4.4 Article

Making the sunshine vitamin - How much sun exposure is needed to maintain 25-hydroxy vitamin D concentration?

期刊

PHOTOCHEMISTRY AND PHOTOBIOLOGY
卷 -, 期 -, 页码 -

出版社

WILEY
DOI: 10.1111/php.13854

关键词

25-hydroxyvitamin D; microsimulation model; standard vitamin D dose; sun exposure

向作者/读者索取更多资源

Our goal was to calculate the time required to maintain existing 25-hydroxyvitamin D (25(OH)D) concentration in different locations in Australia and New Zealand. Using a microsimulation model, we estimated monthly changes in 25(OH)D concentration based on data on standard erythemal dose, solar zenith angle, and climatological ozone. We found that 5-10 minutes of outdoor activity between 8 a.m. and 4 p.m., with 35% of the body surface area exposed, is sufficient to maintain existing 25(OH)D concentration in summer, while in winter, more time outdoors during the middle of the day is required, with 10% of the body surface area exposed.
Our objective was to calculate the time in the sun necessary to maintain existing 25-hydroxyvitamin D (25(OH)D) concentration at locations across Australia and New Zealand. We used a microsimulation model to estimate changes in monthly 25(OH)D concentration using data on standard erythemal dose, solar zenith angle, and climatological ozone. We estimated the number of standard vitamin D doses per 10-min interval and used a dose-response equation to determine the average time in the sun to maintain existing 25(OH)D concentration according to month and time of day. Across all locations in summer, 5-10 min outdoors between 8 a.m. and 4 p.m. on most days of the week, with 35% of the body surface area exposed, is sufficient to maintain existing 25(OH)D concentration. In winter, at mid-to-high latitudes, time outdoors during the middle of the day is required. In winter, with 10% of the body surface area exposed, greater than 45 min in the middle of the day is required in most locations to maintain existing 25(OH)D concentration. These data can be used to inform guidelines regarding maintaining vitamin D via sun exposure and may help health practitioners identify patients who may be vitamin D deficient.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据