Hypertension affects approximately 25% of the adult populationworldwide, and its prevalence is predicted to increase by 60%by 2025, when a total of 1.56 billion people may be affected.1It is the major risk factor for cardiovascular disease and isresponsible for most deaths worldwide.2 Primary hypertension,also known as essential or idiopathic hypertension, accountsfor as many as 95% of all cases of hypertension.3
Primary hypertension results from the interplay of internalderangements (primarily in the kidney) and the external environment.Sodium, the main extracellular cation, has long been consideredthe pivotal environmental factor in the disorder. Numerous . . . [Full Text of this Article]
Dietary Sodium and Hypertension
Potassium Content of Sodium-Rich Diets
Vascular Effects of Potassium Depletion
Cardiovascular Effects of Potassium Supplementation
Lack of Adaptation of the Kidneys to the Modern Diet
Mechanisms of Altered Sodium and Potassium Homeostasis
Sodium Retention, Potassium Depletion, and Hypertension
Effects on the Arterial Wall
Effects on the Brain
Effects on Metabolism
Implications for Prevention and Treatment
Source Information
From the Department of Medicine, Baylor College of Medicine; the Department of Medicine, Methodist Hospital; and the Renal Section, Veterans Affairs Medical Center — all in Houston (H.J.A.); and the Department of Medicine, Tufts University School of Medicine, and the Division of Nephrology, Caritas St. Elizabeth's Medical Center — both in Boston (N.E.M.).
Address reprint requests to Dr. Madias at the Department of Medicine, Caritas St. Elizabeth's Medical Center, 736 Cambridge St., Boston, MA 02135, or at nicolaos.madias@caritaschristi.org.
Related Letters:
Mechanisms of Hypertension
Haddy F. J., Kotchen T. A., Handelman G., Kotanko P., Levin N. W., Epstein F. H., Adrogué H. J., Madias N. E.
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N Engl J Med 2007;
357:827-829, Aug 23, 2007.
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