The 12-month gastric balloon is a temporary method used in the treatment of obesity. In this procedure, an inflatable balloon is placed in the stomach and remains there for 12 months. The gastric balloon reduces the stomach volume, providing a feeling of fullness and encouraging the person to consume less food. During this period, it is used in conjunction with a healthy eating plan and lifestyle changes to achieve weight loss. The 12-month gastric balloon is a tool used to support the weight loss process, but other methods should be considered for long-term weight control. The gastric balloon method can be considered as a supportive option in the fight against obesity, but its suitability and potential risks for each patient should be evaluated by a specialist doctor.