Queensland University of Technology, Queensland, Australia.
Cancer Epidemiol Biomarkers Prev. 2010 Jul;19(7):1784-9. doi: 10.1158/1055-9965.EPI-10-0127. Epub 2010 Jun 22.
Sun exposure is the main source of vitamin D. Increasing scientific and media attention to the potential health benefits of sun exposure may lead to changes in sun exposure behaviors.
To provide data that might help frame public health messages, we conducted an online survey among office workers in Brisbane, Australia, to determine knowledge and attitudes about vitamin D and associations of these with sun protection practices. Of the 4,709 people invited to participate, 2,867 (61%) completed the questionnaire. This analysis included 1,971 (69%) participants who indicated that they had heard about vitamin D.
Lack of knowledge about vitamin D was apparent. Eighteen percent of people were unaware of the bone benefits of vitamin D but 40% listed currently unconfirmed benefits. Over half of the participants indicated that more than 10 minutes in the sun was needed to attain enough vitamin D in summer, and 28% indicated more than 20 minutes in winter. This was significantly associated with increased time outdoors and decreased sunscreen use. People believing sun protection might cause vitamin D deficiency (11%) were less likely to be frequent sunscreen users (summer odds ratio, 0.63; 95% confidence interval, 0.52-0.75).
Our findings suggest that there is some confusion about sun exposure and vitamin D, and that this may result in reduced sun-protective behavior.
More information is needed about vitamin D production in the skin. In the interim, education campaigns need to specifically address the vitamin D issue to ensure that skin cancer incidence does not increase.
阳光照射是维生素 D 的主要来源。人们对阳光照射潜在健康益处的关注度不断提高，这可能会导致阳光照射行为发生变化。
为了提供有助于制定公共卫生信息的相关数据，我们在澳大利亚布里斯班的上班族中进行了一项在线调查，以确定他们对维生素 D 的了解和态度，以及这些因素与防晒行为之间的关联。在受邀参与调查的 4709 人中，有 2867 人（61%）完成了问卷。本分析纳入了 1971 名（69%）表示听说过维生素 D 的参与者。
缺乏对维生素 D 的了解较为明显。18%的人不知道维生素 D 对骨骼有益，但 40%的人列出了目前尚未证实的益处。超过一半的参与者表示，在夏季需要晒太阳超过 10 分钟才能获得足够的维生素 D，28%的人表示在冬季需要晒太阳超过 20 分钟。这与户外活动时间增加和防晒霜使用减少显著相关。认为防晒可能导致维生素 D 缺乏（11%）的人不太可能经常使用防晒霜（夏季的优势比为 0.63；95%置信区间为 0.52-0.75）。
我们的研究结果表明，人们对阳光照射和维生素 D 存在一些混淆，这可能导致防晒行为减少。
需要更多关于皮肤中维生素 D 产生的信息。在此期间，教育活动需要特别解决维生素 D 问题，以确保皮肤癌发病率不会增加。
