What increases my risk for arrhythmia?

Age, genetics, and lifestyle factors can all increase your risk for arrhythmia. As you age, your heart naturally weakens, which can hinder heartbeat regulation. Coronary heart disease, a heart attack, and other heart damage can create scar tissue, which increases your risk for arrhythmia. Lifestyle factors include smoking, diabetes, obesity, and sleep apnea. The use of caffeine, some drugs including over-the-counter medications, and alcohol can all alter your heart's natural rhythms. Thyroid problems or an electrolyte imbalance can also alter your heartbeat. Finally, if you were born with a heart abnormality, you are at greater risk for arrhythmia.