April 27, 2015Archives of Pediatrics and Adolescent Medicine
Longitudinal Effects of Dietary Sodium and Potassium on Blood Pressure in Adolescent Girls
Key result
Higher dietary potassium intake was inversely associated with blood pressure change throughout adolescence (P<0.001), whereas sodium intake ≥3500 mg/d had no adverse effect on blood pressure.
Why the study?
Does dietary sodium and potassium intake affect blood pressure trajectories in adolescent girls?
Population
2,185 black and white girls initially aged 9 to 10 years, followed up for 10 years in a prospective cohort…
Comparison
Dietary sodium, potassium, and potassium to… vs Lower intake categories.
Design
Cohort
Follow-up
10 years
Authors
Discussion
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Implication
May support potassium emphasis over sodium restriction for adolescent BP; hypothesis-generating and requires prospective trials.
Study Design
Type
Cohort (n=2,185)
Multicenter
Yes
Structured PICO
Does dietary sodium and potassium intake affect blood pressure trajectories in adolescent girls?
P
Population
2,185 black and white girls initially aged 9 to 10 years, followed for 10 years to assess the effects of dietary sodium and potassium on blood pressure.
E
Exposure
Dietary sodium, potassium, and potassium to sodium ratio (mean intakes in individuals aged 9 to 17 years).
C
Comparator
Lower intake categories (e.g., sodium <2500 mg/d, lower potassium intakes).
O
Outcome
Mean systolic and diastolic blood pressures throughout adolescence and at the end of follow-up (individuals aged 17-21 years).surrogate
Main Result
p-value: p=<0.001
Higher dietary potassium intake, but not sodium restriction, is associated with lower blood pressure trajectories in adolescent girls.
Cite This Study
Buendia et al. (2015) conducted a cohort in High blood pressure (n=2,185). Dietary sodium and potassium intake vs. Lower intake levels was evaluated on Mean systolic and diastolic blood pressures throughout adolescence and at the end of follow-up (p=<0.001). Higher dietary potassium intake was inversely associated with blood pressure change throughout adolescence (P<0.001), whereas sodium intake ≥3500 mg/d had no adverse effect on blood pressure.