[Salt consumption and cardiovascular risk : a plea for salt reduction]

Area of Science:

• Cardiovascular Science
• Nephrology
• Hypertension Research

Context:

• Long-term high salt (sodium chloride) intake is a significant risk factor for arterial hypertension, particularly systolic hypertension.
• Elevated sodium consumption contributes to vascular damage, including aortic stiffness and reduced vascular compliance, impacting central blood pressure and cardiac load.

Purpose:

• To summarize the detrimental effects of high salt intake on cardiovascular and renal systems.
• To highlight the evidence supporting sodium reduction and potassium increase for cardiovascular health.

Summary:

• High salt intake promotes hypertension, aortic stiffness, and decreased vascular compliance, leading to increased cardiac load and risk of stroke, heart failure, and renal insufficiency.
• Randomized trials demonstrate that lowering sodium intake effectively reduces blood pressure.
• Long-term studies confirm that reduced sodium consumption decreases cardiovascular morbidity and mortality.

Impact:

• Evidence supports recommendations for simultaneous reduction in sodium and increase in potassium intake to mitigate cardiovascular risks.
• Dietary modifications focusing on sodium and potassium balance can improve vascular function and reduce the incidence of cardiovascular diseases.
• Public health strategies should emphasize lower sodium and higher potassium consumption for preventing hypertension and heart failure.