國家衛生研究院 NHRI:Item 3990099045/5557

NHRI > Institute of Population Health Sciences > MARK LAWRENCE WAHLQVIST(2008-2012) > Periodical Articles > Item 3990099045/5557

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/5557

Title:	Vitamin D decreases risk of breast cancer in premenopausal women of normal weight in subtropical Taiwan
Authors:	Lee, MS;Huang, YC;Wahlqvist, ML;Wu, TY;Chou, YC;Wu, MH;Yu, JC;Sun, CA
Contributors:	Division of Health Services and Preventive Medicine
Abstract:	Background: Evidence for an association between vitamin D status and breast cancer is now more convincing, but is uncertain in subtropical areas like Taiwan. This hospital-based case-control study examined the relationship of breast cancer with vitamin D intake and sunlight exposure. Methods: A total of 200 incident breast cancer cases in a Taipei hospital were matched with 200 controls by date of interview and menopausal status. Information on risk factors for breast cancer was collected in face-to-face interviews and assessed with reference to vitamin D intake (foods and nutrients) and sunlight exposure. Vitamin D intake was divided into quartiles, and threshold effect was evaluated by comparing Q2-Q4 with Q1. Results: After controlling for age, education, parity, hormone replacement therapy, body mass index (BMI), energy intake, menopausal status, and daily sunlight exposure, the risk of breast cancer in participants with a dietary vitamin D intake greater than 5 mu g per day was significantly lower (odds ratio [OR], 0.48; 95% confidence interval [CI], 0.24-0.97) than that of participants with an intake less than 2 mu g per day. In analysis stratified by menopausal status and BMI, both dietary vitamin D and total vitamin D intakes were associated with a protective effect among premenopausal women. There was a significant linear trend for breast cancer risk and dietary vitamin D intake in premenopausal women (P = 0.02). In participants with a BMI lower than 24 kg/m(2) (ie, normal weight), dietary vitamin D intake was inversely related to breast cancer risk (P for trend = 0.002), and a threshold effect was apparent (Q2-Q4 vs Q1: OR, 0.46; 95% CI, 0.23-0.90). Conclusions: Vitamin D had a protective effect against breast cancer in premenopausal women of normal weight in subtropical Taiwan, especially an intake greater than 5 mu g per day.
Date:	2011-03
Relation:	Journal of Epidemiology. 2011 Mar;21(2):87-94.
Link to:	http://dx.doi.org/10.2188/jea.JE20100088
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0917-5040&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000288350900002
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=79953070237
Appears in Collections:	[MARK LAWRENCE WAHLQVIST(2008-2012)] Periodical Articles

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