Eating a balanced, nutritious diet and being physically active is the best way to stay healthy and help reduce your risk of disease. To maintain a stable weight, your energy (kilojoule) intake needs to equal the energy you use. If you use more energy than you consume, you will lose weight. On the other hand, if you eat more than you use, you will gain weight.
The sensible answer to losing excess body fat is to make small healthy changes to your eating and exercise habits. These changes should be things that you can maintain as part of your lifestyle – that way you will lose weight and keep it off.