Risk factors for low vitamin D status in Korean adolescents: the Korea National Health and Nutrition Examination Survey (KNHANES) 2008–2009

Lee, Young Ah; Kim, Hwa Young; Hong, Hyunsook; Kim, Ji Young; Kwon, Hyun Jin; Shin, Choong Ho; Yang, Sei Won

doi:10.1017/s1368980013000438

Cited by 34 publications

(58 citation statements)

References 25 publications

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“…Generally, increasing age was found to be a risk factor for anemia, vitamin D deficiency, and folate deficiency among male and female adolescents. Likewise, studies in Nigeria, India, and South Korea found increasing age to be inversely associated with plasma retinol, Hb, and serum 25(OH)D, respectively, for both sexes. Among adolescent girls, four Indian studies reported increasing age as a determinant of anemia .…”

Section: Resultsmentioning

confidence: 86%

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Socio‐cultural and economic determinants and consequences of adolescent undernutrition and micronutrient deficiencies in LLMICs: a systematic narrative review

Madjdian

Azupogo

Osendarp

et al. 2018

Annals of the New York Academy of Sciences

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Adolescent undernutrition is a persisting public health problem in low and lower middle income countries (LLMICs). Nutritional trajectories are complexly interrelated with socio-cultural and economic (SCE) trajectories. However, a synthesis of the SCE determinants or consequences of undernutrition in adolescents is lacking. We undertook a narrative review of published literature to provide a narrative overview of the SCE determinants and consequences associated with undernutrition among adolescents in LLMICs. We identified 98 articles from PubMed, SCOPUS, and CAB-Abstracts on determinants and consequences of undernutrition as defined by stunting, underweight, thinness, and micronutrient deficiencies. At the individual level, significant determinants included age, sex, birth order, religion, ethnicity, educational and literacy level, working status, and marital status. At the household level, parental education and occupation, household size and composition, income, socioeconomic status, and resources were associated with undernutrition. Only a few determinants at the community/environmental level, including residence, sanitation, school type, and seasonality, were identified. The consequences of adolescent undernutrition were mostly related to education and cognition. This review underscores the importance of the broad range of context-specific SCE factors at several levels that influence adolescent nutritional status and shows that further research on SCE consequences of undernutrition is needed.

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Section: Resultsmentioning

confidence: 86%

“…Similarly, literacy and a higher educational level were positively associated with Hb and folate status, respectively. Nevertheless, educational level was once found to be inversely associated with serum 25(OH)D among South Korean adolescents …”

Section: Resultsmentioning

confidence: 99%

Socio‐cultural and economic determinants and consequences of adolescent undernutrition and micronutrient deficiencies in LLMICs: a systematic narrative review

Madjdian

Azupogo

Osendarp

et al. 2018

Annals of the New York Academy of Sciences

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“…Previous reports studied children within a narrow age range, such as adolescents or toddlers, limiting the ability of such studies to reveal any negative effect of age (10,(21)(22)(23)(24)(25)(26) . Some reports in Korea and Europe have also shown that younger adolescents had higher serum 25(OH)D concentrations than older ones (5,(21)(22)(23)(24)(25)(26) , while Willis et al showed that age was negatively associated with 25(OH)D concentration in prepubertal females, although this was abolished by controlling for fat-free soft tissue mass (10) . The only study on a wider range of younger ages was that of Weng et al in the USA (27) , who found an inverse relationship between 25(OH)D concentration and age in American children and adolescents after adjustment for confounding factors such as puberty and vitamin D intake.…”

Section: Factors Associated With Serum 25-hydroxyvitamin D Concentratmentioning

confidence: 99%

Vitamin D deficiency and its associated risk factors in children and adolescents in southern Iran

Saki

Dabbaghmanesh

Bakhshayeshkaram

2015

Public Health Nutr.

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Objectives: To evaluate prevalence of vitamin D deficiency and its associated factors in southern Iranian children. Design: Cross-sectional study. Anthropometric and pubertal characteristics were assessed by a trained physician. Physical activity and sun exposure were evaluated using standard questionnaires. Body composition measurements were performed using dual-energy X-ray absorptiometry. Serum Ca, P alkaline phosphatase and 25-hydroxyvitamin D (25(OH)D) were assessed in all children. Statistical analysis was done using the statistical software package IBM SPSS Statistics 18·0. Subjects: Iranian children (n 477) aged 9-18 years. Setting: Fars Province, Iran, 2011. Results: Of the children, 81·3 % were 25(OH)D deficient. There was no significant difference in 25(OH)D concentration between boys and girls (P = 0·3). 25(OH)D concentration was associated with BMI (r = − 0·1, P = 0·02), pubertal status (r = − 0·08, P = 0·04) and sun exposure (r = 0·10, P = 0·04). Fat mass index was associated with 25(OH)D concentration (r = − 0·13, P = 0·03), but not lean mass index (P = 0·86). In multiple regression analysis with adjustment for confounding factors, age and puberty were found to be independently associated with 25(OH)D concentration (P = 0·008 and P = 0·006); there was a significant correlation between exercise and 25(OH)D concentration after adjustment for either BMI (P = 0·01) or fat mass index (P = 0·02). Conclusions: 25(OH)D deficiency is highly prevalent among children in the south of Iran. It is related to insufficient sun exposure, low physical activity, advancing age and pubertal stage. Measures should be taken to improve the health of southern Iranian children in this critical age group by preventing 25(OH)D deficiency.

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“…[41] This may be related to the high latitude (34°–38° N) of Korea, and reduced levels of time spent outdoors (owing to high educational pressure and indoor working conditions). [41–43] Considering the high prevalence of myopia and deficiency of vitamin D in the Korean population, it would be useful to understand the associations of vitamin D deficiency and daily sun exposure time with myopia in this population. Thus, in this cross sectional study, we investigated the relationship between serum 25(OH)D and daily sun exposure time and the prevalence of myopia in Korean adults.…”

Section: Introductionmentioning

confidence: 99%

Serum 25-hydroxyvitamin D level is associated with myopia in the Korea national health and nutrition examination survey

Kwon

Choi

2016

Medicine

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The aim of this article was to assess the associations of serum 25-hydroxyvitamin D [25(OH)D] and daily sun exposure time with myopia in Korean adults.This study is based on the Korea National Health and Nutrition Examination Survey (KNHANES) of Korean adults in 2010–2012; multiple logistic regression analyses were performed to examine the associations of serum 25(OH)D levels and daily sun exposure time with myopia, defined as spherical equivalent ≤–0.5D, after adjustment for age, sex, household income, body mass index (BMI), exercise, intraocular pressure (IOP), and education level. Also, multiple linear regression analyses were performed to examine the relationship between serum 25(OH)D levels with spherical equivalent after adjustment for daily sun exposure time in addition to the confounding factors above.Between the nonmyopic and myopic groups, spherical equivalent, age, IOP, BMI, waist circumference, education level, household income, and area of residence differed significantly (all P < 0.05). Compared with subjects with daily sun exposure time <2 hour, subjects with sun exposure time ≥2 to <5 hour, and those with sun exposure time ≥5 hour had significantly less myopia (P < 0.001). In addition, compared with subjects were categorized into quartiles of serum 25(OH)D, the higher quartiles had gradually lower prevalences of myopia after adjustment for confounding factors (P < 0.001). In multiple linear regression analyses, spherical equivalent was significantly associated with serum 25(OH)D concentration after adjustment for confounding factors (P = 0.002).Low serum 25(OH)D levels and shorter daily sun exposure time may be independently associated with a high prevalence of myopia in Korean adults. These data suggest a direct role for vitamin D in the development of myopia.

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Risk factors for low vitamin D status in Korean adolescents: the Korea National Health and Nutrition Examination Survey (KNHANES) 2008–2009

Cited by 34 publications

References 25 publications

Socio‐cultural and economic determinants and consequences of adolescent undernutrition and micronutrient deficiencies in LLMICs: a systematic narrative review

Socio‐cultural and economic determinants and consequences of adolescent undernutrition and micronutrient deficiencies in LLMICs: a systematic narrative review

Vitamin D deficiency and its associated risk factors in children and adolescents in southern Iran

Serum 25-hydroxyvitamin D level is associated with myopia in the Korea national health and nutrition examination survey

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