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Calcium Supplements and Risk of Cardiovascular Disease: A Meta-Analysis of Clinical Trials

Myung, Seung-Kwon, Kim, Hong-Bae, Lee, Yong-Jae, Choi, Yoon-Jung, Oh, Seung-Won·2021·Nutrients

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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  1. Compston, 2017, UK clinical guideline for the prevention and treatment of osteoporosis, Arch. Osteoporos., 12, 1, 10.1007/s11657-017-0324-5 · DOI · Paper page
  2. Lewis, 2015, The effects of calcium supplemen-tation on verified coronary heart disease hospitalization and death in postmenopausal women: A collaborative meta-analysis of randomized controlled trials, J. Bone Miner. Res., 30, 165, 10.1002/jbmr.2311 · DOI
  3. Nordin, 2011, The calcium scare—What would Austin Brad-ford Hill have thought?, Osteoporos. Int., 22, 3073, 10.1007/s00198-011-1680-4 · DOI
  4. Bolland, 2011, Re: The calcium scare: What would Austin Bradford Hill have thought?, Osteoporos. Int., 22, 3079, 10.1007/s00198-011-1783-y · DOI
  5. Bolland, 2015, Calcium supplements increase risk of myo-cardial infarction, J. Bone. Miner. Res., 30, 389, 10.1002/jbmr.2357 · DOI
  6. Chung, 2016, Calcium Intake and cardiovascular Disease Risk: An Updated Systematic Review and Meta-analysis, Ann. Intern. Med., 165, 856, 10.7326/M16-1165 · DOI
  7. Kopecky, 2016, Lack of Evidence Linking Calcium With or Without Vitamin D Supplementation to Cardiovascular Disease in Generally Healthy Adults: A Clinical Guideline from the National Osteoporosis Foundation and the American Society for Preventive Cardiology, Ann. Intern. Med., 165, 867, 10.7326/M16-1743 · DOI
  8. Higgins, 2002, Quantifying heterogeneity in a meta-analysis, Stat. Med., 21, 1539, 10.1002/sim.1186 · DOI · Paper page
  9. Dallal, 1990, A controlled trial of the effect of cal-cium supplementation on bone density in postmenopausal women, N. Engl. J. Med., 323, 878, 10.1056/NEJM199009273231305 · DOI · Paper page
  10. Reid, 1995, Long-term effects of calcium supplementation on bone loss and fractures in postmenopausal women: A randomized controlled trial, Am. J. Med., 98, 331, 10.1016/S0002-9343(99)80310-6 · DOI · Paper page
  11. Baron, 1999, Calcium Supplements for the Prevention of Colorectal Adenomas, N. Engl. J. Med., 340, 101, 10.1056/NEJM199901143400204 · DOI · Paper page
  12. Kronborg, 2000, Calcium and fibre supplementation in prevention of colorectal adenoma recurrence: A randomised intervention trial, Lancet, 356, 1300, 10.1016/S0140-6736(00)02813-0 · DOI · Paper page
  13. Brazier, 2005, Clinical and laboratory safety of one year’s use of a combination calcium + vitamin D tablet in ambulatory elderly women with vita-min D insufficiency: Results of a multicenter, randomized, double-blind, place-bo-controlled study, Clin. Ther., 27, 1885, 10.1016/j.clinthera.2005.12.010 · DOI
  14. Prince, 2006, Effects of calcium supplementation on clin-ical fracture and bone structure: Results of a 5-year, double-blind, placebo-controlled trial in elderly women, Arch. Intern. Med., 166, 869, 10.1001/archinte.166.8.869 · DOI · Paper page
  15. Bonnick, 2007, Treatment with alendronate plus calcium, alendronate alone, or calcium alone for postmenopausal low bone mineral density, Curr. Med. Res. Opin., 23, 1341, 10.1185/030079907X188035 · DOI
  16. Lappe, 2007, Vitamin D and calcium supple-mentation reduces cancer risk: Results of a randomized trial, Am. J. Clin. Nutr., 85, 1586, 10.1093/ajcn/85.6.1586 · DOI · Paper page
  17. Reid, 2008, Randomized controlled trial of calcium supple-mentation in healthy, non-osteoporotic, older men, Arch. Intern. Med., 168, 2276, 10.1001/archinte.168.20.2276 · DOI
  18. Chailurkit, 2010, Discrepant influence of vitamin D status on parathyroid hormone and bone mass after two years of calcium supplemen-tation, Clin. Endocrinol., 73, 167, 10.1111/j.1365-2265.2010.03779.x · DOI
  19. Bolland, 2011, Calcium and vitamin D supplements and health outcomes: A reanalysis of the Women’s Health Initiative (WHI) limited-access data set, Am. J. Clin. Nutr., 94, 1144, 10.3945/ajcn.111.015032 · DOI · Paper page
  20. Avenell, 2012, Long-Term Follow-Up for Mortality and Cancer in a Randomized Placebo-Controlled Trial of Vitamin D3and/or Calcium (RECORD Trial), J. Clin. Endocrinol. Metab., 97, 614, 10.1210/jc.2011-1309 · DOI
  21. Bolland, 2013, Differences between self-reported and verified adverse cardiovascular events in a randomised clinical trial, BMJ Open, 3, e002334, 10.1136/bmjopen-2012-002334 · DOI
  22. Bolland, 2015, Calcium intake and risk of fracture: Systematic review, BMJ, 351, h4580, 10.1136/bmj.h4580 · DOI · Paper page
  23. Guillemant, 1993, Comparison of the suppressive effect of two doses (500 mg vs. 1500 mg) of oral calcium on parathyroid hormone secretion and on urinary cyclic AMP, Calcif. Tissue Int., 53, 304, 10.1007/BF01351833 · DOI
  24. Bristow, 2014, Acute and 3-month effects of microcrystalline hydroxyapatite, calcium citrate and calcium carbonate on serum calcium and markers of bone turnover: A randomised controlled trial in postmenopausal women, Br. J. Nutr., 112, 1611, 10.1017/S0007114514002785 · DOI
  25. Green, 2003, Postprandial metabolic responses to milk enriched with milk calcium are different from responses to milk enriched with calcium car-bonate, Asia Pac. J. Clin. Nutr., 12, 109
  26. Wang, 2012, Calcium Intake and Risk of Cardiovascular Disease, Am. J. Cardiovasc. Drugs, 12, 105, 10.2165/11595400-000000000-00000 · DOI
  27. Wang, X., Chen, H., Ouyang, Y., Liu, J., Zhao, G., Bao, W., and Yan, M. (2014). Dietary calcium intake and mortality risk from cardiovascular disease and all causes: A meta-analysis of prospective cohort studies. BMC Med., 12. · DOI
  28. Reynolds, 2004, Human vascular smooth muscle cells undergo vesicle-mediated calcification in response to changes in extracellular calcium and phosphate concentrations: A potential mechanism for accelerated vascular calci-fication in ESRD, J. Am. Soc. Nephrol., 15, 2857, 10.1097/01.ASN.0000141960.01035.28 · DOI · Paper page
  29. Reid, 2010, Does calcium supplementation increase cardiovascular risk?, Clin. Endocrinol., 73, 689, 10.1111/j.1365-2265.2010.03792.x · DOI
  30. Alam, 2008, Calcification is associated with loss of functional calcium-sensing receptor in vascular smooth muscle cells, Cardiovasc. Res., 81, 260, 10.1093/cvr/cvn279 · DOI
  31. Shin, 2012, Impact of serum calcium and phosphate on coro-nary atherosclerosis detected by cardiac computed tomography, Eur. Heart J., 33, 2873, 10.1093/eurheartj/ehs152 · DOI
  32. Fukuda, 2006, Effect of whole blood clotting time in rats with ionized hypocalcemia induced by rapid intravenous citrate infusion, J. Toxicol. Sci., 31, 229, 10.2131/jts.31.229 · DOI
  33. Bristow, 2015, Acute effects of calcium supplements on blood pressure and blood coagulation: Secondary analysis of a randomised controlled trial in post-menopausal women, Br. J. Nutr., 114, 1868, 10.1017/S0007114515003694 · DOI
  34. Reid, 2016, Circulating calcium concentrations, vascular dis-ease and mortality: A systematic review, J. Intern. Med., 279, 524, 10.1111/joim.12464 · DOI
  35. Larsson, 2017, Association of Genetic Variants Related to Serum Calcium Levels With Coronary Artery Disease and Myocardial Infarction, JAMA, 318, 371, 10.1001/jama.2017.8981 · DOI
  36. Zhao, 2017, Association Between Calcium or Vitamin D Supplementation and Fracture Incidence in Community-Dwelling Older Adults A Sys-tematic Review and Meta-analysis, JAMA, 318, 2466, 10.1001/jama.2017.19344 · DOI · Paper page

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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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