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Published on: January 29, 2018
Mammographic density and serum 25-hydroxyvitamin D levels
Katherine D Crew1, Julie Campbell2, Diane Reynolds3
1Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, NY, USA ; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA ; The Herbert Irving Comprehensive Cancer Center, Columbia University, 161 Fort Washington Ave, 10-1072, New York, NY 10032, USA.
This study found no overall association between vitamin D levels and mammographic density in women. However, a seasonal inverse relationship was observed, suggesting further research is needed for vitamin D and breast cancer risk factors.
Area of Science:
- Oncology
- Endocrinology
- Radiology
Background:
- Vitamin D influences breast tissue characteristics and is linked to breast cancer risk.
- Dietary vitamin D intake correlates with reduced mammographic density (MD), a key breast cancer risk indicator.
Purpose of the Study:
- To investigate the association between serum 25-hydroxyvitamin D [25(OH)D] and mammographic density (MD).
- To explore vitamin D status as a potential breast cancer risk factor in a multi-ethnic cohort.
Main Methods:
- Recruited 114 women aged 40-60 without prior breast cancer for screening mammography.
- Collected blood samples for serum 25(OH)D measurement and digitized mammograms to assess MD.
- Utilized multivariable analysis, adjusting for confounders like BMI and race.
Main Results:
- No significant association was found between overall serum 25(OH)D levels and MD measures.
- A significant inverse association between 25(OH)D and dense breast area was observed during July-December.
- Higher 25(OH)D levels were associated with white race, higher education, breastfeeding, and summer blood draws.
Conclusions:
- Circulating vitamin D, a modifiable risk factor, does not appear to be associated with mammographic density overall.
- Observed seasonal effects on the vitamin D-MD relationship warrant replication in larger studies.
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