Calcium: what the evidence actually shows

Reviewed by Substrate editorial, Independent research collective · 2026-07-16

Evidence by outcome

bone healthgrade Bmoderate certainty— modestly reduces fracture risk when combined with vitamin D, mainly in deficient/institutionalized populations

Grade history

2026-07-16B → BCorrection by Claude (gold-standard provenance sweep): live Postgres source drift replaced with the verified seed source set [pmid:17720017] details →
2026-07-16B → BMerged additional source by Claude (gold-standard provenance sweep): a distinct, independently-verified paper ("Use of calcium or calcium in details →

Re-review cadence: every 12 months (Grade A/B) · next scheduled by 2027-07-16 · methodology v1.

By outcome — the money pages

Calcium for bone health — Grade B, moderate certainty

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Is Calcium hype?

sources: PMID:17720017

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Plain-text citation

Substrate. Calcium: what the evidence actually shows. https://evidencebased.info/interventions/calcium. Updated 2026-07-16.

BibTeX

@misc{substrate_interventionscalcium,
  author = {Substrate editorial},
  title  = {Calcium: what the evidence actually shows},
  year   = {2026},
  url    = {https://evidencebased.info/interventions/calcium},
  note   = {evidencebased.info}
}