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Calcium Supplements and Risk of Cardiovascular Disease: A Meta-Analysis of Clinical Trials
Abstract
Background: Recent systematic reviews and meta-analyses of randomized, double-blind, placebo-controlled trials (double-blind, placebo-controlled RCTs) have reported controversial findings regarding the associations between calcium supplements on the risk of cardiovascular disease (CVD). This meta-analysis aimed to investigate the association between them. Methods: We searched PubMed, EMBASE, the Cochrane Library, and the bibliographies of relevant articles for double-blind, placebo-controlled RCTs in November, 2020. Relative risks (RRs) with 95% confidence intervals (CIs) for the risk of cardiovascular disease were calculated using a random effects model. The main outcomes were CVD, coronary heart disease (CHD), and cerebrovascular disease. Results: A total of 13 double-blind, placebo-controlled RCTs (14,692 participants in an intervention group and 14,243 participants in a control group) were included in the final analysis. Calcium supplements significantly increased the risk of CVD (RR 1.15, 95% CI 1.06–1.25, I2 = 0.0%, n = 14) and CHD (RR 1.16, 95% CI 1.05–1.28, I2 = 0.0%, n = 9) in double-blind, placebo-controlled RCTs, specifically in healthy postmenopausal women. In the subgroup meta-analysis, dietary calcium intake of 700–1000 mg per day or supplementary calcium intake of 1000 mg per day significantly increased the risk of CVD and CHD. Conclusions: The current meta-analysis found that calcium supplements increased a risk of CVD by about 15% in healthy postmenopausal women.
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“There is also some emerging evidence to suggest an association between calcium supplementation and an increased risk of cardiovascular disease [68].”
From Dietary Intake of Masters Athletes: A Systematic Review (2023) · cites this paper as [68]
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Assessing risk of bias in a randomized trial
Higgins, J. P., Savović, J., Page, M. J., Elbers, R. G., & Sterne, J. A. (2019) · Cochrane Handbook for Systematic Reviews of Interventions · doi:10.1002/9781119536604.ch8 · Cited by 1,765
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Cited by
Virani, S. S., Newby, L. K., Arnold, S. V., Bittner, V., Brewer, L. C., Demeter, S. H., Dixon, D. L., Fearon, W. F., Hess, B., Johnson, H. M., et al. (2023) · Circulation · doi:10.1161/cir.0000000000001168 · Cited by 1,598
Virani, S. S., Newby, L. K., Arnold, S. V., Bittner, V., Brewer, L. C., Demeter, S. H., Dixon, D. L., Fearon, W. F., Hess, B., Johnson, H. M., et al. (2023) · Journal of the American College of Cardiology · doi:10.1016/j.jacc.2023.04.003 · Cited by 596
Dietary Intake of Masters Athletes: A Systematic Review
Guo, S., Shaoni, G. L. L., Stuart-Smith, W. A., Davies, A. J., & Gifford, J. A. (2023) · Nutrients · doi:10.3390/nu15234973 · Cited by 21
Metadata
- Authors
- Myung, S.-K., Kim, H.-B., Lee, Y.-J., Choi, Y.-J., & Oh, S.-W.
- Venue
- Nutrients
- Publisher
- MDPI AG
- Published
- 2021-01-26
- Volume
- 13
- Issue
- 2
- Pages
- 368
- ISSN
- 2072-6643
- Cited by
- 76
- References
- 6
- Language
- en
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