Updated Info – Consumer Report by OSHF – Electrolytes for Fasting 2026

Why Electrolytes Are Your Fasting Best Friend

Fasting without electrolytes is like driving a car without oil—it might run for a while, but eventually, things start to break down.
I’ve been fasting for years, and I can tell you firsthand: electrolytes make all the difference.
They keep your energy up, your mind clear, and your body balanced even when you’re not eating.
If you’ve ever felt dizzy, tired, or “off” during a fast, you probably needed electrolytes.
Stick around, and I’ll show you exactly how to pick the right ones and use them like a pro.

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What Happens to Your Body When You Fast?

When you stop eating, your body starts burning stored fat for energy.
But here’s the catch: you also lose minerals—fast.
Sodium, potassium, and magnesium flush out through urine, and if you don’t replace them, you might feel weak or get headaches.
One study followed 46 people fasting for six weeks. Those who took electrolytes avoided major energy crashes and stayed hydrated
I remember my first extended fast—I felt so drained until I started adding electrolytes to my water. It was a game-changer.

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The Big Three: Sodium, Potassium, Magnesium

Not all electrolytes are created equal. You need the right mix:

• Sodium: Keeps fluids balanced and nerves firing. Table salt helps, but during a fast, you need more.
• Potassium: Supports muscles and heart rhythm. Low levels can cause cramps.
• Magnesium: Helps with relaxation and energy production. Many people are low even when they’re not fasting!

Dr. Berg, a well-known health expert, says, “The best electrolyte supplements for fasting are sugar-free, zero-calorie powders or capsules that contain all essential electrolytes” 

I always look for products with these three—nothing fancy, just what works.