Individuals with long-term sodium intake below 2,300 mg/day experience a 25% reduction in all-cause mortality compared to individuals with long-term sodium intake above 3,600 mg/day.

Study: Sodium Intake and All-Cause Mortality Over 20 Years in the Trials of Hypertension Prevention.

This study followed people for 20 years and found that those who ate less salt (under 2,300 mg/day) were less likely to die early than those who ate a lot of salt (over 3,600 mg/day), which matches the claim exactly.

Study: Self-Care and All-Cause Mortality in Patients With Chronic Heart Failure.

This study found that heart failure patients who ate less salt actually had a higher risk of dying, which is the opposite of what the claim says. So it contradicts the claim.

Study: Sodium intake and hypertension.

The study says eating less salt helps lower blood pressure and heart disease, but it doesn’t prove that eating under 2,300 mg of salt every day cuts overall deaths by 25% compared to eating over 3,600 mg.

Study: Lowering Sodium Intake: Reduction and Substitution for Cardiovascular Health.

The study says eating less salt is good for your heart, but it doesn’t show that cutting salt below 2,300 mg gives exactly a 25% lower risk of dying compared to eating more than 3,600 mg.