In recent years, the gastric balloon has gained more attention as obesity has become increasingly common. This method is especially preferred by individuals who are hesitant to undergo surgery for weight loss.

The gastric balloon, a method that facilitates weight loss, is made from a silicone material that is harmless to the body. Balloon volumes range from 500 ml to 1000 ml, and the appropriate size is determined by the doctor after examinations and tests. One of the most frequently asked questions is how much weight can be lost with a gastric balloon. Before addressing that, let's briefly explain how the balloon is placed.

How is the Gastric Balloon Placed?

The procedure is very comfortable, and patients experience no pain, cramps, or discomfort because it is performed under sedation (sedoanalgesia). During this sedation, patients typically do not remember anything for about 10 minutes, and there are no side effects associated with the sedation.

After sedation, an endoscopy is performed to check the stomach for ulcers or reflux. If ulcers or significant reflux are present, the procedure is postponed until these issues are treated. If no problems are found, the balloon is inserted through the mouth into the stomach without any incisions, so no sutures are needed.

A medical tube is used to guide the balloon into the stomach, after which the balloon is filled with methylene blue, commonly referred to as “blue water,” to inflate it. Once the balloon is inflated to the desired volume, the procedure is complete.

Are There Risks?

Gastric balloon placement is generally very safe, especially when performed by an experienced doctor. The main risk is minor damage to the esophagus caused by the stiff tip of the balloon during insertion.

Gastric balloons must be removed after a certain period; otherwise, there is a risk of rupture. If the balloon ruptures, urine may turn blue, signaling the need for immediate removal. In some cases, rupture can cause intestinal obstruction, which is why it is crucial to monitor the usage duration carefully. It is also important to ensure that the balloon is from a reliable brand and has CE or FDA approval.

How Much Weight Can Be Lost?

Weight loss varies depending on the patient and the balloon size, but on average, patients can lose around 20% of their body weight. Success depends on following dietary guidance, attending follow-ups, and using a high-quality balloon.

How Does It Work?

During the first three days after placement, the body may attempt to expel the balloon, causing nausea or vomiting in about 10% of patients. Within these days, patients often lose 3–5 kg. The balloon occupies space in the stomach, sending signals to the brain that create a feeling of fullness, leading to reduced food intake. Combined with diet and exercise, this initiates the weight-loss process.

How Long Can the Balloon Stay in the Stomach?

There are two main durations for gastric balloons:

• 6-month balloons

• 12-month balloons

Sometimes, removal may be delayed by 2–3 months without harm, but prolonged retention should be avoided.

Does It Work?

If applied at the right time and to the right patient, the gastric balloon is highly effective. Following medical and dietary guidance ensures successful weight loss.

Can the Balloon Rupture?

Balloons undergo extensive testing before use, making rupture extremely unlikely. No harmful cases have been reported, but removal at the end of the usage period is essential.

What is Inside the Balloon?

Modern gastric balloons are filled with water or air. Water-filled balloons are preferred, as air-filled balloons have more complications and are more difficult to place.

Is There an Age Limit?

There is no strict age limit, but in practice, it is recommended for patients over 10 years old. Pediatric consultation is advised before the procedure for younger patients.