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Calcium and hypertension.

M H Walczyk1, D A McCarron

  • 1Department of Medicine, Oregon Health Sciences University, Portland 97201.

Comprehensive Therapy
|November 1, 1987
PubMed
Summary

Maintaining normal calcium metabolism is linked to lower blood pressure. Dietary calcium may help lower blood pressure in some essential hypertension patients, particularly those with calcium deficiency.

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Area of Science:

  • Cardiovascular Physiology
  • Human Hypertension
  • Calcium Metabolism

Background:

  • Cardiovascular physiology is complex, with no single factor solely determining elevated blood pressure.
  • Growing evidence suggests a link between normal calcium metabolism and lower arterial pressure.
  • Hypertension studies indicate calcium's role in blood pressure regulation.

Purpose of the Study:

  • To explore the association between calcium metabolism and blood pressure.
  • To evaluate dietary calcium supplementation as a nonpharmacologic treatment for essential hypertension.
  • To investigate the potential relationship between salt sensitivity, calcium homeostasis, and hormonal regulation in hypertension.

Main Methods:

  • Epidemiologic observations
  • Studies in experimental hypertension
  • Studies in human hypertension
  • Dietary calcium supplementation trials

Main Results:

  • Maintenance of normal calcium metabolism is associated with lower arterial pressure.
  • Dietary calcium supplementation can effectively lower blood pressure in some essential hypertension patients, especially those with calcium deficiency.
  • Preliminary evidence suggests a link between salt sensitivity and disordered calcium homeostasis in some hypertensive individuals.

Conclusions:

  • Normal calcium metabolism is important for maintaining lower arterial pressure.
  • Dietary calcium supplementation is a potential nonpharmacologic intervention for specific hypertensive patients.
  • Further research is needed to clarify the role of calcium in salt sensitivity and hormonal regulation of blood pressure.

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