Higher 24-hour urinary sodium excretion was associated with increased blood pressure in normal-weight and overweight individuals (p<0.05), but not in underweight or obese groups.
Cross-Sectional (n=811)
Does the association between 24-hour urinary sodium excretion and blood pressure vary across BMI categories in adults not on antihypertensive medication?
The association between dietary sodium intake and blood pressure is most evident in normal-weight and overweight individuals, suggesting that BMI influences the blood pressure response to sodium.
p-value: p=<0.05
Objective: High sodium intake is a recognised risk factor for arterial hypertension. However, not all individuals respond to sodium intake in the same manner. It is still debated whether the association between sodium intake and blood pressure is similar across different body mass index (BMI) categories. Aim: To examine the association between sodium intake represented by 24-hour urinary sodium excretion (24UNaE) and blood pressure across BMI categories in individuals without antihypertensive medication in Lithuania.Design and method: A nationally representative, random sample involved 888 adults (aged 18-69 years, 47.5% men) from Lithuania, who provided 24-hour urine samples as part of the NATRIJOD2019 study. We analysed data from 811 participants who were not receiving antihypertensive treatment. They were classified into four BMI categories: 0.05). Conclusions: The strength of the association between 24UNaE and blood pressure differs across BMI categories. The findings of the NATRIJOD2019 study suggest that the 24UNaE – blood pressure relationship is most evident in normal-weight and overweight individuals, whereas it appears to be weaker in underweight and obese groups. These results support the idea that body mass index may influence the blood pressure response to dietary sodium and highlight the importance of considering BMI when interpreting the effects of sodium intake on blood pressure in clinical practice.
Žakauskienė et al. (Fri,) conducted a cross-sectional in Individuals without antihypertensive medication (n=811). 24-hour urinary sodium excretion (24UNaE) vs. Lower quartiles of 24UNaE was evaluated on Mean systolic and diastolic blood pressure values (p=<0.05). Higher 24-hour urinary sodium excretion was associated with increased blood pressure in normal-weight and overweight individuals (p<0.05), but not in underweight or obese groups.