title: I have heard conflicting advice regarding coffee and caffeine through the years.  I had heard caffeine can contribute to high blood pressure, but I just recently read where coffee drinkers who have atrial fibrillation (as I do) have fewer serious rhythm disturbances.  What's your advice?
mesh_terms: D001794:Blood Pressure / Q000187:drug effects*; D002110:Caffeine / Q000008:administration & dosage / Q000009:adverse effects*; D002318:Cardiovascular Diseases / Q000209:etiology / Q000517:prevention & control*; D002319:Cardiovascular System / Q000187:drug effects; D003069:Coffee / Q000009:adverse effects*; D005247:Feeding Behavior; D006801:Humans; D006973:Hypertension / Q000517:prevention & control; D012307:Risk Factors
chemical_list: D003069:Coffee; D002110:Caffeine