Journal
PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE
Volume 35, Issue 6, Pages 429-435Publisher
WILEY
DOI: 10.1111/phpp.12494
Keywords
skin cancer; sun protection; sunscreen; ultraviolet radiation; vitamin D
Categories
Funding
- Photomedicine Institute, VGH and UBC Hospital Foundation
- Canadian Dermatology Foundation
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Background Sun exposure is the most important environmental risk factor for causing skin cancer. Purpose This study examines the relationship between sun protection behaviours and modifiable lifestyle risk factors for other cancers as well as vitamin D levels. Methods Cross-sectional data were analysed from two large national health surveys (n = 31, 445 and n = 5604). Sun exposure and protection were characterized by the presence of sunburn, duration of sun exposure, frequency of seeking shade, frequency of wearing a hat and frequency of wearing sunscreen. Using Statistical Analysis System (SAS) software 9.3.1, multivariate logistic regression models were compiled. Results Unhealthy behaviour practices were associated with sunburns or infrequent sun protection behaviour, such as cigarette consumption (either current or former smokers), second-hand smoke exposure, not having a regular doctor, higher level of alcohol consumption, street drug usage and low levels of fruit/vegetable consumption. Approximately one-quarter of individuals had less than the recommended value of serum vitamin D levels (<50 nmol/L), despite 39.2% of these individuals reporting >= 1 hour of sun exposure. Conclusion Modifiable lifestyle risk factors for other cancers are correlated with infrequently practicing sun protection behaviours for skin cancer prevention. Therefore, cancer prevention campaigns can aim to target all these risk factors associated with different cancers. Sun exposure is not a reliable source to obtain recommended vitamin D levels and that other sources (eg. fish, egg yolk, fortified drinks and supplements) are a safer and more reliable option.
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