RESPONSE OF SERUM 25-HYDROXYVITAMIN D TO INCIDENTAL UV LIGHT EXPOSURE

该子项目是利用该技术的众多研究子项目之一 资源由 NIH/NCRR 资助的中心拨款提供。子项目及 研究者 (PI) 可能已从 NIH 的另一个来源获得主要资金， 因此可以在其他 CRISP 条目中表示。列出的机构是 对于中心来说，它不一定是研究者的机构。 这项研究正在研究血液中维生素 D 水平因人们每天暴露在阳光下而发生的变化。 我们知道，来自太阳的紫外线会刺激身体产生活性形式的维生素 D，维生素 D 可以发挥我们健康所必需的多种功能。众所周知，暴露在阳光下与某些类型皮肤癌的发生直接相关。 尽管某些食物和膳食补充剂中含有维生素 D，但有人认为，阳光产生的维生素 D 对于维持我们体内的健康水平至关重要。 之前没有研究测量我们的身体因测量到的太阳紫外线量而产生的维生素 D 的量。 迄今为止，只有估计的阳光量被认为是获取特定量维生素 D 所必需的。这项研究将提供的数据可以更准确地证明每天暴露在阳光下，体内会产生多少维生素 D。 那么，也许可以建议尽量减少阳光照射，以充分增加维生素 D 的水平，同时避免过多的阳光照射时间，从而增加患皮肤癌的风险。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. This research is studying the change in the level of vitamin D in the blood in response to peoples daily exposure to sunlight. Ultraviolet rays from the sun are known to stimulate the body to produce the active form of vitamin D which serves many functions necessary to our health. It is also known that exposure to sunlight is directly related to the development of certain types of skin cancer. Although vitamin D can be found in certain foods and dietary supplements, it has been argued that the vitamin D produced by sunlight is essential to maintaining healthy levels in our bodies. There are no previous studies measuring the amount of vitamin D that is produced by our bodies in response to a measured quantity of ultraviolet light from the sun. To date, there are only estimated amounts of sunlight that are considered necessary to obtaining specific amounts of vitamin D. This study will provide data that can more accurately demonstrate how much vitamin D is produced in the body in response to everyday exposure to the sun. It may then be possible to recommend minimal exposure to sunlight that adequately increases levels of vitamin D while avoiding excessive exposure times that increase the risk of skin cancer.