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维持维生素D水平充足所需的全球估计的UVB暴露时间
1Department of Earth and Environmental Sciences, University of Manchester, Manchester M13 9PL, UK.
Nutrients
|May 25, 2024
概括
维生素D缺乏在全球范围内很常见. 这项研究提供了基于度,月份和皮肤类型的维生素D合成所需的阳光照射时间,有助于提供个性化的营养建议.
科学领域:
- 营养科学 营养科学
- 皮肤病学 皮肤病学
- 公共卫生 公共卫生
背景情况:
- 维生素D缺乏是一个全球性的健康问题,不仅影响肌肉骨健康.
- 维生素D是通过饮食或通过阳光照射 (紫外线辐射) 通过皮肤合成获得的.
- 了解当地的阳光潜力对于通过食物或补充剂评估维生素D需求至关重要.
研究的目的:
- 为维持维生素D状态提供指示性的阳光照射时间.
- 通过考虑影响维生素D合成的局部因素来个性化营养建议.
- 为了确定需要或可以通过阳光照射补充维生素D摄入的人口和地区.
主要方法:
- 计算出用于维生素D合成的指示性阳光照射时间.
- 考虑的因素包括度,月份,皮肤类型和天空条件 (晴朗与全天).
- 假设一个穿着适度服装 (子/短和T恤) 的健行个体.
主要成果:
- 在±40度以上的度,有限的阳光限制了所有皮肤类型在某些月份的维生素D合成.
- 在赤道附近,中午阳光照射时间从3分钟 (白皮肤) 到15分钟 (黑皮肤) 之间,以获得足够的维生素D合成.
- 数据说明皮肤维生素D合成潜力的区域和个体差异.
结论:
- 这些发现强调了在阳光不足的地区口服维生素D摄入的必要性.
- 对维生素D补充剂或阳光照射的个性化建议是必不可少的,特别是在多元文化的人群中.
- 这些数据支持针对维生素D缺乏症的公共卫生战略.
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