Serum 25-hydroxyvitamin D but not dietary vitamin D intake is associated with hemoglobin in women of reproductive age in rural northern Vietnam

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dc.creatorMichalski, Ellen S.
dc.creatorNguyen, Phuong Hong
dc.creatorGonzalez-Casanova, Ines
dc.creatorNguyen, Son
dc.creatorMartorell, Reynaldo
dc.creatorTangpricha, Vin
dc.creatorRamakrishnan, Usha
dc.date2017
dc.date2024-06-21T09:24:13Z
dc.date2024-06-21T09:24:13Z
dc.date.accessioned2026-06-27T15:44:24Z
dc.descriptionBackground and objectives Hypovitaminosis D and anemia are both prevalent in Vietnam, and low vitamin D status may be a risk factor for anemia. This study aimed to 1) describe vitamin D intake and its determinants, and 2) examine the associations of vitamin D intake and serum 25(OH)D concentrations with hemoglobin and anemia. Methods and study design We used data from the baseline survey of a pre-conceptual micronutrient supplementation trial in women of reproductive age (WRA) in Thai Nguyen, Vietnam (N = 4961). Vitamin D intake was estimated using a semi-quantitative food frequency questionnaire (FFQ). Multivariable regression models were used for the analyses. Results Median vitamin D intake was 0.2 µg/d (8.0 IU) [IQR: 0.4]. Age, being a farmer, food insecurity, and body mass index (BMI) were inversely associated with vitamin D intake, while socioeconomic status (SES), total energy intake, and education were positively associated with vitamin D intake. Vitamin D intake was not associated with hemoglobin concentration or anemia after adjusting for age, BMI, total energy intake, transferrin receptor, C-reactive protein, α1-acid glycoprotein, SES, occupation, education, ethnicity, and food insecurity (P = 0.56 and P = 0.65 for hemoglobin and anemia, respectively). Controlling for the same covariates, 25(OH)D <50 nmol/L (vs. ≥50 nmol/L) was associated with decreased hemoglobin concentrations (β = −0.91 (SE:0.42), P = 0.03), but not with anemia (P = 0.11). Conclusions Low vitamin D status may be linked to reduced hemoglobin concentrations, but the role of diet in this association was not evident in this population of WRA in Vietnam where dietary vitamin D intake was very low.
dc.identifierhttps://hdl.handle.net/10568/148267
dc.identifier.urihttp://hdl.handle.net/123456789/113267
dc.languageen
dc.publisherElsevier
dc.rightsOpen Access
dc.sourceMichalski, Ellen S.; Nguyen, Phuong Hong; Gonzalez-Casanova, Ines; Nguyen, Son V.; Martorell, Reynaldo; Tangpricha, Vin; and Ramakrishnan, Usha. 2017. Serum 25-hydroxyvitamin D but not dietary vitamin D intake is associated with hemoglobin in women of reproductive age in rural northern Vietnam. Journal of Clinical & Translational Endocrinology 8(2017): 41-48. https://doi.org/10.1016/j.jcte.2017.05.001
dc.subjectanaemia
dc.subjectgender
dc.subjectvitamin d
dc.subjectregression analysis
dc.subjecthaemoglobin
dc.subjectnutrition
dc.subjectdiet
dc.titleSerum 25-hydroxyvitamin D but not dietary vitamin D intake is associated with hemoglobin in women of reproductive age in rural northern Vietnam
dc.typeJournal Article

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