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- Title
Protection from Sunburn with β-Carotene—A Meta-analysis.
- Authors
Wolfgang Köpcke; Krutmann, Jean
- Abstract
Nutritional protection against skin damage from sunlight is increasingly advocated to the general public, but its effectiveness is controversial. In this meta-analysis, we have systematically reviewed the existing literature on human supplementation studies on dietary protection against sunburn by beta-carotene. A review of literature until June 2007 was performed in PubMed, ISI Web of Science and EBM Cochrane library and identified a total of seven studies which evaluated the effectiveness of β-carotene in protection against sunburn. Data were abstracted from these studies by means of a standardized data collection protocol. The subsequent meta-analysis showed that (1) β-carotene supplementation protects against sunburn and (2) the study duration had a significant influence on the effected size. Regression plot analysis revealed that protection required a minimum of 10 weeks of supplementation with a mean increase of the protective effect of 0.5 standard deviations with every additional month of supplementation. Thus, dietary supplementation of humans with β-carotene provides protection against sunburn in a time-dependent manner.
- Publication
Photochemistry & Photobiology, 2008, Vol 84, Issue 2, p284
- ISSN
0031-8655
- Publication type
Academic Journal
- DOI
10.1111/j.1751-1097.2007.00253.x