What causes premature ventricular contractions of the heart?

Premature ventricular contractions (PVCs) are caused by abnormal electrical activity in the ventricles of the heart, leading to early heartbeats. Factors contributing to PVCs include stress, caffeine, alcohol, electrolyte imbalances, and underlying heart conditions such as cardiomyopathy or ischemic Heart disease. While often benign, frequent PVCs may indicate a more serious heart issue and should be evaluated by a healthcare professional.