Supplementing with Potassium using No-Salt during intermittent fasting (24-48 hours, a few times a week) is a practice some people use to maintain their electrolyte balance, particularly potassium levels. Here are some considerations based on current research:

1. Potassium Balance: Fasting, especially for longer periods, can lead to a deficit in potassium. Studies have shown that potassium supplementation during fasting can help mitigate this deficit¹². However, one study indicated that potassium supplementation might increase urinary calcium losses¹.

2. Electrolyte Maintenance: Maintaining electrolyte balance, including potassium, during fasting is crucial for normal bodily functions. Supplementation with both sodium chloride and potassium chloride can prevent some of the negative effects associated with electrolyte and energy restriction, such as reduced exercise capacity³.

3. Safety: The safety of potassium supplementation during fasting depends on individual health conditions. Over-supplementation of potassium can lead to hyperkalemia, a potentially dangerous condition, especially for individuals with kidney issues or those taking certain medications.

4. Hydration and Electrolytes: Proper hydration is essential during fasting. Along with potassium, maintaining other electrolytes like sodium and magnesium is also important to avoid imbalances that can affect muscle and nerve functions³⁴.

Given these considerations, it's advisable to monitor your potassium intake and consult with a healthcare provider before starting supplementation, especially under fasting conditions. They can provide personalized advice based on your health profile and specific needs.

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Footnotes

1. Calcium, magnesium, and phosphate balances during very low-calorie diets ↩ ↩²

2. Control of excretion of potassium: lessons from studies during prolonged total fasting ↩

3. Electrolyte supplementation during severe energy restriction increases exercise capacity in the heat ↩ ↩²

4. Ketogenic dietary therapies in epilepsy: recommendations ↩