Calcium and Cardiovascular Disease

Ian R Reid1,2, Sarah M Birstow1, Mark J Bolland1

  • 1Department of Medicine, University of Auckland, Auckland, New Zealand.

Insights

High circulating calcium levels increase vascular disease risk, independent of other factors. Dietary calcium is safer than supplements for cardiovascular health.

Area of Science:

  • Cardiovascular Medicine
  • Nephrology
  • Nutritional Science

Background:

  • Elevated circulating calcium is a recognized risk factor for vascular disease, supported by extensive longitudinal studies.
  • Potential mediation by other cardiovascular risk factors exists, but an independent effect of serum calcium is suggested.
  • Genetic variations in the calcium-sensing receptor linked to higher serum calcium correlate with cardiovascular disease, implying causality.

Purpose of the Study:

  • To evaluate the association between circulating calcium levels and vascular disease risk.
  • To investigate the role of calcium supplements versus dietary calcium in cardiovascular health.
  • To analyze the impact of calcium on mortality and vascular disease progression.

Main Methods:

  • Analysis of prospective studies with large participant cohorts and long follow-up periods.
  • Review of clinical trials involving calcium supplements in patients with varying degrees of renal function.
  • Meta-analyses of randomized controlled trials and observational studies on dietary calcium intake.

Main Results:

  • Prospective studies indicate circulating calcium is an independent risk factor for vascular disease.
  • Trials in renal failure patients show increased mortality and vascular disease with calcium supplements.
  • Meta-analyses suggest adverse cardiovascular effects from calcium supplements, particularly in calcium-naive individuals.

Conclusions:

  • Circulating calcium is a significant risk factor for vascular disease.
  • Dietary calcium intake is preferable to calcium supplements for cardiovascular health.
  • High calcium intake, especially from supplements, may accelerate vascular disease and increase mortality.

Related Concept Videos

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
564
Antihypertensive Drugs: Action of Calcium Channel Blockers01:18

Antihypertensive Drugs: Action of Calcium Channel Blockers

Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
1.9K
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
1.3K
Psychoneuroimmunology: Cardiovascular Disease01:27

Psychoneuroimmunology: Cardiovascular Disease

Psychoneuroimmunology (PNI) is a multidisciplinary field that examines how psychological factors, particularly stress, interact with the immune system and impact physical health. Research in PNI has shown that chronic or traumatic stress can disrupt both the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system. These disruptions contribute to serious health conditions, including cardiovascular diseases.
A key area of focus in PNI is the relationship between stress and coronary...
597