Calcium supplements cause harm even within recommended dose limits

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Clinical trials and meta-analyses indicate that calcium supplements can increase the risk of cardiovascular events such as myocardial infarction and coronary heart disease, even when taken within standard recommended dose limits.

The analysis

Multiple randomized controlled trials and meta-analyses (such as papers [1] and [2]) have concluded that standard supplemental doses of calcium increase cardiovascular risks like coronary heart disease and myocardial infarction, particularly in populations like postmenopausal women. While paper [0] found no overall effect on cardiovascular outcomes in its broader review, the high-quality meta-analyses specifically isolating calcium supplements provide strong evidence that these supplements carry cardiovascular risks even within recommended doses.

Evidence for · 2

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

Recorded source metadata

Seung-Kwon Myung, Hong-Bae Kim, Yong-Jae Lee, Yoon-Jung Choi, Seung-Won Oh. Calcium Supplements and Risk of Cardiovascular Disease: A Meta-Analysis of Clinical Trials. 2021. https://doi.org/10.3390/nu13020368

This meta-analysis of clinical trials found that calcium supplement intakes within the 1000 mg per day range significantly increased the risk of cardiovascular disease and coronary heart disease in healthy postmenopausal women.

Source citation format

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More for · 1

The Evidence and Controversy Between Dietary Calcium Intake and Calcium Supplementation and the Risk of Cardiovascular Disease: A Systematic Review and Meta-Analysis of Cohort Studies and Randomized Controlled Trials

Recorded source metadata

Chao Yang, Xianglin Shi, H. Xia, Xian Yang, Hechun Liu, D. Pan, Guiju Sun. The Evidence and Controversy Between Dietary Calcium Intake and Calcium Supplementation and the Risk of Cardiovascular Disease: A Systematic Review and Meta-Analysis of Cohort Studies and Randomized Controlled Trials. 2019. https://doi.org/10.1080/07315724.2019.1649219

This systematic review and meta-analysis of randomized controlled trials demonstrated that calcium supplements significantly increase the risk of coronary heart disease and myocardial infarction even when utilized within standard supplemental ranges.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → SUPPORTED · 8701 Aug 2026

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