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Low-Salt Diet May Lower Blood Pressure

2008 Sep 22

Salt is essential not only to life, but to good health. The body’s salt:water ratio is critical to metabolism, and salt maintains the electrolyte balance inside and outside of cells. Even human blood contains salt, 0.9 percent—the same concentration as found in sodium chloride irrigant commonly used to cleanse wounds. Most of our salt comes from food, some from water. However, for people who are “salt sensitive,” too much salt in the daily diet can contribute to resistant high blood pressure, or hypertension—a type that doesn’t respond to medications. In a recent study, these patients were able to achieve significant reduction in blood pressure just by reducing their salt intake.

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