Ethnic aspects of vitamin D deficiency
Vitamin D deficiency has been linked to bone fragility in children and adults, and to an increased risk of chronic diseases. The main sources of vitamin D are the diet and cutaneous synthesis, the latter being the most important one, since foods are relatively poor in vitamin D. The main factors influencing this endogenous production are the seasons, the time of day, latitude and skin phototype. Due to the contribution of sun exposure in maintaining vitamin D levels, it would be expected that this deficiency would be more prevalent in countries at a high latitude; it has been shown, however, that hypovitaminosis D is commonly found in tropical regions such as Brazil. In high latitude regions in which extreme skin phototypes have been compared, the prevalence of vitamin D deficiency is more common in people with originally darker skin who have a natural barrier to the already lower UV irradiation penetrating the skin. In Brazil, particularly in the areas where sun rays are more abundant, the difference in sunlight exposure between subjects showed no significant variation in serum 25-hydroxyvitamin D (25OHD).
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Sociedade Brasileira de Endocrinologia e Metabologia
2014
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oai:scielo:S0004-273020140005005402014-08-19Ethnic aspects of vitamin D deficiencyCorreia,AlineAzevedo,Maria do SocorroGondim,FernandoBandeira,Francisco Vitamin D deficiency sun index skin phototype 25OHD Vitamin D deficiency has been linked to bone fragility in children and adults, and to an increased risk of chronic diseases. The main sources of vitamin D are the diet and cutaneous synthesis, the latter being the most important one, since foods are relatively poor in vitamin D. The main factors influencing this endogenous production are the seasons, the time of day, latitude and skin phototype. Due to the contribution of sun exposure in maintaining vitamin D levels, it would be expected that this deficiency would be more prevalent in countries at a high latitude; it has been shown, however, that hypovitaminosis D is commonly found in tropical regions such as Brazil. In high latitude regions in which extreme skin phototypes have been compared, the prevalence of vitamin D deficiency is more common in people with originally darker skin who have a natural barrier to the already lower UV irradiation penetrating the skin. In Brazil, particularly in the areas where sun rays are more abundant, the difference in sunlight exposure between subjects showed no significant variation in serum 25-hydroxyvitamin D (25OHD). info:eu-repo/semantics/openAccessSociedade Brasileira de Endocrinologia e MetabologiaArquivos Brasileiros de Endocrinologia & Metabologia v.58 n.5 20142014-07-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27302014000500540en10.1590/0004-2730000003320 |
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Correia,Aline Azevedo,Maria do Socorro Gondim,Fernando Bandeira,Francisco |
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Correia,Aline Azevedo,Maria do Socorro Gondim,Fernando Bandeira,Francisco Ethnic aspects of vitamin D deficiency |
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Correia,Aline Azevedo,Maria do Socorro Gondim,Fernando Bandeira,Francisco |
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Correia,Aline |
title |
Ethnic aspects of vitamin D deficiency |
title_short |
Ethnic aspects of vitamin D deficiency |
title_full |
Ethnic aspects of vitamin D deficiency |
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Ethnic aspects of vitamin D deficiency |
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Ethnic aspects of vitamin D deficiency |
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ethnic aspects of vitamin d deficiency |
description |
Vitamin D deficiency has been linked to bone fragility in children and adults, and to an increased risk of chronic diseases. The main sources of vitamin D are the diet and cutaneous synthesis, the latter being the most important one, since foods are relatively poor in vitamin D. The main factors influencing this endogenous production are the seasons, the time of day, latitude and skin phototype. Due to the contribution of sun exposure in maintaining vitamin D levels, it would be expected that this deficiency would be more prevalent in countries at a high latitude; it has been shown, however, that hypovitaminosis D is commonly found in tropical regions such as Brazil. In high latitude regions in which extreme skin phototypes have been compared, the prevalence of vitamin D deficiency is more common in people with originally darker skin who have a natural barrier to the already lower UV irradiation penetrating the skin. In Brazil, particularly in the areas where sun rays are more abundant, the difference in sunlight exposure between subjects showed no significant variation in serum 25-hydroxyvitamin D (25OHD). |
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Sociedade Brasileira de Endocrinologia e Metabologia |
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2014 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27302014000500540 |
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AT correiaaline ethnicaspectsofvitaminddeficiency AT azevedomariadosocorro ethnicaspectsofvitaminddeficiency AT gondimfernando ethnicaspectsofvitaminddeficiency AT bandeirafrancisco ethnicaspectsofvitaminddeficiency |
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