Low-sodium, high-potassium diet: feasibility and acceptability in a normotensive population.

Key Points

• To evaluate the feasibility and acceptability of two low-sodium, high-potassium dietary regimens with and without potassium chloride salt substitute in normotensive adults.
• Enrolled 69 normotensive volunteers in an 8-week controlled dietary study.
• Assigned participants to a control group or to one of two intervention diets targeting sodium intake below 70 mEq and potassium intake above 100 mEq, differing only by KCl salt substitute use.
• Measured dietary compliance and urinary excretion of sodium and potassium.
• Both dietary intervention groups achieved reduced sodium intake and increased potassium intake compared with the control group.
• Urinary sodium excretion decreased in the intervention diet groups, while urinary potassium excretion showed no significant change.
• Participants did not use the potassium chloride salt substitute as recommended, demonstrating poor acceptability.