Open AccessDietary sodium intake and its relationship to adiposity in young black and white adults: The African‐ PREDICT study
Author(s) -
Crouch Simone H.,
Ware Lisa J.,
GafaneMatemane Lebo F.,
Kruger Herculina S.,
Van Zyl Tertia,
Van der Westhuizen Bianca,
Schutte Aletta E.
Publication year - 2018
Publication title -
the journal of clinical hypertension
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.909
H-Index - 67
eISSN - 1751-7176
pISSN - 1524-6175
DOI - 10.1111/jch.13329
Subject(s) - medicine , bioelectrical impedance analysis , body mass index , anthropometry , obesity , body surface area , urinary system , sodium , population , physiology , endocrinology , environmental health , chemistry , organic chemistry
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.