10 Key Indicators of Potassium Deficiency

3. Cramping

One of the most recognizable early warning signs of a potassium deficiency is muscle cramps. The most common areas in which people experience cramping are in the arms, legs, and feet. This occurs when the cells that enable the muscles in the human body to function properly do not receive the needed electrical responses and signals. The cramping can range from mild cramping to painful, extreme cramping that can make it difficult to walk or sit still. A severe cramp called a "Charley Horse" is a notable symptom of low potassium. If you experience a type of twitching or pressure in the toes that causes them to draw up, this can also be an early warning sign for low potassium.