Prospective Study of UV Exposure and Cancer Incidence Among Swedish Women

Yang, Ling; Veierød, Marit B.; Löf, Marie; Sandin, Sven; Adami, Hans Olov; Weiderpass, Elisabete

doi:10.1158/1055-9965.epi-11-0071

Cited by 32 publications

(27 citation statements)

References 51 publications

(112 reference statements)

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“…S. Engel et al, 2014; P. Engel, Fagherazzi, Mesrine, Boutron-Ruault, & Clavel-Chapelon, 2011; John, Schwartz, Dreon, & Koo, 1999; John, Schwartz, Koo, Wang, & Ingles, 2007; Yang et al, 2011) or no association (Edvardsen et al, 2011; Fuhrman et al, 2013; Kuper et al, 2009; Lin et al, 2012; Millen et al, 2009). UVR exposure has been estimated in prior studies using a variety of metrics, most commonly either ambient UVR or time outdoors.…”

Section: Introductionmentioning

confidence: 99%

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Prospective study of ultraviolet radiation exposure and risk of breast cancer in the United States

Zamoiski

Freedman

Linet

et al. 2016

Environmental Research

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Although there are few environmental risk factors for breast cancer, some epidemiologic studies found that exposure to solar UV radiation (UVR) may lower risk. Prior epidemiologic studies are limited by narrow ambient UVR ranges and lack lifetime exposure assessment. To address these issues, we studied a cohort with residences representing a wide range of ambient UVR. Using the nationwide U.S. Radiologic Technologists study (USRT), we examined the association between breast cancer risk and UVR based on ambient UVR, time outdoors, a combined variable of ambient UVR and time outdoors (combined UVR), and sun susceptibility factors. Participants reported location of residence and hours spent outdoors during five age periods. Ambient UVR was derived by linking satellite-based annual UVR estimates to self-reported residences. Lifetime values were calculated by averaging these measures accounting for years spent in that location. We examined the risk of breast cancer among 36,725 participants (n= 716 cases) from baseline questionnaire completion (2003–2005) through 2012–2013 using Cox proportional hazards models. Breast cancer risk was unrelated to ambient UVR (HR for lifetime 5th vs 1st quintile = 1.22, 95% CI: 0.95–1.56, p-trend=0.36), time outdoors (HR for lifetime 5th vs 1st quintile = 0.87, 95% confidence interval (CI): 0.68–1.10, p-trend=0.46), or combined UVR (HR lifetime 5th vs 1st quintile = 0.85, 95% CI: 0.67–1.08, p-trend=0.46). Breast cancer risk was not associated with skin complexion, eye or hair color, or sunburn history. This study does not support the hypothesis that UVR exposure lowers breast cancer risk.

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Section: Introductionmentioning

confidence: 99%

“…Many studies reporting an association between UVR and breast cancer have used time outdoors as the metric of UVR exposure,(L. S. Engel et al, 2014; John et al, 1999; Millen et al, 2009; Yang et al, 2011)and some evaluated ambient UVR exposure (Anderson et al, 2011; P. Engel et al, 2011; John et al, 1999; Millen et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Prospective study of ultraviolet radiation exposure and risk of breast cancer in the United States

Zamoiski

Freedman

Linet

et al. 2016

Environmental Research

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“…In a review, Grant has reported weaker evidence between ultraviolet B -vitamin D and brain tumor from ecological studies (Grant, 2012). Unlike these studies mentioned above, Yang et al (2011) had found no association between sun exposure, solarium use, or vitamin D intake, and brain cancer risk.…”

Section: Discussionmentioning

confidence: 65%

Lack of Sunlight Exposure Influence on Primary Glioblastoma Survival

Mutlu

Akca²,

Erden³

et al. 2014

Asian Pacific Journal of Cancer Prevention

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Background: The prognosis of primary glioblastoma (GBM) is poor. Approximately 2/3 of primary brain tumor diagnoses are GBM, of which 95% are primary lesions. In this study, we aimed to evaluate whether more sunlight exposure has an effect on survival of patients with primary GBM. Materials and Methods: A total of 111 patients with primary GBM were enrolled from Kayseri in inner Anatolia which has a cold climate (n: 40) and Mersin in Mediterranean region with a warm climate and more sunlight exposure (n: 71). The patients with primary GBM were divided into two groups as Kayseri and Mersin and compared for progression free survival (PFS) and overall survival (OS).Results: The PFS values were 7.0 and 4.7 months for Kayseri and Mersin groups, respectively (p=0.10) and the repsective OS values were 13.3 and 9.4 months (p=0.13). We did not found any significant difference regarding age, sex, comorbidity, smoking, surgery, resurgery, adjuvant chemoradiotherapy and palliative chemotherapy between the groups. Conclusions: We found that more sunlight exposure had no impact on prognosis of patients with primary GBM, adding inconsistency to the literature about the relationship between sunlight and GBM.

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“…Given that serum 25(OH)D levels can vary with vitamin D intake, season, sun exposure and a number of other factors (4,41) , it is probably not reasonable to use a single serum measure of vitamin D as a surrogate for adult lifetime sun exposure. Thus, a true validation of reported lifetime sun exposures that might influence chronic disease risk (42,43) continues to be a challenge. Based on the dietary and supplement intakes only, our results suggests that between 51?7 % and 83?3 % of women (depending on age group) met adequate vitamin D intakes that were in place in Canada when the study was conducted (35) .…”

Section: Discussionmentioning

confidence: 99%

Reliability of self-reported sun exposure in Canadian women and estimation of lifetime exposure to vitamin D from sun and diet

Cook

Moon

Dong

et al. 2013

Public Health Nutr.

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Objective: To assess the inter-method reliability of the Ovarian Cancer in Alberta (OVAL) survey developed to estimate adult vitamin D exposure from sun and diet for every tenth year, against the longer Geraldton Skin Cancer Prevention Survey (the assumed 'gold standard'). We also estimated total vitamin D exposure using the OVAL survey. Design: A randomized crossover design to assess the inter-method reliability of sun exposure (OVAL v. Geraldton survey), using intra-class correlation and estimated total vitamin D exposure from sun and diet. Setting: Calgary, Alberta, Canada. Subjects: Randomly selected women (n 90) aged 40-79 years. Results: The average lifetime sun exposure of 13 913 h (average 411 h/year) from the Geraldton survey was not significantly different from the 13 034 h (average 385 h/year) from the OVAL survey for periods with sufficient UV radiation to stimulate vitamin D production. The intra-class correlation coefficient for average lifetime sun exposure was 0?77 (95 % CI 0?69, 0?86); the annual average was 0?60 (95 % CI 0?47, 0?74). Estimated vitamin D from diet and supplements increased with age. Conclusions: Our OVAL survey reliably estimated adult sun exposure relative to the Geraldton survey, suggesting that assessing sun exposure every tenth year is a reliable and efficient method for estimating sun contributions to lifetime vitamin D exposure.

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Prospective Study of UV Exposure and Cancer Incidence Among Swedish Women

Cited by 32 publications

References 51 publications

Prospective study of ultraviolet radiation exposure and risk of breast cancer in the United States

Prospective study of ultraviolet radiation exposure and risk of breast cancer in the United States

Lack of Sunlight Exposure Influence on Primary Glioblastoma Survival

Reliability of self-reported sun exposure in Canadian women and estimation of lifetime exposure to vitamin D from sun and diet

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