Potassium supplements cure muscle cramps
evidence
The Claim
Many people believe that taking potassium supplements can immediately eliminate muscle cramps, especially cramps that occur during exercise or at night. This idea is based on the assumption that potassium deficiency is a common cause of muscle cramps.
Origin
This myth likely originates from early anecdotal reports and the known role of potassium in muscle function, which led to widespread belief and marketing claims.
What Science Says
Research indicates that while potassium is essential for proper muscle function, evidence from randomized controlled trials (RCTs) does not consistently show that potassium supplements are effective in treating muscle cramps. A meta-analysis of studies found that the causes of muscle cramps are varied, and while potassium deficiency can be a factor, it is not the sole cause in most cases.
Verdict
Misleading