PMID: 9162440Jan 1, 1996Paper

Salt sensitivity and insulin resistance: Is there a link?

Blood Pressure. Supplement
A M Sharma, U Schorr

Abstract

Salt sensitivity is not only found in patients with essential hypertension but also in normotensive individuals. These salt-sensitive normotensives are believed to be genetically predisposed to the development of hypertension. In this paper we present data from our studies in such normotensive salt-sensitive individuals, thereby focusing on the relationship between salt sensitivity and familial history of hypertension and on insulin sensitivity. Salt-sensitivity was associated with a positive familial history of hypertension, a finding that supports the hypothesis that salt sensitivity in normotensive individuals points to a genetic predisposition for the development of hypertension. Also, salt-sensitive subjects displayed a hyperinsulinaemic response to an oral glucose load and a decreased insulin-mediated glucose disposal, as assessed by the insulin suppression test. The latter finding implies that insulin resistance is present in otherwise healthy, hypertension-prone individuals before overt hypertension develops. Assuming that there is a pathophysiological relationship between insulin resistance and salt sensitivity, our findings suggest that early recognition of insulin resistance and the implementation of measures aimed a...Continue Reading

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