This article is for informational purposes only and should not be considered medical advice. Please consult a qualified healthcare professional for personalized guidance and treatment.

What is a weight loss balloon?

A weight loss balloon is an intragastric device designed to occupy space in the stomach and alter sensations of hunger and fullness. It does not require major surgery in most cases; many systems are placed and removed using minimally invasive endoscopy under sedation. The balloon remains in place for a defined period—commonly several months—after which it is removed. It is prescribed alongside structured programmes for diet, exercise, and behavioural support to improve the chance of sustained weight change.

How does a stomach balloon work?

A stomach balloon works by reducing the functional volume of the stomach and often slowing gastric emptying, which can lower appetite and help patients eat smaller portions. The balloon’s presence may change hunger signals and portion control, supporting learning of new eating habits during the treatment window. Different balloons use saline (fluid) or gas to inflate, and their physical properties influence how they sit and move in the stomach. Effects depend on individual physiology and adherence to the accompanying lifestyle programme.

Who is a medical candidate for the balloon?

Medical candidacy varies by programme and device. Many clinics consider adults with obesity who have not achieved sufficient weight loss through diet and exercise alone. Typical eligibility criteria often include body mass index (BMI) ranges—clinics commonly evaluate people with BMIs around 30–40 kg/m2 or those with lower BMI and weight-related health issues—but exact thresholds differ. A thorough medical assessment screens for contraindications such as previous major gastric surgery, large hiatal hernia, active gastrointestinal disease, or certain clotting/medical conditions.

What does the balloon procedure involve?

The procedure usually begins with a medical consultation and pre-procedure testing. For endoscopic systems, a clinician places the deflated balloon into the stomach during a short sedated procedure and then inflates it with saline or gas. Some balloon types are designed to be swallowed as a capsule and inflated after confirmation of stomach placement. Patients are monitored for a short period after placement and given instructions for medication and diet progression. Removal is typically another endoscopic procedure performed after the intended treatment duration.

What are risks and aftercare considerations?

Common short-term effects include nausea, vomiting, and abdominal discomfort as the body adapts to the balloon; these symptoms often resolve within days to weeks. More serious, less common risks include balloon deflation with potential migration, gastric ulceration, obstruction, or the need for early removal. Aftercare commonly involves follow-up visits, nutritional counselling, and activity planning to consolidate behaviour changes. Long-term success depends heavily on continuing lifestyle modifications after balloon removal; without this, weight regain is possible.

Conclusion

The weight loss balloon is a temporary, medical intervention intended to support dietary and behavioural changes by limiting stomach volume and altering satiety signals. It is one option among several for people seeking medically supervised weight management. Decisions about candidacy, device type, and expected outcomes should be made with a qualified healthcare team that can assess individual risks, benefits, and alternative treatments.