Obesity and salt intake are both established factors contributing to cardiovascular disease development. Recently, studies found a controversial positive relationship between dietary salt and obesity. Therefore, the authors investigated whether obesity‐related measures are associated with 24‐hour urinary sodium in a healthy biethnic population. The study included 761 adults (20‐30 years) with complete 24‐hour urinary sodium, anthropometry, and bioelectrical impedance measurements. In single regression analyses all obesity‐related measures related positively with 24‐hour urinary sodium (P ≤ .008). However, with multivariate adjustments for energy intake, accelerometery, age, sex, black and white ethnicity, and other covariates, only body surface area (BSA ) remained independently associated with 24‐hour urinary sodium (R 2 = 0.72, β = .05, P = .039). To conclude, we found a consistent and robust positive relationship between BSA and estimated salt intake – but not with traditional obesity measures such as body mass index (BMI ). Further studies are needed to investigate body surface area and potentially, skin area, in salt handling

Direct Link: https://doi.org/10.1111/jch.13329

Journal: The Journal of Clinical Hypertension. 2018 Aug;20(8):1193-202

Keywords: dietary sodium, energy expenditure, energy intake, obesity, salt,

Applications: Energy Balance,

CamNtech Reference: AH18055

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