High sodium diet may trigger heart failure, researchers say

A new study suggests that excessive salt consumption may do more than raise blood pressure — it could directly increase the risk of developing heart failure, particularly among high-risk populations.

Researchers from Vanderbilt University found that higher sodium intake was independently associated with new-onset heart failure, even after accounting for other common risk factors such as obesity, cholesterol levels, and hypertension.

The findings, published in the Journal of the American College of Cardiology: Advances, are based on data from more than 25,000 participants involved in a long-term study across the southeastern United States.

According to the research, participants were consuming an average of 4,269 milligrams of sodium per day, nearly double the recommended limit of 2,300 milligrams advised by the American Heart Association and federal guidelines.

The study found that this elevated intake was linked to a 15% higher risk of developing heart failure.

Furthermore, each additional 1,000 milligrams of sodium consumed daily increased that risk by approximately 8%.

Experts say the findings highlight the importance of even modest dietary changes. Reducing sodium intake even slightly could significantly lower the overall burden of heart disease, particularly in vulnerable communities.

However, researchers noted that access to healthier, low-sodium food options remains a major challenge, especially in underprivileged areas where processed and high-salt foods are more readily available.

The study’s authors are calling for stronger public health initiatives to promote healthier eating habits and improve access to nutritious food, emphasizing that small changes in diet could have a meaningful impact on long-term heart health.