Health studies about vitamin D and prostate cancer:
Serum Vitamin D Profile In Black African Men with Prostate Cancer at Tertiary Referral Facility in Sub-Saharan Africa (2014)
Conclusion: The vitamin D blood levels of 162 black African prostate cancer patients were analyzed. 88.9% of them were vitamin D-deficient.
Conclusion: 13-year study of 16,535 prostate cancer patients found that those with higher vitamin D levels had improved survival outcomes.
Is Prevention of Cancer by Sun Exposure More Than Just the Effect of Vitamin D? A Systematic Review of Epidemiological Studies (2013)
Conclusion: “We found that almost all epidemiological studies suggest that chronic (not intermittent) sun exposure is associated with a reduced risk of colorectal-, breast-, prostate cancer and NHL.”
Conclusion: There is an increased rate of prostate cancer incidences in areas of Australia that receive less solar radiation compared to areas that receive more solar radiation.
Serum 25 OH Vitamin D Concentrations and Calcium Intake are Low in Patients with Prostate Cancer (2011)
Conclusion A study of 91 prostate cancer patients found that 78% had low vitamin D levels.
Exposure to Ultraviolet Radiation: Association with Susceptibility and Age at Presentation with Prostate Cancer (2011)
Conclusion: “A positive association between latitude and prostate cancer mortality has been interpreted to indicate that ultraviolet radiation (UVR) protects against development of this cancer.”
Conclusion: Sun exposure and vitamin D prevent colon, breast, prostate, and ovarian cancer
Phytoestrogens and Vitamin D Metabolism: A New Concept for the Prevention and Therapy of Colorectal, Prostate, and Mammary Carcinomas. (2004)
Conclusion: Optimization of vitamin D levels is important for tumor prevention
Conclusion: 115,096 cases of breast, colon, and prostate cancer diagnosed over a 28-year period were observed. Researchers found that patients diagnosed in the summer and fall, when population vitamin D levels are highest, had the lowest cancer fatality rate. “The results suggest that a high level of vitamin D3 at the time of diagnosis, and thus, during cancer treatment, may improve prognosis of the three cancer types studied.” The study also found that men and women who received medium to high levels of occupational sun exposure had an extraordinarily lower cancer fatality rate compared to people with low occupational sun exposure.
Conclusion: Vitamin D causes prostate cancer cells to kill themselves (apoptosis), decreases their growth rate (proliferation), and hinders the cancer from spreading to other parts of the body (metastasis)
Sunlight and Mortality From Breast, Ovarian, Colon, Prostate, and Non-Melanoma Skin Cancer: A Composite Death Certificate Based Case-Control Study (2002)
Conclusion: Sun exposure lowers your risk of developing breast, ovarian, prostate, and colon cancer
An Estimate of Premature Cancer Mortality in the U.S. Due to Inadequate Doses of Solar Ultraviolet-B Radiation (2002)
Conclusion: Lack of midday sun exposure increases one’s risk for developing and dying from breast, colon, ovary, prostate, bladder, esophageal, kidney, lung, pancreatic, rectal, stomach, and uterine cancer.
Prostate Cancer Risk: Associations With Ultraviolet Radiation, Tyrosinase and Melanocortin-1 Receptor Genotypes (2001)
Conclusion: “Exposure to ultraviolet radiation may reduce prostate cancer risk”
Conclusion: Men with lower vitamin D levels have an increased risk of developing prostate cancer
Conclusion: Vitamin D3 “inhibits the invasiveness of human prostate cancer cells.”
Conclusion: Vitamin D inhibits the growth of prostate cancer cells
Geographic Patterns of Prostate Cancer Mortality. Evidence for a Protective Effect of Ultraviolet Radiation (1992)
Conclusion: There are lower prostate cancer mortality rates in the southern regions of America compared to the northern regions due to the south receiving stronger sunlight with more vitamin D-producing UVB radiation.