
The Salt Line: 4,200 mg a Day Linked to Higher Heart Failure Risk
A Vanderbilt-led study of 25,306 adults found that consuming about 4,200 mg of sodium daily—almost twice the recommended limit—was linked to a 15% higher risk of developing heart failure, with each additional 1,000 mg raising risk by 8% independent of other factors. Even modest reductions in average sodium could prevent a meaningful portion of new heart failure cases over 10 years (about 6.6% in the studied population), but most sodium comes from packaged foods, presenting challenges for lowering intake, especially in high-risk, low-resource communities; multilevel public health efforts will be needed.













