A May 23, 2017 study in HEART (British Cardiac Society) found that people with Atrial Fibrillation, especially men, had great benefit eating a moderate amount of dark chocolate daily.

Atrial Fibrillation affects about 2.7 million Americans and causes symptoms such as heart palpitations, shortness, dizziness, fatigue, and sometimes chest pain or pressure. It is a leading cause for blood clots, stroke, and heart failure, and has a greater incidence in men, particularly those with underlying coronary artery disease.

It is proposed that the high flavonoid content of chocolate that is helpful in AF. Flavonoids can also be found in tea and almost all fruits and veggies.