
Every extra 1,000 mg of salt raises heart failure risk, study finds
A ten-year study of about 25,000 low-income Black and White adults in the southeastern US found that higher daily sodium intake increases heart‑failure risk; each extra 1,000 mg of sodium per day raises risk by ~8%, and participants averaging 4,200 mg/day had a 27% incidence of heart failure. Following guidelines of 2,300 mg/day (1,500 mg for hypertension) and reducing intake toward 4,000 mg/day could prevent ~6.6% of new heart‑failure cases over a decade, though the study relied on self-reported data and may not generalize to all populations.













