Many things can lead to, or cause, an arrhythmia, including:
- Scarring of heart tissue (such as from a heart attack)
- Changes to your heart's structure, such as from cardiomyopathy
- Blocked arteries in your heart (coronary artery disease)
- High blood pressure
- Diabetes
- Overactive thyroid gland (hyperthyroidism)
- Smoking
- Drinking too much alcohol or caffeine
- Drug abuse
- Stress
- Medications
- Dietary supplements and herbal treatments
- Electrical shock
