Clinical Report: Impact of Sodium-Restricted Diet on Heart Failure Outcomes

Overview

This systematic review and meta-analysis evaluated the effects of sodium-restricted diets on heart failure (HF) patients. The findings indicate that such diets may increase all-cause and cardiac mortality without significantly affecting readmission rates or NT-proBNP levels.

Background

Heart failure is a prevalent condition that significantly impacts patient morbidity and mortality. Sodium restriction is a common dietary recommendation aimed at managing fluid retention in HF patients. However, recent evidence raises concerns about the potential adverse effects of strict sodium limitation, particularly in specific patient subgroups.

Data Highlights

Key Findings

• The sodium restricted diet group had a significantly higher all-cause mortality rate compared to the control group (RR 1.50).
• Cardiac mortality was also significantly higher in the sodium restricted diet group (RR 2.51).
• No statistically significant difference was found in HF readmission rates between the two groups.
• Subgroup analyses indicated increased risks of all-cause death and HF readmission in HFrEF patients on diuretics with fluid restriction.
• Quality of life may improve with sodium restriction, but serum NT-proBNP levels showed no significant change.

Clinical Implications

Highlight the importance of tailoring dietary advice to individual patient needs.

Conclusion

Stress the necessity for additional research on sodium intake effects in heart failure subgroups.

References

1. Clinical Research in Cardiology, 2023 -- Impact of Sodium Intake Limitation on Chronic Heart Failure: A Systematic Review and Meta-Analysis
2. Critical Care (Springer), 2025 -- Protocolized natriuresis-guided diuretic therapy in acute heart failure: a systematic review and meta-analysis
3. Clinical Research in Cardiology, 2026 -- Characteristics and outcomes of patients with heart failure and reduced left ventricular ejection fraction in relation to sodium-glucose cotransporter-2 inhibitor treatment: real-world data from the multicentre H2-registry
4. 2022 AHA / ACC / HFSA Guideline for the Management of Heart Failure
5. Frontiers, 2026 -- The effect of sodium restricted diet on the prognosis of heart failure patients—a systemic review and meta-analysis
6. Clinical Research in Cardiology — Impact of Receptor Specificity on the Advantages of SGLT2 Inhibitors for Heart Failure Patients: A Systematic Review and Comparative Efficacy Network Meta-Analysis
7. European Heart Failure Association Clinical Consensus
8. 2022 AHA / ACC / HFSA Guideline for the Management of Heart Failure
9. Frontiers | The effect of sodium restricted diet on the prognosis of heart failure patients—a systemic review and meta-analysis