Evidence map›Paper›PMID 23134889›Full record

ArticleThe American journal of clinical nutrition2012

Calcium intake is not associated with increased coronary artery calcification: the Framingham Study.

Elizabeth J Samelson, Sarah L Booth, Caroline S Fox, Katherine L Tucker, Thomas J Wang, Udo Hoffmann, L Adrienne Cupples, Christopher J O'Donnell, Douglas P Kiel

Open access · bronzeAbstract read
In one paragraph

Article in The American journal of clinical nutrition, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
8.1field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 84 citations in OpenAlex.

  1. Pooled it
  2. Supplements for bone health.Archives of endocrinology and metabolism · 2025
    Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. A review of the effect of diet on cardiovascular calcification.International journal of molecular sciences · 2015
    Review
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 1 country.

Elizabeth J SamelsonDepartment of Medicine, Harvard Medical School and Institute for Aging Research, Hebrew SeniorLife, Boston, MA, USA. samelson@hsl.harvard.edu
Sarah L Booth
Caroline S Fox
Katherine L Tucker
Thomas J Wang
Udo Hoffmann
L Adrienne Cupples
Christopher J O'Donnell
Douglas P Kiel
Harvard University Press · USNational Institutes of Health · USHarvard University · USNortheastern University · USTufts University · US

Funding

Genomic Epidemiology of Cardiovascular DiseaseZIAHL006002 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI O'DONNELL, CHRISTOPHER · 2009 to 2015
$8.0M
Framingham Heart Study/FoxZIAHL006094 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI FOX, CAROLINE · 2010 to 2015
$6.9M
Gene Expression for Functional Genomics in Human PopulationsZIAHL006175 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI O'DONNELL, CHRISTOPHER · 2013 to 2015
$2.2M
Functional Genetic Variation Underlying Cardiovascular Genomic EpidemiologyZIAHL006173 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI O'DONNELL, CHRISTOPHER · 2013 to 2015
$2.0M
Volumetric Bone Density and Vascular Calcification: The Framingham QCT StudyK01AR053118 · NIAMS · HEBREW REHABILITATION CENTER FOR AGED · PI SAMELSON, ELIZABETH J · 2007 to 2011
$481k
THE FRAMINGHAM HEART STUDY-N01HC25195-268025195-268025195N01HC025195 · HC · TRUSTEES OF BOSTON UNIVERSITY · PI WOLF, PHILIP A · 2002 to 2006
–
NHLBI NIH HHS N01-HC-25195NIAMS NIH HHS K01 AR053118NIA NIH HHS R01 AR/AG41398
6 · The paper itself

Abstract

backgroundAdequate calcium intake is known to protect the skeleton. However, studies that have reported adverse effects of calcium supplementation on vascular events have raised widespread concern.

objectiveWe assessed the association between calcium intake (from diet and supplements) and coronary artery calcification, which is a measure of atherosclerosis that predicts risk of ischemic heart disease independent of other risk factors.

designThis was an observational, prospective cohort study. Participants included 690 women and 588 men in the Framingham Offspring Study (mean age: 60 y; range: 36-83 y) who attended clinic visits and completed food-frequency questionnaires in 1998-2001 and underwent computed tomography scans 4 y later in 2002-2005.

resultsThe mean age-adjusted coronary artery-calcification Agatston score decreased with increasing total calcium intake, and the trend was not significant after adjustment for age, BMI, smoking, alcohol consumption, vitamin D-supplement use, energy intake, and, for women, menopause status and estrogen use. Multivariable-adjusted mean Agatston scores were 2.36, 2.52, 2.16, and 2.39 (P-trend = 0.74) with an increasing quartile of total calcium intake in women and 4.32, 4.39, 4.19, and 4.37 (P-trend = 0.94) in men, respectively. Results were similar for dietary calcium and calcium supplement use.

conclusionsOur study does not support the hypothesis that high calcium intake increases coronary artery calcification, which is an important measure of atherosclerosis burden. The evidence is not sufficient to modify current recommendations for calcium intake to protect skeletal health with respect to vascular calcification risk.

Indexed as

AdultAgedAged, 80 and overAtherosclerosisCalcinosisCalcium, DietaryCohort StudiesCoronary Artery DiseaseCoronary VesselsDietary SupplementsFemaleFollow-Up StudiesHumansMaleMiddle AgedProspective StudiesCalcium, Dietary

Identifiers

PMID23134889
PMCPMC3497924
OpenAlexW2133784761

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.