Locally harvested foods support serum 25-hydroxyvitamin D sufficiency in an indigenous population of Western Alaska
Background: Low serum vitamin D is associated with higher latitude, age, body fat percentage and low intake of fatty fish. Little documentation of vitamin D concentrations is available for Alaska Native populations. Objective: This study was undertaken to investigate serum 25-hydroxyvitamin D (25(OH...
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doaj-0a07aacb54134e8c87f205a5e32e1ae42020-11-25T01:30:15ZengTaylor & Francis GroupInternational Journal of Circumpolar Health1239-97362242-39822014-03-017301710.3402/ijch.v73.2273222732Locally harvested foods support serum 25-hydroxyvitamin D sufficiency in an indigenous population of Western AlaskaBret Luick0Andrea Bersamin1Judith S. Stern2 Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA Department of Nutrition, University of California, Davis, CA, USABackground: Low serum vitamin D is associated with higher latitude, age, body fat percentage and low intake of fatty fish. Little documentation of vitamin D concentrations is available for Alaska Native populations. Objective: This study was undertaken to investigate serum 25-hydroxyvitamin D (25(OH)D) concentrations of the Yup'ik people of southwestern Alaska in relation to demographic and lifestyle variables, particularly with the use of locally harvested (local) foods. Design: Cross-sectional study. Methods: We estimated 25(OH)D, dietary vitamin D and calcium, percent of energy from local foods and demographic variables in 497 Yup'ik people (43% males) aged 14–92 residing in southwestern Alaska. Sampling was approximately equally divided between synthesizing and non-synthesizing seasons, although the preponderance of samples were drawn during months of increasing daylight. Results: Mean vitamin D intake was 15.1±20.2 µg/d, while local foods accounted for 22.9±17.1% of energy intake. The leading sources of vitamin D were local fish (90.1%) followed by market foods. Mean 25(OH)D concentration was 95.6±40.7 nmol/L. Participants in the upper 50th percentile of 25(OH)D concentration tended to be older, male, of lower body mass index, sampled during the synthesizing season, and among the upper 50th percentile of local food use. Conclusions: A shift away from locally harvested foods will likely increase the risk for serum 25(OH)D insufficiency in this population.http://www.circumpolarhealthjournal.net/index.php/ijch/article/download/22732/pdf_1Vitamin D25-hydroxyvitamin DAlaska NativesTraditional FoodsSeasonalityDietary transition |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bret Luick Andrea Bersamin Judith S. Stern |
spellingShingle |
Bret Luick Andrea Bersamin Judith S. Stern Locally harvested foods support serum 25-hydroxyvitamin D sufficiency in an indigenous population of Western Alaska International Journal of Circumpolar Health Vitamin D 25-hydroxyvitamin D Alaska Natives Traditional Foods Seasonality Dietary transition |
author_facet |
Bret Luick Andrea Bersamin Judith S. Stern |
author_sort |
Bret Luick |
title |
Locally harvested foods support serum 25-hydroxyvitamin D sufficiency in an indigenous population of Western Alaska |
title_short |
Locally harvested foods support serum 25-hydroxyvitamin D sufficiency in an indigenous population of Western Alaska |
title_full |
Locally harvested foods support serum 25-hydroxyvitamin D sufficiency in an indigenous population of Western Alaska |
title_fullStr |
Locally harvested foods support serum 25-hydroxyvitamin D sufficiency in an indigenous population of Western Alaska |
title_full_unstemmed |
Locally harvested foods support serum 25-hydroxyvitamin D sufficiency in an indigenous population of Western Alaska |
title_sort |
locally harvested foods support serum 25-hydroxyvitamin d sufficiency in an indigenous population of western alaska |
publisher |
Taylor & Francis Group |
series |
International Journal of Circumpolar Health |
issn |
1239-9736 2242-3982 |
publishDate |
2014-03-01 |
description |
Background: Low serum vitamin D is associated with higher latitude, age, body fat percentage and low intake of fatty fish. Little documentation of vitamin D concentrations is available for Alaska Native populations. Objective: This study was undertaken to investigate serum 25-hydroxyvitamin D (25(OH)D) concentrations of the Yup'ik people of southwestern Alaska in relation to demographic and lifestyle variables, particularly with the use of locally harvested (local) foods. Design: Cross-sectional study. Methods: We estimated 25(OH)D, dietary vitamin D and calcium, percent of energy from local foods and demographic variables in 497 Yup'ik people (43% males) aged 14–92 residing in southwestern Alaska. Sampling was approximately equally divided between synthesizing and non-synthesizing seasons, although the preponderance of samples were drawn during months of increasing daylight. Results: Mean vitamin D intake was 15.1±20.2 µg/d, while local foods accounted for 22.9±17.1% of energy intake. The leading sources of vitamin D were local fish (90.1%) followed by market foods. Mean 25(OH)D concentration was 95.6±40.7 nmol/L. Participants in the upper 50th percentile of 25(OH)D concentration tended to be older, male, of lower body mass index, sampled during the synthesizing season, and among the upper 50th percentile of local food use. Conclusions: A shift away from locally harvested foods will likely increase the risk for serum 25(OH)D insufficiency in this population. |
topic |
Vitamin D 25-hydroxyvitamin D Alaska Natives Traditional Foods Seasonality Dietary transition |
url |
http://www.circumpolarhealthjournal.net/index.php/ijch/article/download/22732/pdf_1 |
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