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Vitamin D3 from sunlight may improve the prognosis of breast-, colon- and prostate cancer (Norway).
Cancer Causes Control. 2004 Mar; 15(2):149-58.CC

Abstract

OBJECTIVE

To investigate whether prognosis of breast-, colon- and prostate cancer may be related to vitamin D(3), induced from solar ultra-violet (UV) radiation, through studies on geographical and seasonal variations in UV radiation.

METHODS

This study includes 115,096 cases of breast-, colon- or prostate cancer, diagnosed between 1964 and 1992. Among these, 45,667 deaths due to the cancer were registered. On the basis of a north-south gradient in solar UV radiation and geographical climatic differences, Norway was divided into eight residential regions. According to seasonal variations in UV radiation, four periods of diagnosis during the year were used. Case fatality according to residential region and to season of diagnosis was estimated using Cox regression. The effects of occupational sun exposure, childbearing pattern and educational level were also evaluated.

RESULTS

No geographic variation in case fatality was observed for the three cancer types studied. A significant variation in prognosis by season of diagnosis was observed. Diagnoses during summer and fall, the seasons with the highest level of vitamin D(3), revealed the lowest risk of cancer death.

CONCLUSION

The results suggest that a high level of vitamin D(3) at the time of diagnosis, and thus, during cancer treatment, may improve prognosis of the three cancer types studied.

Authors+Show Affiliations

The Cancer Registry of Norway, Institute of Population-based Cancer Research, Montebello, 0310 Oslo, Norway. trude.eid.robsahm@kreftregisteret.noNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15017127

Citation

Robsahm, Trude Eid, et al. "Vitamin D3 From Sunlight May Improve the Prognosis of Breast-, Colon- and Prostate Cancer (Norway)." Cancer Causes & Control : CCC, vol. 15, no. 2, 2004, pp. 149-58.
Robsahm TE, Tretli S, Dahlback A, et al. Vitamin D3 from sunlight may improve the prognosis of breast-, colon- and prostate cancer (Norway). Cancer Causes Control. 2004;15(2):149-58.
Robsahm, T. E., Tretli, S., Dahlback, A., & Moan, J. (2004). Vitamin D3 from sunlight may improve the prognosis of breast-, colon- and prostate cancer (Norway). Cancer Causes & Control : CCC, 15(2), 149-58.
Robsahm TE, et al. Vitamin D3 From Sunlight May Improve the Prognosis of Breast-, Colon- and Prostate Cancer (Norway). Cancer Causes Control. 2004;15(2):149-58. PubMed PMID: 15017127.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Vitamin D3 from sunlight may improve the prognosis of breast-, colon- and prostate cancer (Norway). AU - Robsahm,Trude Eid, AU - Tretli,Steinar, AU - Dahlback,Arne, AU - Moan,Johan, PY - 2004/3/16/pubmed PY - 2004/8/25/medline PY - 2004/3/16/entrez SP - 149 EP - 58 JF - Cancer causes & control : CCC JO - Cancer Causes Control VL - 15 IS - 2 N2 - OBJECTIVE: To investigate whether prognosis of breast-, colon- and prostate cancer may be related to vitamin D(3), induced from solar ultra-violet (UV) radiation, through studies on geographical and seasonal variations in UV radiation. METHODS: This study includes 115,096 cases of breast-, colon- or prostate cancer, diagnosed between 1964 and 1992. Among these, 45,667 deaths due to the cancer were registered. On the basis of a north-south gradient in solar UV radiation and geographical climatic differences, Norway was divided into eight residential regions. According to seasonal variations in UV radiation, four periods of diagnosis during the year were used. Case fatality according to residential region and to season of diagnosis was estimated using Cox regression. The effects of occupational sun exposure, childbearing pattern and educational level were also evaluated. RESULTS: No geographic variation in case fatality was observed for the three cancer types studied. A significant variation in prognosis by season of diagnosis was observed. Diagnoses during summer and fall, the seasons with the highest level of vitamin D(3), revealed the lowest risk of cancer death. CONCLUSION: The results suggest that a high level of vitamin D(3) at the time of diagnosis, and thus, during cancer treatment, may improve prognosis of the three cancer types studied. SN - 0957-5243 UR - https://www.unboundmedicine.com/medline/citation/15017127/Vitamin_D3_from_sunlight_may_improve_the_prognosis_of_breast__colon__and_prostate_cancer__Norway__ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=15017127.ui DB - PRIME DP - Unbound Medicine ER -