Micronutrients & recovery
Potassium supplementation significantly lowers blood pressure in normotensive individuals with low habitual dietary intake, whereas calcium and magnesium supplements do not.
If you are normotensive but have a diet low in potassium, supplementing with potassium (approx 40 mmol/day) can modestly lower your blood pressure. However, adding calcium or magnesium supplements does not help and may not be necessary. Focus on identifying if your dietary intake is low before supplementing.
In conclusion, potassium, but not calcium or magnesium supplements, has a modest blood pressure–lowering effect in normotensive persons with low dietary intake.
Why this rating
Randomized, double-blind, placebo-controlled trial with a large sample size (n=300) and objective 24-hour ambulatory blood pressure monitoring.
Source
Effect on Blood Pressure of Potassium, Calcium, and Magnesium in Women With Low Habitual Intake
Frank M. Sacks et al. · Hypertension · 1998
DOI 10.1161/01.hyp.31.1.131
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