Korean Journal of Community Nutrition

Research Article

[English]
Evaluation of Nutritional Status of Vitamins and Minerals According to Consumption of Dietary Supplements in Korean Adults and the Elderly: Report Based on 2017 Korea National Health and Nutrition Examination Survey data: Ji-Myung Kim; Korean J Community Nutr 2020;25(4):329-339. Published online August 31, 2020; DOI: https://doi.org/10.5720/kjcn.2020.25.4.329

Objective
This study was undertaken to evaluate the intake of vitamins and minerals from dietary supplements (DSs) in Korean adults and elderly.
Methods
Data for this study was generated from the 2017 Korea National Health and Nutrition Examination Survey (KNHANES). We analyzed 4,204 individuals aged 19 years and older (2,579 users and 1,625 non-users). The survey included 24-h recall questions on food and DS intakes, as well as questions on DS use over the past year. The nutrient DSs evaluated were calcium, phosphorus, iron, vitamin A, thiamin, riboflavin, niacin, and vitamin C. Total nutrient intakes were obtained by combining nutrient intakes of foods and DSs consumed by each subject.
Results
Most micronutrient intakes from food (except for thiamin) in adult users, and the four micronutrient intakes (iron, vitamin A, vitamin B₂ and vitamin C) in elderly users, were significantly higher than values obtained in non-users. For total intake of nutrients and DSs, both adult and elderly users had a significantly higher intake than non-users. While proportions below Estimated Average Requirements for all micronutrients by adding respective DSs in users were significantly reduced in adults and elderly as compared to non-users, the proportions of above Tolerable Upper Intake Levels for calcium and vitamin A in adults, and vitamin A in elderly, were significantly increased. In the total subjects examined, consumption of DSs was associated with lower odds ratios of undernutrition of micronutrients, and with higher odds ratios of overnutrition of calcium, iron, and vitamin A, as compared to non-users of DSs.
Conclusions
Although DSs consumption by adults and the elderly improves the micronutrient status, it also increases the risk of excessive intake of certain vitamins and minerals.

Citations

Citations to this article as recorded by

Folate intake in Korean adults: analysis of the 2016–2018 Korea National Health and Nutrition Examination Survey with newly established folate database
Eun-Ji Park, Inhwa Han, Kyoung Hye Yu, Sun Yung Ly
Journal of Nutrition and Health.2024; 57(4): 418. CrossRef
Effect of Dietary Supplements on Vitamin and Mineral Intake Among Koreans: Data From the 2018-2020 Korea National Health and Nutrition Examination Survey
Moon Yeong Hwang, Jiyoun Hong
Food Supplements and Biomaterials for Health.2023;[Epub] CrossRef
Estimated dietary vitamin D intake and major vitamin D food sources of Koreans: based on the Korea National Health and Nutrition Examination Survey 2016–2019
Ki Nam Kim, Jung-Sug Lee, Jee-Seon Shim, Mi Ock Yoon, Hyun Sook Lee
Nutrition Research and Practice.2023; 17(3): 451. CrossRef
A Study on the Dietary Behavior of Korean Adults: Focus on Dietary Supplement Intake, Household Size, and COVID-19
Jinkyung Choi
Korean Journal of Community Nutrition.2022; 27(6): 468. CrossRef

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Original Articles

[English]
Nutrient Composition and Content of Vitamin and Mineral Supplements and Their Appropriateness for Pregnant and Lactating Women in Korea: Young Hee Han, Jeong Hyeon Seo, Gu Rum Shin, Ju Young Shin, Ye Young Jo, Taisun Hyun; Korean J Community Nutr 2018;23(4):341-351. Published online August 31, 2018; DOI: https://doi.org/10.5720/kjcn.2018.23.4.341

Abstract PDF PubReader

OBJECTIVES
Use of dietary supplements containing vitamins and minerals is growing in Korean adults, especially in pregnant and lactating women. Vitamin and mineral supplements are available in different composition and in a wide range of contents. The purposes of the study were to examine nutrient composition and content of vitamin and mineral supplements for pregnant and lactating women and assess their appropriateness as dietary supplements.
METHODS
Information on the name, manufacturer, nutrient composition, and usage of vitamin and mineral supplements for pregnant and lactating women were obtained from the homepage of the Food Safety Information Portal managed by the Ministry of Food and Drug Safety, and Korean Index of Medical Specialties. A total of 264 products were identified.
RESULTS
Among 264 products, 26.1% were single nutrient products, and 73.9% were multinutrient products. The most commonly included nutrient was iron (70.1%), folic acid (66.3%), vitamin B12 (45.8%), vitamin C (38.6%), and vitamin B6 (38.6%). Although more than 50% of products contained nutrients less than 150% of Recommended Nutrient Intakes or Adequate Intakes for daily use, some products contained inappropriately high amounts of nutrients. When a maximum daily dose of supplements was taken as described on the label, iron in 73 products (39.5%), folic acid in 14 products (8.0%) were likely to be consumed in amounts greater than Tolerable Upper Intake Levels. Most products were assessed as inappropriate for pregnant women due to the possibility of excessive intake of vitamins or minerals when compared with Dietary Reference Intakes.
CONCLUSIONS
Pregnant and lactating women need to carefully select dietary supplements containing adequate amounts of vitamins and minerals. Nutritionists should provide guidelines regarding selection of appropriate vitamin and mineral supplements for pregnant and lactating women.

Citations

Citations to this article as recorded by

Folate: 2020 Dietary reference intakes and nutritional status of Koreans
Young-Hee Han, Taisun Hyun
Journal of Nutrition and Health.2022; 55(3): 330. CrossRef
Analysis of A and E vitamer profiles in domestic raw and processed seafood consumed in Korea
Ye-Eun Park, Yu-Jeong Gwak, Jeong Kim, YuSen Guan, Won-Ho Hong, Su-Jin Park, Na-Young Yoon, Yeon-Kye Kim, Sang Kuk Han, Jiyeon Chun
Korean Journal of Food Preservation.2021; 28(7): 926. CrossRef

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[English]
Recommended Intake and Dietary Intake of Vitamin A for Koreans by Unit of Retinol Activity Equivalent: Youngnam Kim; Korean J Community Nutr 2016;21(4):344-353. Published online August 31, 2016; DOI: https://doi.org/10.5720/kjcn.2016.21.4.344

Abstract PDF PubReader

OBJECTIVES
New retinol activity equivalent (RAE) was introduced as vitamin A unit in Dietary Reference Intake (DRI) for Koreans 2015. The purpose of this study was to evaluate the adequacy of 2015 reference intake (RI) of vitamin A in RAE unit by the comparison with RI and dietary intake of vitamin A.
METHODS
Analyses on RI of vitamin A were based on the Recommended Dietary Allowances (RDA) for Koreans (1962~2000) and DRIs for Koreans (2005~2015). Analyses on Koreans dietary intake of vitamin A were based on the Korea National Health and Nutrition Examination Survey (KNHNES) reports (1969-2014). For recalculation of RI and dietary intake of vitamin A in RE to RAE, 2013 Koreans intake of retinol: carotenoids ratio of 13: 87 was applied.
RESULTS
RI of vitamin A was 600~750 RE for Korean adult, and 339~425 RAE when calculated by applying the retinol and carotenoids intake ratio. Vitamin A intakes of Koreans were <100% RI, 267~668 RE from 1969 to 2001. From 2005, vitamin A intake had increased to >700 RE, >100% RI. When vitamin A intake was converted from RE to RAE (2005~2014), 718~864 RE became 405.8~488.1 RAE, decreased to 56.5% level. The recent 2015 RI of vitamin A is 850 RAE, two times of 2005 & 2010 RI of 425 RAE for adult male.
CONCLUSIONS
When nutritional status of vitamin A was assessed for Koreans using the estimated average requirement (EAR) of 2015 (570, 460 RAE for male, female adults, respectively), ratio of deficient people increased significantly when judged based on the previous intake of Koreans, <490 RAE. We needs to examine the 2015 RI (EAR) of vitamin A, find a way to measure the accurate intake of dietary vitamin A, and to increase the dietary intake of this vitamin.

Citations

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Bioactive compounds and antioxidant activity in three types of Korean watery kimchi
Hyosun Park, Suna Kim, Jaecheol Kim, KyeongJin Lee, BoKyung Moon
Applied Biological Chemistry.2024;[Epub] CrossRef
2020 Dietary Reference Intakes for Koreans: vitamin A
Yuri Kim
Journal of Nutrition and Health.2022; 55(2): 201. CrossRef
Dynamics of Serum Retinol and Alpha-Tocopherol Levels According to Non-Alcoholic Fatty Liver Disease Status
Dongsub Jeon, Minkook Son, Juhyun Shim
Nutrients.2021; 13(5): 1720. CrossRef
Representative Nutrients Contents and Nutritional Adequacy Evaluation of Single-Dish Meal for Middle School Students
Gisun Lee, Youngnam Kim
Korean Journal of Community Nutrition.2018; 23(2): 93. CrossRef

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[English]
Vitamin A Intakes and Food Sources of Vitamin A in Female University Students: Jee Young Yeon, Yun Jung Bae; Korean J Community Nutr 2012;17(1):14-25. Published online February 29, 2012; DOI: https://doi.org/10.5720/kjcn.2012.17.1.14

Abstract PDF PubReader

The purpose of this study was to estimate the daily intake of vitamin A in Korean female university students. Vitamin A intake was estimated using an inconsecutive 3-day dietary intake survey from 481 young women. Vitamin A intake values were calculated based on the data in USDA database. Average age, height, and weight of the subjects were 20.05 years, 162.13 cm and 54.38 kg, respectively. The subject's average intake of energy was 1645.67 kcal. The mean vitamin A, retinol and beta carotene intakes were 908.35 +/- 863.18 ug retinol equivalent/day, 199.19 +/- 166.00 ug/day and 3872.59 +/- 4972.17 ug/day, respectively. The 21.83% of the subjects consumed less than the Estimated Average Requirement (EAR) for vitamin A. And subjects consumed 141.69% of the Recommended Nutrient Intake (RNI) for vitamin A. Food groups consumed with high vitamin A content in our subjects included vegetables (423.96 ug RE/day), potato and starches (213.64 ug RE/day), cereals (62.60 ug RE/day), eggs (55.17 ug RE/day) and milks (53.45 ug RE/day). The major food sources of vitamin A were sweet potato, carrot, spinach, egg, and cereal, and the top 30 foods provided 89.57% of total vitamin A. Also animal-derived food provided 9.65% of the vitamin A intake from the top 30 foods. In conclusion, judging from RNI, the vitamin A intake of the Korean female university students in this study was generally adequate. The result of our study may be used as a basis for follow-up studies of vitamin A intake like assessment of vitamin A nutritional status or evaluation of carotenoid food sources in Korean young women.

Citations

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Content of Fat-Soluble Nutrients (Cholesterol, Retinol, and α-Tocopherol) in Different Parts of Poultry Meats according to Cooking Method
Ji Hyun Lee, Hee Na Lee, Jung-Ah Shin, Ji Yeon Chun, Junsoo Lee, Ki-Teak Lee
Journal of the Korean Society of Food Science and Nutrition.2015; 44(2): 234. CrossRef

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[English]
Dietary Antioxidant Vitamins Intakes and Plasma Antioxidant Levels in Korean Elderly with Diabetes Living in Ulsan: Mi Joung Kim, Jung Hee Kim; Korean J Community Nutr 2008;13(2):276-287. Published online April 30, 2008

Abstract PDF: Diabetic mellitus in an older population is associated with increased basal oxidative stress and free radical accentuated by hyperglycemic challenge. Enhanced free radical in diabetic elderly can cause the oxidative damage and such damage can be protected by antioxidant defense system. It is believed that vitamin C, A and E are the most abundant and effective antioxidants in human plasma. The purpose of this study was to determine the antioxidant status in Korean diabetic elderly using the case-control study. The antioxidant status was examined by determining plasma levels of antioxidant vitamins (vitamin C, A, E, beta-carotene), total antioxidant status (TAS) and thiobarbituric acid reactive substance (TBARS) and intakes of vitamin C, A, beta-carotene and retiol. Fasting glucose and HbA1c levels and serum lipid profiles (triglyceride (TG), total cholesterol, HDL-cholesterol and LDL-cholesterol) were also determined. Diabetic subjects were 122 elderly persons over 60 years old, visiting public health center, and control subjects were 96 healthy elderly persons living in Ulsan, Korea and they were matched by age, gender, smoking and drinking status. The diabetic and control subjects were divided into sub-groups according to the status of using diet therapy and vitamin supplement. The subjects were interviewed to collect data on their general characteristics, disease history, vitamin supplement, diet therapy and health-related habits by questionnaires. Their dietary intakes were obtained by means of semi-quantitative food frequency questionnaires (SQFFQ). Fasting plasma glucose and HbA1c levels were significantly higher in diabetes than in control subjects, and plasma total cholesterol level of diabetes was not significantly different from that of control subjects. However serum HDL cholesterol level of diabetes was significantly lower and serum TG level of diabetes was significantly higher than those of control group. The average vitamin A and beta-carotene intakes of diabetes were significantly higher than those of control subjects. There was no significant difference in plasma vitamin C, beta-carotene, and TBARS levels between two groups, but plasma vitamin A, E and TAS levels were significantly higher in diabetes than those in control group. Plasma vitamin A and TAS levels of diabetic subjects using diet therapy were higher than those of control using diet therapy, and plasma vitamin E, beta-carotene and TAS levels of diabetic subjects using vitamin supplements were significantly higher than those of controls using vitamin supplements. These results suggested that diabetic mellitus could enhance antioxidant defences against reactive oxygen species and interest in healthy eating such as consumption of more antioxidant nutrients.

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