Bariatric Surgery

Bariatric surgery is an option for people who are severely obese and cannot lose weight by traditional means or who suffer from serious obesity-related health problems. The operation promotes weight loss and reduces the risk of type 2 diabetes by restricting food intake.

What is Bariatric Surgery?

Exercise and diet alone often fails to effectively treat people with extreme and excessive obesity. Bariatric surgery is an operation that is performed in order to help such individuals lose weight. Evidence suggests that bariatric surgery may lower death rates for patients with severe obesity, especially when coupled with healthy eating and lifestyle changes after surgery.

Taste Changes Following Bariatric Surgery

Diet After Bariatric Surgery

Bariatric Surgery Research

Metabolic Syndrome and Bariatric Surgery

Bariatric Surgery Types

Weight Loss After Bariatric Surgery

Bariatric Surgery Side Effects

Latest Bariatric Surgery News and Research

Study links GLP-1 treatment to fewer alcohol drinking days

Current GLP-1 receptor agonist prescriptions were associated with modestly lower AUDIT-C scores in a large, diverse US cohort. The difference appeared to reflect less frequent drinking rather than fewer drinks per occasion or fewer binge-drinking episodes.

13 Jul 2026

U.S. obesity rates rose sharply between 1999 and 2023

Obesity rates among U.S. adults and children rose sharply in recent years and by 2023, 40% of adults and 20% of youth met the criteria for obesity, according to new, independent research published today in the American Heart Association's flagship journal Circulation.

7 Jul 2026

Study links semaglutide and tirzepatide to fewer anxiety and depression diagnoses in obesity care

A US electronic health record study found that adults with obesity who started semaglutide or tirzepatide had lower recorded hazards of anxiety and depression than matched patients using naltrexone-bupropion. However, among adults without type 2 diabetes, tirzepatide was linked to higher recorded hazards of anxiety and insomnia than semaglutide, underscoring the need for cautious monitoring.

1 Jul 2026

Experts reframe steatotic liver disease as a dynamic continuum

The classification of steatotic liver disease (SLD) is undergoing a major conceptual transformation. In a recent article published in eGastroenterology, Dr. Chen, Dr. Horn, and Prof. Tacke from Charité - Universitätsmedizin Berlin argue that metabolic dysfunction-associated steatotic liver disease (MASLD), metabolic dysfunction and alcohol-associated liver disease (MetALD), and alcohol-associated liver disease (ALD) should not be regarded as rigid diagnostic categories, but rather as interconnected and evolving disease trajectories.

30 Jun 2026

Bariatric surgery linked to higher risk of developing alcohol problems

Your body absorbs alcohol much more rapidly after bariatric surgery. Patients need to know this when they choose the kind of surgery they will have.

25 Jun 2026

Lost weight is less likely to return when exercise follows obesity treatment

A systematic review and meta-analysis of 11 randomized controlled trials found that exercise during the post-weight-loss maintenance phase reduced weight regain by an average of 2.81 kg compared with control groups. Evidence for fat-mass reduction remained inconclusive, highlighting the need for longer, standardized trials with better adherence and body-composition monitoring.

24 Jun 2026

Experts outline a multidisciplinary approach to managing clinical obesity

The rapid rise of GLP-1 medications such as semaglutide and tirzepatide has transformed obesity treatment.

17 Jun 2026

Weight-loss surgery for obese teens found to be cost-effective over 10 years

Metabolic and bariatric surgery for teens with severe obesity was found to be cost-effective over 10 years, according to the new analysis from Ann & Robert H. Lurie Children's Hospital of Chicago published in JAMA Network Open.

15 Jun 2026

New clinical guidelines target interconnected heart, kidney and metabolic risks

The American Heart Association and the American College of Cardiology, along with two other leading medical organizations have developed the first-ever guideline aimed at preventing and managing cardiovascular-kidney-metabolic (CKM) syndrome, an interconnected set of health conditions that significantly increase the risk of multiorgan complications and negative cardiovascular outcomes.

9 Jun 2026

Expert review examines widely-held beliefs about dietary protein needs and benefits

A newly published peer-reviewed paper in Critical Reviews in Food Science and Nutrition synthesizes findings from a February 2025 scientific workshop.

8 Jun 2026

Fathers' health may shape children's future obesity ris

As obesity rates rise across the U.S., new research from Joe C. Wen School of Population & Public Health at the University of California, Irvine scientists draws attention to an often-overlooked factor in children's long-term health: fathers.

4 Jun 2026

Why exercise matters for obesity even when the scale barely moves

AHA's scientific statement reveals exercise's vital role in obesity management, boosting cardiovascular health and supporting long-term weight loss efforts.

4 Jun 2026

New stent design could improve treatment of gastric leaks

Each year, about 250,000 Americans undergo sleeve gastrectomy, one of the most common weight-loss operations in the United States. For most patients, recovery is uneventful.

3 Jun 2026

Could GLP-1 drugs help prevent breast cancer? New study points to a possible link

A large retrospective cohort study of 111,646 overweight or obese women found that GLP-1 agonist exposure was associated with lower breast cancer incidence. After propensity-score matching, GLP-1 exposure was linked to nearly 30% lower odds of breast cancer, but the authors stress that randomized trials are needed before these drugs can be considered for prevention.

3 Jun 2026

Whole-body PET scans track metabolic recovery after weight-loss surgery

A novel PET imaging framework reveals that bariatric surgery impacts not only body weight, but also the metabolic function of multiple organs.

1 Jun 2026

Bariatric surgery improves long-term ability to manage household tasks

People who undergo bariatric surgery and see substantial weight loss are better able to cope with household tasks such as cleaning, laundry and grocery shopping.

1 Jun 2026

Retatrutide reshapes metabolism in obesity and type 2 diabetes, study finds

Retatrutide altered circulating metabolites and lipids linked to fatty acid oxidation and insulin resistance in people with obesity, with or without type 2 diabetes. These biomarker changes suggest improved metabolic health, but the post-hoc analysis remains hypothesis-generating and does not prove direct clinical benefit.

26 May 2026

Researchers link surgical weight loss to reduced female cancer mortality rates

Substantial and sustained weight-loss has been linked to a reduced risk of cancer and cancer-related death, mainly in women. Two new studies now provide clues to why the risk is reduced - and suggest that gender, metabolism and genetics may play a crucial role.

25 May 2026

Semaglutide helps patients who gain weight after bariatric surgery

New UCL research supports use of the weight loss drug semaglutide for patients who do not get enough benefit from bariatric surgery.

22 May 2026

The role of gut bacteria in sustained diabetes improvement

Changes in gut microbiota after bariatric surgery are strongly linked to altered metabolic health and sustained improvement in type 2 diabetes, according to a study led by researchers at the University of Gothenburg.

7 May 2026