).
Conclusions
Korean older adults showed inadequate protein intake and those in rural area showed lower animal protein intake than in urban area. The risk of obesity and metabolic syndrome was decreased with the increase of protein intake level. These findings may help develop effective nutrition support strategy for older adults to reduce regional health disparity.

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[Korean]
Changes in nutritional status of Korean older adults during COVID-19 Pandemic by household income and demographic factors -using the Korea National Health and Nutrition Examination Survey(2019-2020): a cross-sectional study: You-Sin Lee, Yoonna Lee; Korean J Community Nutr 2023;28(4):302-316. Published online August 31, 2023; DOI: https://doi.org/10.5720/kjcn.2023.28.4.302

Objectives
The study aim was to identify changes in the nutritional status of older adults during the COVID-19 pandemic according to household income and demographic characteristics.
Methods
Study participants were 2,408 adults aged 65 and over who participated in the 2019–2020 Korea National Health and Nutrition Examination Survey (KNHANES). To examine changes in nutrient intake levels resulting from COVID-19, data of 2019 and of 2020 were compared. Study participants were divided into three groups based on household income level to compare these changes. The changes were compared according to household income level, age group, and household type.
Results
Percentages of recommended intakes for energy, protein, and most micronutrients were the lowest for the low-income group of both males and females in 2020. The Mean Adequacy Ratio (MAR) score was the lowest for the low-income group in both years. When comparing nutrient density for 2019 and 2020 by income group, the male low-income group experienced a decrease in nutrient densities of vitamin A, thiamine, calcium, and iron. For the same group, a decreased percentage for energy intake from protein was noted. Fruit intake was lowest in the low-income group for both males and females. Low-income males had the lowest intake levels for meat, fish, eggs, and legumes in both 2019 and 2020 and the lowest milk and milk product intake levels in 2020. Older adults living alone or single older adults with children had lower MAR scores than those living with a spouse. Older adults living alone experienced decreases in energy and thiamine and iron intake levels in 2020 compared to their intake levels in 2019.
Conclusions
Because of the COVID-19 pandemic, nutrition intake levels worsened for older adult males in the low-income group and older adults living alone. This finding shows the need for a more systematic nutritional support strategy for the vulnerable older adults population in national disaster situations.

Citations

Citations to this article as recorded by

Development of Protein Enhanced Diet for Socially Vulnerable Elderly
Jihye Hong, Hyung-Geun Jeon, Seulgi Kim, Gitae Park
Journal of the East Asian Society of Dietary Life.2024; 34(1): 39. CrossRef

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[Korean]
Comparison of the Nutrient Intake and Health Status of Elderly Koreans According to their BMI Status: Focus on the Underweight Elderly Population: You-Sin Lee, Yoonna Lee; Korean J Community Nutr 2022;27(5):422-434. Published online October 31, 2022; DOI: https://doi.org/10.5720/kjcn.2022.27.5.422

Abstract PDF

Objectives
With an increase in the population of the elderly in Korea, their nutritional status has become a cause for concern. This study was designed to compare the nutritional intake and health status of the Korean elderly according to their body mass index.
Methods
The subjects were 3,274 elderly people aged 65 and above who had participated in the 2016-2018 Korea National Health and Nutrition Examination Survey. The subjects were divided into four groups: underweight, normal, overweight, and obese, based on their BMI. The general characteristics, daily energy, and nutrient intakes, nutrient intakes compared to the recommended nutrient intake, percentage of participants whose nutrient intake was lower than the estimated average requirement (EAR), index of nutrient quality, the mean adequacy ratio (MAR), intakes by food group, and health status of the four groups were compared.
Results
Underweight elderly people showed lower energy, lipids, dietary fiber, vitamin C, riboflavin, niacin, phosphorus, sodium, and potassium intake and MAR score (P < 0.001) compared to the normal or obese elderly. The mean protein, riboflavin, niacin, vitamin C, phosphorus, and iron intake of the underweight elderly was lower than the EAR (P < 0.05). Underweight elderly people also had a lower intake of vegetables and fats, oil and sweets food groups than the other groups (P < 0.001). The prevalence of diabetes and dyslipidemia was higher in the obese group, but the percentage of anemia was higher in the underweight group.
Conclusions
Underweight elderly people were vulnerable to undernutrition and were at a higher risk of anemia.

Citations

Citations to this article as recorded by

Effect of physical activity on free fatty acids, insulin resistance, and blood pressure in obese older women
Woo-Hyeon Son, Min-Seong Ha, Tae-Jin Park
Physical Activity and Nutrition.2024; 28(2): 1. CrossRef

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