According to a study published in the European Journal of Preventive Cardiology brushing your teeth frequently is linked to a lower risk of atrial fibrillation and heart failure.

Poor oral hygiene leads to bacteria in the blood which causes inflammation in the body based on previous research; inflammation increases the risk of atrial fibrillation and heart failure and this study examined the connection between oral hygiene and occurrence of these conditions.

161,286 participants between the ages of 40–79 with no history of heart failure or atrial fibrillation who were part of the Korean National Health Insurance System were enrolled in this study; participants had a routine medical exam between 2003–2004 and information on weight, height, lifestyle, illnesses, lab tests, oral health, and oral hygiene behaviors was collected.