Association Between Dietary/Supplementary Calcium Intake and Risk of Breast Cancer: A Systematic Review and Meta-Analysis of Cohort Studies
= 35%). In subgroup analyses, inverse associations were observed in both premenopausal and postmenopausal women, across shorter and longer follow-up periods, and in European and American cohorts. Dietary calcium intake, alone or combined with supplements, was associated with a reduced risk, whereas supplemental calcium alone was not. These findings suggest that higher calcium intake, particularly from dietary sources, may modestly reduce breast cancer risk. Further research is needed to confirm causality and clarify mechanisms.
Authors
- Omid Asbaghi (ORCID: https://orcid.org/0000-0002-7740-4711)
- Mina Ahmadzadeh
- Reyhaneh Rabiee (ORCID: https://orcid.org/0009-0007-9292-8306)
- Mahdi Amirpour
- Mehdi Karimi
- Nahal Babaeian Amini (ORCID: https://orcid.org/0009-0001-7262-2525)
- Fereshteh Valizadeh (ORCID: https://orcid.org/0000-0002-1609-9493)
- Bagher Larijani (ORCID: https://orcid.org/0000-0001-5386-7597)
- Sayed Hosein Davoodi (ORCID: https://orcid.org/0000-0002-6404-8367)
Institutions
- Shahid Sadoughi University of Medical Sciences and Health Services (IR)
- National Nutrition and Food Technology Research Institute (IR)
- Shahid Beheshti University of Medical Sciences (IR)
- Tehran University of Medical Sciences (IR)
- Bogomolets National Medical University (UA)
Publication Details
- Journal
- Nutrition and Cancer
- Published
- 2026-05-16
- DOI
- https://doi.org/10.1080/01635581.2026.2668741
- Primary Topic
- Vitamin D Research Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00