Evidence map›Paper›PMID 29026938›Full record

SynthesisOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2017

Global dietary calcium intake among adults: a systematic review.

E M Balk, G P Adam, V N Langberg, A Earley, P Clark, P R Ebeling, A Mithal, R Rizzoli, C A F Zerbini, D D Pierroz and 2 more

Erratum issuedOpen access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 176 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
176citing papers in PubMed, 7 pooled it
24.7field-weighted citation impact, top 1% 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

176 citing papers in PubMed, 7 syntheses or guidelines pooled it, 376 citations in OpenAlex.

  1. Calcium supplementation for people with overweight or obesity.The Cochrane database of systematic reviews · 2024
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  11. No effect of maternal calcium intake and bone resorption during pregnancy on offspring bone mineral density at age 5 years.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2022
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116 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 7 institutions in 6 countries.

E M BalkCenter for Evidence Synthesis in Health, Brown University School of Public Health, Providence, RI, USA. ethan_balk@brown.edu.
G P AdamCenter for Evidence Synthesis in Health, Brown University School of Public Health, Providence, RI, USA.
V N LangbergCenter for Evidence Synthesis in Health, Brown University School of Public Health, Providence, RI, USA.
A EarleyEvidera, 500 Totten Pond Rd, Waltham, MA, USA.
P ClarkHospital Infantil de México Federico Gómez, Mexico City, Mexico.
P R EbelingSchool of Clinical Sciences, Monash University, Clayton, Australia.
A MithalMedanta Medicity, Sector 38, Gurgaon, India.
R RizzoliDivision of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
C A F ZerbiniCentro Paulista de Investigação Clínica, Sao Paulo, Brazil.
D D PierrozInternational Osteoporosis Foundation, Nyon, Switzerland.
B Dawson-HughesJean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA.
International Osteoporosis Foundation Calcium Steering Committee
Brown University · USCentro Paulista de Investigação Clinica · BRHospital Infantil de México Federico Gómez · MXJean Mayer Human Nutrition Research Center on Aging · USMedanta The Medicity · INMonash University · AUUniversity Hospital of Geneva · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Low calcium intake may adversely affect bone health in adults. Recognizing the presence of low calcium intake is necessary to develop national strategies to optimize intake. To highlight regions where calcium intake should be improved, we systematically searched for the most representative national dietary calcium intake data in adults from the general population in all countries. We searched 13 electronic databases and requested data from domain experts. Studies were double-screened for eligibility. Data were extracted into a standard form. We developed an interactive global map, categorizing countries based on average calcium intake and summarized differences in intake based on sex, age, and socioeconomic status. Searches yielded 9780 abstracts. Across the 74 countries with data, average national dietary calcium intake ranges from 175 to 1233 mg/day. Many countries in Asia have average dietary calcium intake less than 500 mg/day. Countries in Africa and South America mostly have low calcium intake between about 400 and 700 mg/day. Only Northern European countries have national calcium intake greater than 1000 mg/day. Survey data for three quarters of available countries were not nationally representative. Average calcium intake is generally lower in women than men, but there are no clear patterns across countries regarding relative calcium intake by age, sex, or socioeconomic status. The global calcium map reveals that many countries have low average calcium intake. But recent, nationally representative data are mostly lacking. This review draws attention to regions where measures to increase calcium intake are likely to have skeletal benefits.

Indexed as

Age FactorsCalcium, DietaryDiet SurveysGlobal HealthHumansSex FactorsSocial ClassCalcium, DietaryBone healthDietary calcium intakeDietary surveysOsteoporosis

Identifiers

PMID29026938
PMCPMC5684325
OpenAlexW2764317679

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.