DUTCH Weight Control in Atrial Fibrillation Study

This study tests whether a structured weight loss program can improve heart rhythm outcomes in people who have recently been diagnosed with a type of irregular heartbeat called persistent atrial fibrillation (AF). Obesity is known to worsen AF, and this trial explores whether losing weight helps. **You may be eligible if...** - You are 18 or older - You have been recently diagnosed with persistent atrial fibrillation (within the last 6 months) - You are obese (BMI of 30 or higher), or have a BMI of 27 or higher with a weight-related health condition like high blood pressure or diabetes - You are experiencing symptoms from atrial fibrillation **You may NOT be eligible if...** - You have had AF for a long time or previously treated AF - You have had heart surgery or a prior heart rhythm procedure - You have other serious heart conditions - You are pregnant Talk to your doctor to see if this trial is right for you.