A Minimally Invasive Solution for Healthy Weight Loss
The gastric balloon is one of the most effective non-surgical weight loss treatments, recommended for people with excess weight or obesity who are looking for a less invasive solution than bariatric surgery. It is a temporary medical device, placed inside the stomach through endoscopy, that takes up space and reduces stomach capacity, promoting an earlier and longer-lasting sense of fullness.
At Clínica AEGER Prima, in Lisbon, gastric balloon placement is performed by experienced gastroenterologists, as part of a nutritional and clinical follow-up program that maximizes results and supports the patient at every stage of the process.
What is the gastric balloon and when is it indicated?
The gastric balloon is a soft silicone device, inserted empty into the stomach via an endoscope (with no need for surgery or incisions) and then filled with saline solution or gas until it reaches the appropriate volume. This volume takes up part of the stomach space, reducing the amount of food needed to feel full.
It is especially recommended for people who:
- Have excess weight or obesity (generally with a BMI between 27 and 35, though the exact figure depends on medical assessment)
- Have already tried to lose weight through diet and exercise without sustained success
- Are not currently candidates for bariatric surgery, or prefer a less invasive approach
- Wish to prepare the body before bariatric surgery, reducing surgical risks associated with excess weight
- Are looking for additional support to start more lasting lifestyle changes
The gastric balloon is not suitable for everyone. Active inflammatory bowel disease, a large hiatal hernia, previous stomach surgeries, or certain psychiatric conditions may be contraindications for the procedure, which is why a prior medical assessment is essential.
How is the procedure performed at Clínica AEGER Prima?
Gastric balloon placement is performed via upper endoscopy, generally under light sedation, and takes approximately 20 to 30 minutes. The gastroenterologist inserts the deflated balloon through the mouth into the stomach, then fills it with sterile saline solution to the previously determined volume.
No incisions, stitches, or extended hospital stay are required — most patients return home the same day, after a short rest period.
The balloon remains in the stomach for a period usually ranging from 6 to 12 months, depending on the type of device used, and is then removed through a further simple endoscopic procedure.
Before placement, a full assessment consultation is carried out, in which the doctor reviews the patient’s medical history and any necessary additional tests (such as upper endoscopy and laboratory tests), and together with the patient defines the nutritional follow-up plan that accompanies the entire treatment.
What are the benefits of the gastric balloon?
Non-surgical procedure
No incisions, scars, or need for an extended hospital stay.
Fast recovery
Most patients resume daily activities within a few days.
Significant weight loss
Combined with an appropriate nutritional plan, it can contribute to meaningful weight loss in the first few months.
Reversible
Unlike bariatric surgery, the balloon is removed at the end of treatment, with no permanent changes to the stomach’s anatomy.
Support for lasting habit change:
Acts as a catalyst for adopting healthier, more sustainable eating habits long-term.
Multidisciplinary follow-up
At Clínica AEGER Prima, treatment is monitored by nutritionists and the clinical team, increasing the likelihood of lasting results.
Results vary from person to person and depend on factors such as adherence to the nutritional plan, level of physical activity, and each patient’s individual characteristics. No specific outcome can be guaranteed in advance.
What is assessed during the gastric balloon consultation?
01. General clinical assessment
The doctor reviews the patient’s complete medical history, including previous illnesses, past surgeries, and current medication, to confirm the procedure can be performed safely.
02. Patient goals and expectations
Weight loss goals and realistic expectations regarding outcomes are discussed, clarifying that the gastric balloon is a supporting tool rather than a standalone solution.
03. Additional tests
A prior upper endoscopy, laboratory tests, and in some cases nutritional or psychological assessment may be requested, to ensure the patient is a suitable candidate for treatment.
04. Defining the follow-up plan
A regular nutritional and clinical follow-up plan is established for the entire period the balloon remains in place, tailored to each patient’s specific needs.
Frequently Asked Questions about Gastric Balloon in Lisbon
Is the gastric balloon painful?
The placement procedure is performed under sedation, so there is no pain during the process. In the first few days after placement, it is common to feel nausea, a sense of fullness, or mild abdominal discomfort as the body adjusts to the device, symptoms that tend to ease progressively.
How long does gastric balloon treatment last?
The balloon remains in the stomach for a period usually ranging from 6 to 12 months, depending on the type of device used, and is then removed through an endoscopic procedure.
How much weight can be lost with the gastric balloon?
Weight loss varies significantly between patients and depends on adherence to the associated nutritional and exercise plan. The doctor and nutrition team will provide a realistic estimate, tailored to the individual case, throughout follow-up.
Does the gastric balloon require hospitalization?
No, in most cases. Both placement and removal are performed on an outpatient basis, with the patient returning home the same day.
Who cannot have a gastric balloon fitted?
People with certain conditions, such as active inflammatory bowel disease, a large hiatal hernia, previous stomach surgeries, or certain psychiatric conditions, may not be suitable candidates. This is assessed individually during the prior consultation.
What happens after the balloon is removed?
Nutritional follow-up should continue after removal, to reinforce the habits adopted during treatment and support long-term maintenance of the weight lost.
Is the gastric balloon safe?
It is considered a safe procedure when performed by experienced professionals in an appropriate clinical setting. As with any medical procedure, there are risks and possible side effects, which will be explained in detail during the assessment consultation, allowing for an informed decision.
What is evaluated before Gastric Balloon Placement?
Medical history and symptoms:
An analysis of health conditions, weight history, and previous weight loss attempts.
Physical examination:
A thorough assessment to ensure the procedure’s safety.
Diagnostic testing:
May include blood tests, endoscopy, and other evaluations to assess stomach health.
Psychological readiness
Discussion of dietary adjustments required before and after the procedure.
Nutritional guidance:
A discussion about dietary habits and guidance on pre- and post-surgery nutritional requirements.
Risk factors and preventive measures:
A detailed explanation of the procedure, potential complications, and the importance of follow-up care.
