Exposure to ultraviolet radiation and the risk of cancer incidence: A secondary data analysis of the Canadian Partnership for Tomorrow Project (CPTP) cohort

Principal Investigator: Dr. Will King

Affiliation: Queen’s University

Start Year: 2019

It is established that sun exposure causes melanoma and non-melanoma skin cancers. In contrast, there is evidence that moderate levels of sun exposure may reduce the risk of other cancers through the production of vitamin D. However, there is also evidence that continuously high levels of sun exposure may increase the risk of some cancers, specifically cancers of the blood. The proposed study aims to use data provided from over 300,000 participants from the five Canadian Partnership for Tomorrow Project (CPTP) cohorts to measure the cancer risk associated with different levels of sun exposure.

Data from the cohorts were collected by questionnaires that include health and lifestyle behaviours, as well as sociodemographic characteristics. The primary objective of this study will be to combine questionnaire and cancer registry data to provide accurate risk estimates for different levels of sun exposure and specific types of cancer. Results from the study could provide clarity on the beneficial and detrimental amounts of sun exposure for site specific cancer development.