Who gets lone atrial fibrillation? What causes it? How do you manage it? The LAF surveys, undertaken over a 12-year period, answer these questions.The surveys reveal that lone atrial fibrillation [LAF] is by no means an "old age" disease (average age at diagnosis is 48 years) and that 80% of its victims are male. They also establish which drugs are optimal and which drugs should be shunned by LAF patients. The importance of supplements, particularly magnesium, is thoroughly investigated and protocols used by over 100 LAF patients who have managed to eliminate their atrial fibrillation episodes without ablation or surgery are described. The latest survey presents data for over 1000 catheter ablations and maze procedures and draws clear conclusions regarding the factors affecting success and failure of these procedures.