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Seasonal changes in vitamin D status among Danish adolescent girls and elderly women: the influence of sun exposure and vitamin D intake.
Eur J Clin Nutr. 2013 Mar; 67(3):270-4.EJ

Abstract

BACKGROUND/OBJECTIVES

To determine seasonal variation in vitamin D status in healthy Caucasian adolescent girls and elderly community-dwelling women living in Denmark, and to quantify the impact of sun exposure and intake on the seasonal changes in vitamin D status.

SUBJECTS/METHODS

A 1-year longitudinal observational study of 54 girls (11-13 years) and 52 women (70-75 years). The participants were examined three times (winter-summer-winter). Serum 25-hydroxyvitamin D (S-25OHD) concentration and vitamin D intake were measured at each visit. Sun exposure was measured during summer.

RESULTS

S-25OHD concentrations (winter, summer, winter) were median (25, 75 percentiles) 23.4 (16.5, 36.4), 60.3 (42.7, 67.7), 29.5 (22.2, 40.4) and 47.2 (27.3, 61.1), 67.3 (35.1, 79.2), 50.5 (32.7, 65.5)nmol/l for girls and women, respectively. The usual sun habits were determinant (P=0.002) for change in vitamin D status from winter to summer. Vitamin D intake from supplements (P<0.0001) and diet (P=0.002) were determinants for change in vitamin D status from summer to winter. Winter vitamin D status of 50 nmol/l is achievable when vitamin D status the previous summer was ≈ 100 nmol/l. If summer vitamin D status is only ≈ 60 nmol/l, vitamin D status the following winter would be ≈ 28 nmol/l.

CONCLUSIONS

Low vitamin D status among adolescent girls and elderly women during two consecutive winter seasons, improved vitamin D status during the summer and better vitamin D status in women than in girls was found. The estimations show that a summer S-25OHD concentration ≈ 100 nmol/l is needed to achieve a concentration of ≈ 50 nmol/l the following winter.

Authors+Show Affiliations

Department of Nutrition, National Food Institute, Technical University of Denmark, Søborg, Denmark. rian@food.dtu.dkNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23388663

Citation

Andersen, R, et al. "Seasonal Changes in Vitamin D Status Among Danish Adolescent Girls and Elderly Women: the Influence of Sun Exposure and Vitamin D Intake." European Journal of Clinical Nutrition, vol. 67, no. 3, 2013, pp. 270-4.
Andersen R, Brot C, Jakobsen J, et al. Seasonal changes in vitamin D status among Danish adolescent girls and elderly women: the influence of sun exposure and vitamin D intake. Eur J Clin Nutr. 2013;67(3):270-4.
Andersen, R., Brot, C., Jakobsen, J., Mejborn, H., Mølgaard, C., Skovgaard, L. T., Trolle, E., Tetens, I., & Ovesen, L. (2013). Seasonal changes in vitamin D status among Danish adolescent girls and elderly women: the influence of sun exposure and vitamin D intake. European Journal of Clinical Nutrition, 67(3), 270-4. https://doi.org/10.1038/ejcn.2013.3
Andersen R, et al. Seasonal Changes in Vitamin D Status Among Danish Adolescent Girls and Elderly Women: the Influence of Sun Exposure and Vitamin D Intake. Eur J Clin Nutr. 2013;67(3):270-4. PubMed PMID: 23388663.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Seasonal changes in vitamin D status among Danish adolescent girls and elderly women: the influence of sun exposure and vitamin D intake. AU - Andersen,R, AU - Brot,C, AU - Jakobsen,J, AU - Mejborn,H, AU - Mølgaard,C, AU - Skovgaard,L T, AU - Trolle,E, AU - Tetens,I, AU - Ovesen,L, Y1 - 2013/02/06/ PY - 2013/2/8/entrez PY - 2013/2/8/pubmed PY - 2013/9/17/medline SP - 270 EP - 4 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 67 IS - 3 N2 - BACKGROUND/OBJECTIVES: To determine seasonal variation in vitamin D status in healthy Caucasian adolescent girls and elderly community-dwelling women living in Denmark, and to quantify the impact of sun exposure and intake on the seasonal changes in vitamin D status. SUBJECTS/METHODS: A 1-year longitudinal observational study of 54 girls (11-13 years) and 52 women (70-75 years). The participants were examined three times (winter-summer-winter). Serum 25-hydroxyvitamin D (S-25OHD) concentration and vitamin D intake were measured at each visit. Sun exposure was measured during summer. RESULTS: S-25OHD concentrations (winter, summer, winter) were median (25, 75 percentiles) 23.4 (16.5, 36.4), 60.3 (42.7, 67.7), 29.5 (22.2, 40.4) and 47.2 (27.3, 61.1), 67.3 (35.1, 79.2), 50.5 (32.7, 65.5)nmol/l for girls and women, respectively. The usual sun habits were determinant (P=0.002) for change in vitamin D status from winter to summer. Vitamin D intake from supplements (P<0.0001) and diet (P=0.002) were determinants for change in vitamin D status from summer to winter. Winter vitamin D status of 50 nmol/l is achievable when vitamin D status the previous summer was ≈ 100 nmol/l. If summer vitamin D status is only ≈ 60 nmol/l, vitamin D status the following winter would be ≈ 28 nmol/l. CONCLUSIONS: Low vitamin D status among adolescent girls and elderly women during two consecutive winter seasons, improved vitamin D status during the summer and better vitamin D status in women than in girls was found. The estimations show that a summer S-25OHD concentration ≈ 100 nmol/l is needed to achieve a concentration of ≈ 50 nmol/l the following winter. SN - 1476-5640 UR - https://www.unboundmedicine.com/medline/citation/23388663/Seasonal_changes_in_vitamin_D_status_among_Danish_adolescent_girls_and_elderly_women:_the_influence_of_sun_exposure_and_vitamin_D_intake_ L2 - https://doi.org/10.1038/ejcn.2013.3 DB - PRIME DP - Unbound Medicine ER -