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The calcium deficiency hypothesis of hypertension

D A McCarron1, C D Morris

  • 1Department of Medicine, Oregon Health Sciences University, Portland.

Annals of Internal Medicine
|December 1, 1987
PubMed

Insights

Calcium plays a protective role in managing blood pressure and hypertension. Dietary calcium may lower blood pressure through direct effects on blood vessels, offering nonpharmacologic treatment options.

Area of Science:

  • Cardiovascular Physiology
  • Human Nutrition
  • Nephrology

Background:

  • The role of calcium homeostasis in hypertension prevention and treatment is debated.
  • Conflicting interpretations exist regarding the data supporting calcium's role.

Purpose of the Study:

  • To provide an updated perspective on calcium's role in hypertension.
  • To review epidemiologic, clinical, and laboratory data on calcium and blood pressure.

Main Methods:

  • Summarized epidemiologic data on calcium and hypertension.
  • Reviewed clinical studies of calcium metabolism in hypertensive humans.
  • Analyzed controlled calcium supplementation trials.
  • Examined laboratory findings on calcium's vascular mechanisms.

Main Results:

  • Epidemiologic and clinical trial data support calcium's protective role in blood pressure regulation.
  • A link between the "calcium hypothesis" and "salt-sensitivity" may offer mechanistic insights.
  • Dietary calcium lowers blood pressure partly via direct vascular actions.

Conclusions:

  • Evidence supports a role for calcium in regulating arterial pressure.
  • Calcium supplementation may be a viable nonpharmacologic approach for hypertension.
  • Understanding calcium-vasculature interactions is key to hypertension management.

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