Higher vitamin D levels in Nigerian albinos compared with pigmented controls.

Higher vitamin D levels in Nigerian albinos compared with pigmented controls.

Enechukwu, Nkechi;Cockburn, Myles;Ogun, Gabriel;Ezejiofor, Ogochukwu I;George, Adekunle;Ogunbiyi, Adebola;
international journal of dermatology 2019
232
enechukwu2019higherinternational

Abstract

Several studies have suggested that the lower vitamin D levels in blacks is attributable to the effect of increased pigmentation in blocking cutaneous ultraviolet (UV)-mediated production of vitamin D. Albinos are devoid of melanin and should invariably have higher vitamin D levels when compared with their pigmented counterparts. However, strict photoprotection required in their medical management has been shown to reduce UV-dependent vitamin D production. Associations between low vitamin D and several diseases suggest that the pattern of vitamin D in the black African albino be investigated.To compare the vitamin D levels between albinos and normal pigmented controls in Anambra State, Nigeria, and thus highlight the impact of skin pigmentation and sun protection practices on vitamin D levels.This was a cross-sectional study of a consecutive series of albinos from the Albino Foundation, Anambra State. The vitamin D levels of 61 albinos and 58 matched pigmented controls were analyzed. The sun exposures of the participants were calculated using validated sun exposure questionnaires.The albinos had significantly higher vitamin D levels (median 95.9 [50.1-177.4] ng/ml) than the controls (78.2 [12.1-250] ng/ml). None of the albinos had low vitamin D levels. None of the sun protection practices had significant effects on vitamin D levels.This study contests the claim that black Africans including albinos have low vitamin D levels. Albinos living in South East Nigeria have significantly higher vitamin D levels than their pigmented counterparts.

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ID: 17410
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