Effects of Salt Substitute on Urinary Electrolytes and Blood Pressure
Author Information
Author(s): Wu Hao, Ouyang Wenbin, Deng Jing, He Yongmei, Yin Lu, Cao Xia, Chen Zhiheng, Yang Pingting, Wang Yaqin, Li Ying, Huang Xin
Primary Institution: The Third Xiangya Hospital, Central South University, Changsha, China
Hypothesis
Does the use of salt substitute lead to better urinary electrolyte levels and blood pressure control compared to salt restriction in a real-world setting?
Conclusion
Salt substitute results in more sodium reduction and greater potassium increase compared to salt restriction, but does not improve blood pressure control.
Supporting Evidence
- Salt substitute users had lower urinary sodium excretion compared to those on salt restriction.
- Salt substitute users had higher urinary potassium excretion than those on salt restriction.
- Using salt substitute did not significantly change blood pressure levels compared to salt restriction.
Takeaway
Using a salt substitute can help people lower their sodium and increase their potassium, but it doesn't necessarily make their blood pressure better.
Methodology
A cohort study comparing the effects of salt substitute and salt restriction on urinary electrolytes and blood pressure over one year.
Potential Biases
Potential residual confounding may exist despite adjustments for major sociodemographic characteristics and cardiometabolic factors.
Limitations
The study did not use the gold standard 24-h urine test for sodium and potassium intake, and it did not account for salt intake from meals consumed away from home.
Participant Demographics
Participants included adults with high sodium intake, with a higher proportion of females and individuals with normal weight, diabetes, and dyslipidemia in the salt substitute group.
Statistical Information
P-Value
p<0.01
Confidence Interval
95% CI: (−0.14, −0.08)
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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