Study says low-salt diets linked to increased insulin resistance

In a study published in the Journal of Metabolic Health, researchers reviewed 23 clinical trials examining the effects of low-salt intake on glucose and insulin markers. Their findings suggested that reducing salt intake may have unintended negative effects, including increased insulin resistance, a significant risk factor for type 2 diabetes.

The analysis revealed that restricting salt consistently led to poorer blood sugar control and heightened insulin resistance. For instance, a moderate reduction in salt intake doubled fasting insulin levels in healthy young men within just one week. In patients with high blood pressure, an extreme low-salt diet significantly increased blood glucose and insulin spikes.

Reference:

James J. DiNicolantonio, James H. O’Keefe, et al,; Sodium restriction and insulin resistance: A review of 23 clinical trials; Journal of Metabolic Health