The Problem of Vitamin D Scarcity: Cultural and Genetic Solutions by Indigenous Arctic and Tropical Peoples
Vitamin D metabolism differs among human populations because our species has adapted to different natural and cultural environments. Two environments are particularly difficult for the production of vitamin D by the skin: the Arctic, where the skin receives little solar UVB over the year; and the Tr...
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ftdoajarticles:oai:doaj.org/article:41c51e2a98b347d1a447d087160f2f69 2023-05-15T14:48:14+02:00 The Problem of Vitamin D Scarcity: Cultural and Genetic Solutions by Indigenous Arctic and Tropical Peoples Peter Frost 2022-09-01T00:00:00Z https://doi.org/10.3390/nu14194071 https://doaj.org/article/41c51e2a98b347d1a447d087160f2f69 EN eng MDPI AG https://www.mdpi.com/2072-6643/14/19/4071 https://doaj.org/toc/2072-6643 doi:10.3390/nu14194071 2072-6643 https://doaj.org/article/41c51e2a98b347d1a447d087160f2f69 Nutrients, Vol 14, Iss 4071, p 4071 (2022) Arctic culture genetics Inuit Sámi Samoyed Nutrition. Foods and food supply TX341-641 article 2022 ftdoajarticles https://doi.org/10.3390/nu14194071 2022-12-30T20:21:29Z Vitamin D metabolism differs among human populations because our species has adapted to different natural and cultural environments. Two environments are particularly difficult for the production of vitamin D by the skin: the Arctic, where the skin receives little solar UVB over the year; and the Tropics, where the skin is highly melanized and blocks UVB. In both cases, natural selection has favored the survival of those individuals who use vitamin D more efficiently or have some kind of workaround that ensures sufficient uptake of calcium and other essential minerals from food passing through the intestines. Vitamin D scarcity has either cultural or genetic solutions. Cultural solutions include consumption of meat in a raw or boiled state and extended breastfeeding of children. Genetic solutions include higher uptake of calcium from the intestines, higher rate of conversion of vitamin D to its most active form, stronger binding of vitamin D to carrier proteins in the bloodstream, and greater use of alternative metabolic pathways for calcium uptake. Because their bodies use vitamin D more sparingly, indigenous Arctic and Tropical peoples can be misdiagnosed with vitamin D deficiency and wrongly prescribed dietary supplements that may push their vitamin D level over the threshold of toxicity. Article in Journal/Newspaper Arctic inuit samoyed* Directory of Open Access Journals: DOAJ Articles Arctic Nutrients 14 19 4071 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Arctic culture genetics Inuit Sámi Samoyed Nutrition. Foods and food supply TX341-641 |
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Arctic culture genetics Inuit Sámi Samoyed Nutrition. Foods and food supply TX341-641 Peter Frost The Problem of Vitamin D Scarcity: Cultural and Genetic Solutions by Indigenous Arctic and Tropical Peoples |
topic_facet |
Arctic culture genetics Inuit Sámi Samoyed Nutrition. Foods and food supply TX341-641 |
description |
Vitamin D metabolism differs among human populations because our species has adapted to different natural and cultural environments. Two environments are particularly difficult for the production of vitamin D by the skin: the Arctic, where the skin receives little solar UVB over the year; and the Tropics, where the skin is highly melanized and blocks UVB. In both cases, natural selection has favored the survival of those individuals who use vitamin D more efficiently or have some kind of workaround that ensures sufficient uptake of calcium and other essential minerals from food passing through the intestines. Vitamin D scarcity has either cultural or genetic solutions. Cultural solutions include consumption of meat in a raw or boiled state and extended breastfeeding of children. Genetic solutions include higher uptake of calcium from the intestines, higher rate of conversion of vitamin D to its most active form, stronger binding of vitamin D to carrier proteins in the bloodstream, and greater use of alternative metabolic pathways for calcium uptake. Because their bodies use vitamin D more sparingly, indigenous Arctic and Tropical peoples can be misdiagnosed with vitamin D deficiency and wrongly prescribed dietary supplements that may push their vitamin D level over the threshold of toxicity. |
format |
Article in Journal/Newspaper |
author |
Peter Frost |
author_facet |
Peter Frost |
author_sort |
Peter Frost |
title |
The Problem of Vitamin D Scarcity: Cultural and Genetic Solutions by Indigenous Arctic and Tropical Peoples |
title_short |
The Problem of Vitamin D Scarcity: Cultural and Genetic Solutions by Indigenous Arctic and Tropical Peoples |
title_full |
The Problem of Vitamin D Scarcity: Cultural and Genetic Solutions by Indigenous Arctic and Tropical Peoples |
title_fullStr |
The Problem of Vitamin D Scarcity: Cultural and Genetic Solutions by Indigenous Arctic and Tropical Peoples |
title_full_unstemmed |
The Problem of Vitamin D Scarcity: Cultural and Genetic Solutions by Indigenous Arctic and Tropical Peoples |
title_sort |
problem of vitamin d scarcity: cultural and genetic solutions by indigenous arctic and tropical peoples |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/nu14194071 https://doaj.org/article/41c51e2a98b347d1a447d087160f2f69 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic inuit samoyed* |
genre_facet |
Arctic inuit samoyed* |
op_source |
Nutrients, Vol 14, Iss 4071, p 4071 (2022) |
op_relation |
https://www.mdpi.com/2072-6643/14/19/4071 https://doaj.org/toc/2072-6643 doi:10.3390/nu14194071 2072-6643 https://doaj.org/article/41c51e2a98b347d1a447d087160f2f69 |
op_doi |
https://doi.org/10.3390/nu14194071 |
container_title |
Nutrients |
container_volume |
14 |
container_issue |
19 |
container_start_page |
4071 |
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1766319322783809536 |