It's the same way to lose fat that is stored anywhere else in the body: You must use those excess calories that are stored as fat. Exercise (both cardio and strength training) along with a low-fat, low-carb diet on a regular basis will do the trick. There are no healthy short-cuts via pills or fancy ab equipment that will achieve the loss of belly fat for good other than a healthy lifestyle. You don't have to join a gym. Just go on a daily walk for 45 minutes and eat less while making healthy food choices. Whole foods. Fewer carbs. This works for me and I had a lot of belly fat for years due to bearing children and overeating.