Can Low Potassium Cause Heart Palpitations?

Yes, low potassium levels can cause heart palpitations and other cardiac irregularities. Potassium is essential for proper electrical conduction in the heart muscle. When blood potassium drops below 3.5 mEq/L (hypokalemia), it disrupts the heart's normal rhythm and can trigger palpitations, skipped beats, or irregular heartbeats. Severe potassium deficiency may even lead to dangerous arrhythmias. Common causes include certain medications, excessive sweating, vomiting, or inadequate dietary intake. If you're experiencing persistent palpitations, especially with symptoms like weakness, fatigue, or muscle cramps, seek medical evaluation to check your electrolyte levels and determine appropriate treatment.