Certain factors may increase your risk of developing an arrhythmia. These include; being born with a heart abnormality that affects the heart's rhythm, with age, the heart muscle naturally weakens and loses some of its flexibility, narrowed heart arteries, heart attack, abnormal valves and other heart damage, thyroid problems, high blood pressure, obesity, diabetes, obstructive sleep apnea, too much alcohol consumption, caffeine, nicotine and other stimulants can cause your heart to beat faster.
Attribution: Straight Talk Foundation