If you are researching weight loss surgery, the choice between a gastric sleeve, a gastric bypass and a gastric balloon can feel overwhelming. Each one works differently, suits different people, and comes with different commitments. This guide explains them in plain language so you can understand your options, but please read the honest note first. None of these is the right choice for everyone, and which one suits you is a medical decision made with a specialist after proper assessment, never something to pick from a website.
Gastric sleeve
A gastric sleeve, or sleeve gastrectomy, removes a large part of the stomach so that a smaller, sleeve shaped stomach remains. You feel full sooner and eat less, and there are hormonal changes that can reduce appetite. It is a permanent change to your anatomy.
The sleeve is one of the most commonly performed weight loss procedures worldwide. It may suit people who need significant weight loss and are prepared for a permanent change and a new long term relationship with food.
Gastric bypass
A gastric bypass creates a small stomach pouch and reroutes part of the small intestine, so you both eat less and absorb fewer calories. It is also permanent, and it can be considered for people with more weight to lose or with certain conditions such as reflux, where a bypass may be preferred over a sleeve.
Because it changes how nutrients are absorbed, lifelong attention to vitamins and diet is especially important. A specialist will explain whether it is appropriate for you.
Gastric balloon
A gastric balloon is the least invasive of the three, and it is not surgery. A soft balloon is placed in the stomach and filled, so you feel full sooner, then it is removed after a set period. Because it is temporary, the results depend heavily on using that time to build lasting habits.
The balloon may suit people who want a non surgical option, or who have less weight to lose, and who understand that it is a tool to support change rather than a permanent solution.
The honest part
Weight loss surgery is a powerful tool, but it is a tool, not a cure. Long term results come from the combination of the procedure and lasting changes to how you eat and live, supported by follow up and, often, dietitian and psychological support. No responsible provider promises a guaranteed number on the scale, because results depend on your starting point, your health, the procedure and your aftercare.
Eligibility is decided by a doctor, based on your body mass index, your health history and other factors. That assessment is not a formality, it is how you stay safe.