Reducing dietary salt is not only important for those who already have elevated blood pressure - limiting added salt is essential for all of us to remain in good health.
Hypertension is an important risk factor for kidney disease, but dietary sodium has other damaging effects on the kidneys. High salt intake drives the production of oxygen radicals, leading to oxidative stress in kidney tissue.
Excess dietary salt is most notorious for increasing blood pressure. Americans have a 90 percent lifetime probability of developing high blood pressure - so even if your blood pressure is normal now, if you continue to eat the typical American diet, you will be at risk.