To the Editor In their article on the Health, Aging, and Body Composition (Health ABC) study, Kalogeropoulos and colleagues1 report that no association between salt intake and mortality or risk for cardiovascular disease (CVD) and heart failure (HF) in older adults was found based on self-reported estimated sodium intake with a food frequency questionnaire (FFQ). This result is not surprising since, compared with other ways of sodium intake assessment (ie, 24-hour urinary sodium excretion), it is known that FFQs are suboptimal tools to assess dietary sodium intake.
Yi B, Titze J, Choukèr A. Dietary Sodium Intake and Risk of Cardiovascular Disease. JAMA Intern Med. 2015;175(9):1578-1579. doi:10.1001/jamainternmed.2015.2558