A review of data concerning more than 161,000 South Korean adults revealed that those who brushed their teeth three or more times a day had a 10% lower risk for atrial fibrillation and a 12% reduced risk for heart failure over the following decade. The researchers suspect that frequent tooth brushing may reduce the presence of potentially harmful germs between the teeth and gums, preventing the bacteria from entering the bloodstream and causing an inflammatory response that is associated with an elevated risk for atrial fibrillation and heart failure.
European Journal of Preventive Cardiology, December 2019