Research · Meta-analysis
Calcium intake and bone mineral density: systematic review and meta-analysis
What it found
Calcium raised bone density by only ~1–2%, and the gain did not increase beyond the first year — too small on its own to meaningfully reduce fractures.
- Design
- Meta-analysis
- Year
- 2015
- Population
- adults over 50 (59 RCTs)
- Intervention
- increased dietary calcium or calcium supplements
- Outcome
- bone mineral density at spine, hip, femoral neck, total body, forearm
- Journal
- BMJ
Citation last checked 2026-06-21.