I just watched Sanjay Gupta's YouTube video on anticoagulants. He said it is not the Afib but the company it keeps that is responsible for a stroke therefore anticoagulation is only advised if you have other factors i.e high blood pressure, diabetes, heart failure etc.
If that is the case why are all women over the age of 75 with a base score of 2 on the ChadVasc index, (i.e. because of their age alone, even if they have no other risk factors and not even suffering from Afib), not on anticoagulants!!!