Get Your Free Guide To Gastric Balloon Options

What Is a Gastric Balloon and How Does It Work?

A gastric balloon is a medical device placed inside the stomach to help with weight management. The device is a soft, deflated balloon made of silicone that a doctor inserts through the mouth and into the stomach using an endoscope—a thin, flexible tube with a camera on the end. Once in place, the balloon is filled with a sterile saline solution, which causes it to expand to about the size of a grapefruit. The balloon takes up space in the stomach, which can help a person feel fuller faster when eating smaller portions.

The procedure to place a gastric balloon typically takes 15 to 20 minutes and does not require surgical cuts. Most people receive sedation to make the process more comfortable. After the balloon is inserted, patients usually stay in recovery for a couple of hours before going home the same day. The balloon remains in the stomach for a set period, typically six months, though some types may stay for different lengths of time. During this time, the balloon cannot be seen or felt from the outside, and it does not interfere with normal daily activities once a person adjusts to having it.

The way a gastric balloon works is straightforward: by occupying space in the stomach, it reduces the amount of food a person can comfortably eat at one time. This physical limitation, combined with lifestyle changes like eating smaller meals and choosing healthier foods, may lead to weight loss over the months the balloon is in place. The balloon does not absorb nutrients or change how the body digests food—it simply makes the stomach feel full sooner. Research has shown that people using gastric balloons often lose a meaningful amount of weight while the device is in place, though individual results vary based on factors like diet, exercise, and personal metabolism.

Practical Takeaway: Understanding how a gastric balloon functions—as a space-occupying device rather than a surgical implant—helps clarify what to expect during placement and use. The procedure is non-surgical and reversible, which distinguishes it from other weight-management options.

Types of Gastric Balloons Available

Several different gastric balloon options exist, and they vary in design, fill material, duration of use, and how they are placed or removed. The most common type is the saline-filled balloon, which is filled with sterile saltwater after placement in the stomach. These balloons are typically left in place for six months. Another option is the gas-filled balloon, which uses air instead of liquid. Gas-filled balloons may feel lighter in the stomach for some people and have different removal procedures. Some newer balloon systems use a capsule that can be swallowed without endoscopy, reducing the need for sedation during placement.

Single-balloon systems place one large balloon in the stomach, while dual-balloon systems use two smaller balloons. The dual-balloon design may reduce the risk of the balloon moving out of position or deflating without being noticed. Some gastric balloons are designed to be in place for shorter periods, such as three months, while others may remain for up to one year. The choice of which type to use depends on several factors, including a person's medical history, the recommendation of their doctor, and which options are available at their treatment facility.

Another important distinction is between intragastric balloons, which sit freely inside the stomach, and endoscopic balloons, which are placed using different techniques. Some newer systems use a catheter-based approach, while others rely on traditional endoscopy. The "swallowable" balloon is a recent innovation that comes in a capsule attached to a thin tube. A person swallows the capsule, which is then filled with gas once it reaches the stomach, and the tube is removed. This approach eliminates the need for endoscopy but requires good swallowing ability and careful patient selection.

Practical Takeaway: Learning about the different balloon types helps you understand what options your doctor might discuss with you. Each type has different placement methods, duration, and characteristics that may make one option more suitable than another based on individual circumstances.

What to Expect Before, During, and After Balloon Placement

Before having a gastric balloon placed, a person typically meets with their doctor for a consultation and physical examination. The doctor reviews medical history and current medications to ensure the balloon is appropriate. Some patients may have blood tests or imaging studies done beforehand. A person usually receives instructions to avoid food and drink for several hours before the procedure, similar to preparing for other medical procedures. The doctor explains what will happen during the placement and answers any questions about what to expect. It is important to discuss any allergies, medications, or previous reactions to anesthesia with the medical team.

During the procedure, the person lies on their side or back and receives sedation to help them relax and not feel discomfort. The doctor gently passes the endoscope through the mouth and into the stomach. Using the camera on the endoscope, the doctor guides the deflated balloon into position. The balloon is then filled with saline solution through a catheter, and once fully inflated, the catheter and endoscope are carefully removed. The entire process usually takes 15 to 20 minutes. Most people do not remember much about the procedure because of the sedation. Some mild nausea or sore throat may occur immediately after, but this typically resolves within a day or two.

After the balloon is placed, a person usually goes home the same day but may need someone to drive them because of the sedation. The first few days may involve mild discomfort, nausea, or a feeling of fullness. Many doctors recommend eating soft, bland foods and drinking plenty of water in the days following placement. Most people adjust to the balloon within one to two weeks. During the months the balloon is in place, a person visits their doctor for follow-up appointments to monitor progress and address any concerns. When it is time to remove the balloon—typically after six months—the doctor uses endoscopy again to deflate the balloon, break it apart, and remove it in pieces. Removal also takes about 15 to 20 minutes and is performed with sedation.

Practical Takeaway: Knowing the timeline and what happens at each stage—before, during, and after—helps a person prepare mentally and physically for the procedure and understand what adjustments may be needed during recovery.

Who Might Consider a Gastric Balloon

Gastric balloons are generally considered for people who have tried other methods to manage their weight but have not achieved the results they wanted. A person typically has a Body Mass Index (BMI) in a certain range—often between 27 and 40—though this varies by doctor and individual circumstance. Unlike surgical weight-loss procedures, gastric balloons do not require permanent changes to the stomach's anatomy, which makes them an option for some people who prefer a reversible approach or who may not be candidates for surgery.

A gastric balloon may be considered for a person who wants additional support beyond diet and exercise alone. Some people use a balloon as a stepping stone toward developing long-term healthy eating habits. Others explore a balloon when they have health conditions related to weight—such as type 2 diabetes, high blood pressure, or joint pain—and want to lose weight to improve these conditions. People who have tried medications for weight management without satisfactory results may also explore this option. A person considering a gastric balloon should be motivated to make dietary changes and commit to working with their medical team throughout the treatment period.

Certain medical conditions or situations may make a gastric balloon less suitable. For example, people with active ulcers, severe gastric reflux, or previous stomach surgery may not be good candidates. Pregnant people or those planning to become pregnant soon would typically wait, as would people with certain types of hernias or digestive disorders. A doctor evaluates each person's individual health situation to determine whether a balloon is appropriate. It is important to be honest with your doctor about your medical history, current medications, and any concerns, as this information helps them make the best recommendation for your specific situation.

Practical Takeaway: A gastric balloon is one tool among many options for weight management. Understanding the general characteristics of people who consider this option can help you think about whether exploring it further with your doctor makes sense for your individual circumstances.

Lifestyle Changes and Support During Balloon Treatment

Having a gastric balloon in place is only part of the weight-management process. The balloon works best when combined with intentional changes to eating habits and activity level. Most people with a balloon work with a dietitian or nutritionist who teaches them about portion sizes, food choices, and eating patterns.