Non-Surgical Weight Loss Procedures: Every Option Explained

Have you been told your BMI is too low for bariatric surgery? Or maybe you simply don't want an operation. Either way, you're in good company.

Many adults with a BMI between 30 and 40 have already tried diets, apps and medication. What they want next is a medical option without incisions, scars or a hospital stay.

That's where non-surgical weight loss procedures come in. Some are done with an endoscope, a thin flexible tube passed through your mouth. One is as simple as swallowing a capsule in your doctor's office. Others you may have read about are no longer sold, or are still in clinical trials.

This guide puts every option in one place. You'll learn how each procedure works, what the clinical trials found, how long recovery takes and who usually qualifies.

We'll also be clear about status. A device that made headlines five years ago may not be available to you today, and you deserve to know that before you book anything.

What Counts as a Non-Surgical Weight Loss Procedure?

A non-surgical weight loss procedure changes how much your stomach holds or how fast it empties, without cutting through your skin. There are no incisions and no scars, and you usually go home the same day.

These procedures fall into three groups:

1. Endoscopic procedures

Your doctor passes an endoscope through your mouth into your stomach to place sutures or a device.

2. Swallowable devices

You swallow a capsule during an office visit, with no endoscopy and no anesthesia.

3. Investigational procedures

These are still being studied and aren't standard care in the US yet.

How is this different from bariatric surgery? Operations such as gastric sleeve or gastric bypass are done through small cuts in the abdomen under general anesthesia. Part of the stomach is removed or rerouted.

Non-surgical procedures leave your anatomy in place. That usually means a shorter recovery, and some options are temporary or reversible.

How To Measure Results?

You'll see two numbers in this guide. Total body weight loss (TBWL) is the share of your starting weight you lose. Excess weight loss (EWL) is the share of your extra weight you lose, above a BMI of 25.

A 10% TBWL for a 250-pound person means 25 pounds. If you want the math behind EWL, read our guide to the excess weight loss metric.

So which procedures are actually on the table in 2026? Let's start with the ones that reshape the stomach from the inside.

Endoscopic Weight Loss Procedures That Reduce the Stomach

These endoscopic weight loss procedures use sutures or tissue folds placed from inside your stomach to make it smaller. Nothing stays loose in your stomach, and the change is meant to last.

Endoscopic Sleeve Gastroplasty (ESG)

Endoscopic sleeve gastroplasty is the most studied procedure in this group. While you're under anesthesia, your doctor guides an endoscope with a suturing device into your stomach. A series of stitches folds the stomach into a narrower, sleeve-like tube.

The stomach holds far less food afterward, so you feel full on smaller portions. Food also moves through more slowly, which helps you stay full longer.

Here's how it typically goes:

1. Pre-procedure evaluation, including your health history and sometimes lab work or a diagnostic endoscopy.
2. The procedure itself, which usually takes about 60 to 90 minutes.
3. A short observation period, with most patients going home the same day or the next morning.
4. A staged diet over several weeks, moving from clear liquids to purees, then soft foods, then regular meals.
5. Ongoing nutrition and follow-up visits, often for a year or longer.

What do the results look like? The best evidence comes from the MERIT trial, published in The Lancet in 2022. It randomly assigned 209 adults with a BMI of 30 to 40 to ESG plus lifestyle changes or to lifestyle changes alone.

At one year, the ESG group lost an average of 13.6% of their total body weight, compared with 0.8% in the lifestyle-only group. At two years, 68% of ESG patients had kept off at least a quarter of their excess weight.

For a 230-pound person, 13.6% works out to about 31 pounds.

Most people return to desk work within a few days. Nausea, cramping and a sore throat are common in the first days and usually fade within a week.

ESG is generally offered to adults with a BMI of about 30 to 50 who haven't reached their goals with diet and exercise. Because the stomach isn't cut, ESG doesn't rule out other procedures later.

POSE and POSE 2.0

POSE stands for primary obesity surgery endoluminal, though no external surgery is involved. It uses an endoscopic platform to place a series of tissue folds, called plications, inside the stomach.

The original version focused on the upper part of the stomach. The newer POSE 2.0 places folds along the body of the stomach to shorten and narrow it, similar in goal to ESG.

POSE 2.0 is offered at fewer centers and has less long-term data than ESG. If a clinic recommends it, ask how many they've performed and what results their own patients have seen.

Endoscopic Revision After Bariatric Surgery

Some people regain weight years after gastric bypass or gastric sleeve surgery. Often because the stomach pouch or the opening between the stomach and intestine has stretched.

An endoscopic revision uses sutures to tighten that area again, without a second operation. For gastric bypass patients, this is often called transoral outlet reduction (TORe).

Recovery is similar to ESG. Revision works best when it's paired with the same nutrition support you'd get after any weight loss procedure.

But what if you'd prefer something temporary instead of a lasting change to your stomach's shape? That's where balloons come in.

Intragastric Balloons

An intragastric balloon is a soft balloon filled with saline that sits in your stomach for several months. It takes up space, so you feel full sooner and eat less at each meal.

Every balloon is temporary. That's both its strength and its limit: the balloon gives you a window to build new eating habits, and those habits decide what happens after it comes out.

Endoscopically Placed Balloons

With these balloons, your doctor places the deflated balloon through your mouth with an endoscope while you're under sedation, then fills it with saline. A second endoscopy removes it later.

Orbera

Placement takes about 20 to 30 minutes, and the balloon stays in for six months. It's FDA-approved for adults with a BMI of 30 to 40 who haven't lost weight with diet and exercise.

In its FDA trial, people with Orbera lost an average of 21.8 pounds, or 10.2% of their body weight, at six months. The comparison group, which got the same lifestyle program without a balloon, lost 3.3%.

Spatz3

This is the only adjustable balloon approved in the US. The FDA approved it in October 2021, and it can stay in place for up to eight months.

Your doctor can add saline if weight loss stalls, or remove some if you're struggling with nausea. In its pivotal trial, the Spatz3 group lost 15.0% of their baseline weight, compared with 3.3% in the control group.

The approved range for Spatz3 is a BMI of 35 to 40, or 30 to 34.9 with at least one major weight-related condition.

What's the first week like? Nausea, vomiting, stomach cramping and acid reflux are common in the first days as your body adjusts. Reflux can linger for weeks, and some people need reflux medication while the balloon is in. Most people are back to normal activities within a week. Serious complications, such as ulcers or early deflation, are uncommon but possible.

The Swallowable Balloon

The Allurion Gastric Balloon System is the newest option in the US. The FDA approved it in early 2026.

Here's what makes it different. You swallow a capsule attached to a thin tube during a short office visit, and the balloon is filled with fluid through that tube. There's no endoscopy and no anesthesia.

The balloon stays in your stomach for about four months. Then a release valve opens, the balloon empties and it passes naturally. You can have up to two balloons over a 10-month period.

It's approved for adults aged 22 to 65 with a BMI of 30 to 40 who have tried to lose weight before. In the AUDACITY trial of 550 participants, 58% of treated patients lost more than 5% of their body weight at 48 weeks. Serious adverse events occurred in 3.1% of patients.

After the Balloon Comes Out

There's plenty of advice about the first week with a balloon and very little about life after removal. The honest answer is that weight regain is common. A Dutch government review of gastric balloons found long-term results depended largely on how closely people kept up their diet and lifestyle changes after the balloon was gone.

What helps people hold on to their results:

• Keep follow-up visits going for at least six months after removal.
• Stick with the portion sizes you got used to, even when hunger returns.
• Agree on a next step with your doctor, such as medication, if the scale starts to climb.

Balloons and ESG are the options most clinics offer today. But you may have come across other names in your research, so let's look at where they stand.

Other Weight Loss Devices You May Have Heard Of

Several devices won FDA approval in the past decade but are hard or impossible to find today. If an article recommends one of these, check its publication date.

TransPyloric Shuttle

The FDA approved this device in 2019 for adults with a BMI of 30 to 40. It's placed with an endoscope and sits at the outlet of the stomach, slowing how fast food leaves.

It stays in for up to 12 months. In its trial, about 67% of patients lost at least 5% of their body weight. It never became widely available, so very few US clinics offer it.

AspireAssist

Approved in 2016 for adults with a BMI of 35 to 55, this device used a tube placed through the abdominal wall. After meals, patients drained about 30% of the stomach's contents.

The manufacturer withdrew it from the market in April 2022 for financial reasons, not because of safety problems. It's no longer an option.

Plenity

This capsule, taken before meals, contained a gel that expanded in the stomach to create fullness. It was cleared in 2019 for adults with a BMI of 25 to 40.

Its manufacturer filed for liquidation in October 2023, and the product is no longer available.

Emerging and Investigational Options

Researchers are testing several newer approaches. None of them is FDA-approved as a weight loss treatment in the US, so you'd only access them through a clinical trial.

Duodenal mucosal resurfacing

A catheter passed through an endoscope uses heat to renew the lining of the first part of the small intestine. It's being studied for type 2 diabetes and for keeping weight off after stopping GLP-1 medications.

Duodenal-jejunal bypass liner

A thin sleeve lines the upper small intestine so food passes by part of it without being absorbed. It's still investigational in the US.

Bariatric embolization

An interventional radiologist threads a catheter through a blood vessel in the wrist or groin. Tiny particles reduce blood flow to the part of the stomach that makes ghrelin, the hunger hormone. Studies so far are small.

Now that you've seen every option, how do they compare when you put them side by side?

Non-Surgical Weight Loss Procedures Compared

The table below covers the non-surgical weight loss procedures available in the US today. Keep in mind that each trial measured results a little differently, so treat these as a guide rather than a head-to-head ranking.

Each endoscopic option works a little differently. Here’s how they compare (TBWL = total body weight loss):

ESG (endoscopic sleeve gastroplasty)

• How it’s done: The stomach is reshaped with endoscopic sutures while you’re under anesthesia
• How long it lasts: Long term, since the sutures stay in place
• Key trial result: 13.6% TBWL at 1 year
• Recovery: A few days to a week
• Approved BMI range: About 30 to 50

POSE 2.0

• How it’s done: Tissue folds are created inside the stomach endoscopically, under anesthesia
• How long it lasts: Long term
• Key trial result: Based on smaller studies, with less long-term data so far
• Recovery: A few days to a week
• Approved BMI range: Varies by center

Orbera balloon

• How it’s done: Placed endoscopically while you’re sedated
• How long it lasts: 6 months
• Key trial result: 10.2% TBWL at 6 months
• Recovery: About a week of adjustment
• Approved BMI range: 30 to 40

Spatz3 balloon

• How it’s done: Placed endoscopically under sedation; its volume can be adjusted during treatment
• How long it lasts: Up to 8 months
• Key trial result: 15.0% weight loss in its pivotal trial
• Recovery: About a week of adjustment
• Approved BMI range: 35 to 40, or 30 to 34.9 with a related health condition

Allurion balloon

• How it’s done: Swallowed as a capsule during an office visit, with no endoscopy needed
• How long it lasts: About 4 months per balloon, with up to 2 balloons
• Key trial result: 58% of patients lost more than 5% of their body weight at 48 weeks
• Recovery: A few days of adjustment
• Approved BMI range: 30 to 40

One thing worth noting: the trials measured results differently (TBWL vs. share of patients reaching a goal) and over different timeframes, so the numbers aren’t a direct apples-to-apples comparison.

How to Choose the Right Procedure

The right choice depends less on which procedure is "best" and more on your body, your goals and your life. Work through these questions before your consultation:

1. What's your BMI and health history? Your BMI, past surgeries and conditions like reflux or a hiatal hernia narrow the list quickly.
2. Do you want a lasting change or a temporary tool? ESG changes the stomach's shape for the long term. Balloons are a time-limited head start.
3. How much time can you take off? A swallowable balloon needs the least downtime. ESG and endoscopic balloons need a few days to a week.
4. What does the aftercare program include? Every trial result above came with nutrition coaching and follow-up. Ask how long support lasts and who provides it.
5. Would medication help alongside the procedure? Some doctors combine a balloon or ESG with GLP-1 medication. Allurion reports about 14% average weight loss in patients treated outside the US, and over 20% when combined with low-dose GLP-1s. That's company-reported data, so discuss it with your doctor.
6. What will it cost? Most insurance plans don't cover these procedures yet. Ask for a full price that includes aftercare, and ask about payment plans.

Here's a question worth sitting with: if the procedure only gets you halfway, what support would you need to cover the rest of the distance?

The Right Way Is the One That Fits Your Life

Non-surgical weight loss procedures have moved well beyond a single balloon. Today you can choose between lasting endoscopic options like ESG, temporary balloons placed with an endoscope, and a balloon you simply swallow.

The numbers from the trials are real, but they all have one thing in common. Every result came with nutrition coaching and follow-up care. The procedure gives you a physical advantage; the habits you build during that time decide how long the results last.

So don't just ask which procedure loses the most weight. Ask which one fits your body, your schedule and the support you'll have afterward.

FAQ

What is the safest non-surgical weight loss procedure?

Every procedure carries some risk, and the safest one is the one that fits your health profile. Temporary balloons avoid permanent changes, and the swallowable balloon avoids endoscopy and anesthesia altogether. Your doctor's evaluation is what settles this, so bring your full health history to the consultation.

How much weight can you lose with a gastric balloon?

In FDA trials, Orbera patients lost about 10% of their body weight in six months, and Spatz3 patients lost about 15%. For a 200-pound person, that's roughly 20 to 30 pounds. The intragastric balloons section above covers each option in detail.

Am I a candidate for endoscopic sleeve gastroplasty?

You may be a candidate if your BMI is about 30 to 50 and diet and exercise haven't been enough. Certain stomach conditions or past surgeries may change the plan, so your doctor will review those first. See the ESG section above for what the procedure and recovery involve.

Are non-surgical weight loss procedures covered by insurance?

Most insurance plans don't cover them yet, so many patients pay out of pocket. Ask your clinic for an all-in price and about financing before you decide.

Can you combine a gastric balloon with GLP-1 medication?

Some doctors do combine the two, and early company-reported data suggests it can increase weight loss. Whether it's right for you depends on your health and goals, so raise it during your consultation.

Is a non-surgical weight loss procedure reversible?

Balloons are fully temporary: they're removed or pass naturally. ESG isn't designed to be reversed, but because the stomach isn't cut, other procedures remain possible later.

Can ESG stitches come loose over time?

Some do. In one study that checked 41 patients by endoscopy at 12 months, 24% had a fully intact sleeve, 59% a partly intact one and 17% had lost their sutures, and weight loss tracked how intact the sleeve was. If weight returns because the sleeve has loosened, a repeat ESG can tighten it again.

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