Here’s some studies about prostate cancer and sun exposure:
Association of Cumulative Ultraviolet Radiation Exposure with Prostate Cancer Risk in a Case-Control Study of African-American Men (2012)
Conclusion: “This study demonstrated that outdoor and recreation UV exposures were significantly higher in controls when compared to cases. Furthermore, a trend for reduced prostate cancer risk was found among men with early life high sun exposure during childhood ages 0-5 years and 6-11 years.”
Is Prevention of Cancer by Sun Exposure More Than Just the Effect of Vitamin D? A Systematic Review of Epidemiological Studies (2012)
Conclusion: Meta-analysis looked at nine different studies investigating sun exposure and prostate cancer risk/survival. Of those nine studies, all but one demonstrated a negative association between sun exposure and prostate cancer risk – guys who get more sun have less prostate cancer.
Conclusion: Study from Australia looked at prostate cancer incidence rates in 70 different regions for a ten-year period and found guys who live in the sunnier areas have less prostate cancer.
Decreased Risk of Prostate Cancer After Skin Cancer Diagnosis: A Protective Role of Ultraviolet Radiation? (2007)
Conclusion: Netherlands study examined prostate cancer rates among 13,541 various skin cancer patients and the general population. Study found that the skin cancer patients were at a decreased risk for developing prostate cancer and advanced prostate cancer.
Sun Exposure and Prostate Cancer Risk: Evidence for a Protective Effect of Early-Life Exposure (2007)
Conclusion: American study looked at lifetime sun exposure habits of 161 white prostate cancer patients and 3,367 controls and found that guys who were born in sunnier areas had a 51% lower prostate cancer risk and the guys who reported more recreational sun exposure in adulthood enjoy a 53% lower risk for fatal prostate cancer.
International Comparisons of Prostate Cancer Mortality Rates with Dietary Practices and Sunlight Levels (2006)
Conclusion: UV index, dietary habits, and prostate cancer rates were evaluated in *71* countries and researchers found that the sunnier regions have lower prostate cancer rates.
Conclusion: Study evaluated 450 prostate cancer patients and 455 controls. Scientists evaluated sun exposure levels of the patients by using white guys. Using a reflectometer device they measured the skin pigment differences between their upper arms (typically sun-protected) and their foreheads (typically unprotected) to roughly determine how much time the guys spend outside. What they found was that guys who get the most sun exposure (e.g. outdoor workers) enjoy a 51% lower risk for advanced prostate cancer.
Associations Between Prostate Cancer Susceptibility and Parameters of Exposure to Ultraviolet Radiation (2003)
Conclusion: “This finding suggests regular short-term exposure allows adequate synthesis of vitamin D and reduced cancer risk. We found adult sunbathing to be particularly important. This may reflect the large surface area of generally less pigmented skin that is exposed. Indeed, exposure of the trunk and legs results in greater increases in serum vitamin D levels than exposure of the head and neck.”
Exposure to Ultraviolet Radiation: Association with Susceptibility and Age At Presentation with Prostate Cancer (2001)
Conclusion: Case-control study found that guys who reported suffering frequent childhood sunburns have a lower risk for prostate cancer.
Conclusion: Scientists examined prostate cancer rates in over 3,000 counties across the U.S. and found that the sunnier areas have fewer prostate cancer cases.
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