There is no simple answer to this question since whether you should have an AED or not is based on your risk of sudden cardiac arrest. Persons at the highest risk have implanted defibrillators so they do not need an AED. Healthy persons with no sign of heart disease are at very low risk and do not need an AED. But persons with heart disease (coronary artery disease, heart failure, or heart rhythm disturbance) are at intermediate risk. Where you fall on this scale of risk is something you can discuss with your physician. Together you can decide if an AED is useful for you.