To the Editor We read with interest the recent article titled “Dietary Sodium Content, Mortality, and Risk for Cardiovascular Events in Older Adults: The Health, Aging, and Body Composition (Health ABC) Study” by Kalogeropoulos et al1 published in your journal. Based on a 10-year prospective cohort study consisting of 2642 older adults aged 71 to 80 years, the authors found that higher dietary sodium (>2300 mg/d) was not statistically associated with 10-year mortality, incident cardiovascular disease (CVD), or incident heart failure (HF), compared with normal sodium intake (1500-2300 mg/d). However, the conclusions by Kalogeropoulos et al should be interpreted with caution because of several limitations of the study.
Liu Z, Zhang X. Dietary Sodium Intake and Risk of Cardiovascular Disease. JAMA Intern Med. 2015;175(9):1579. doi:10.1001/jamainternmed.2015.2555