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.

Bariatric Surgery Side Effects

Metabolic Syndrome and Bariatric Surgery

Taste Changes Following Bariatric Surgery

Weight Loss After Bariatric Surgery

Bariatric Surgery Types

Diet After Bariatric Surgery

Bariatric Surgery Research

Latest Bariatric Surgery News and Research

Weight loss wipes out senescent fat cells but leaves immune scars, study finds

Researchers have mapped human fat tissue at single-cell resolution, uncovering how obesity alters cellular stress, inflammation, and tissue structure. Weight loss reverses much of this damage, especially senescence in fat and vascular cells, but leaves some immune dysfunction behind.

10 Jul 2025

New study links social factors to racial disparities in weight loss surgery outcomes

Weight loss surgery has long been an effective treatment for the more than 40 percent of American adults struggling with obesity.

24 Jun 2025

Weight loss surgery leads to significant boost in self esteem

Self-esteem scores more than doubled within one year of weight-loss surgery, according to a new study* presented today at the American Society for Metabolic and Bariatric Surgery (ASMBS) 2025 Annual Scientific Meeting.

19 Jun 2025

Bariatric surgery linked to lower risk of psychiatric disorders than GLP-1 drugs

People who have metabolic and bariatric surgery are significantly less likely to develop psychiatric disorders compared to those who take weekly injections of GLP-1 anti-obesity medications, according to a new study presented today at the American Society for Metabolic and Bariatric Surgery (ASMBS) 2025 Annual Scientific Meeting.

17 Jun 2025

Bariatric surgery leads to greater weight loss than GLP-1 drugs after two years

Sleeve gastrectomy and gastric bypass were associated with about five-times more weight loss than weekly injections of GLP-1 receptor agonists semaglutide or tirzepatide, at the end of two years, according to a new head-to-head real-world study presented today at the American Society for Metabolic and Bariatric Surgery (ASMBS) 2025 Annual Scientific Meeting.

17 Jun 2025

Minor complication rates higher among Black patients after bariatric procedures

Black patients are more likely to experience minor complications after metabolic and bariatric surgery than White patients, according to new study presented today at the American Society for Metabolic and Bariatric Surgery 2025 Annual Scientific Meeting.

17 Jun 2025

Higher BMI linked to increased risk of complications after bariatric surgery

The higher a person's body mass index (BMI), the higher their risk for complications after bariatric surgery, especially those with BMI of 50 or more, according to a new study presented today at the American Society for Metabolic and Bariatric Surgery (ASMBS) 2025 Annual Scientific Meeting.

17 Jun 2025

AMA endorses resolution to expand access to anti-obesity medications

The American Medical Association (AMA) House of Delegates today passed the Endocrine Society's resolution to improve access to anti-obesity medications.

11 Jun 2025

Tufts researchers design new generation of weight loss medications

Weight loss drugs like Ozempic and Wegovy are used by over 15 million adults in the U.S., or 4.5% of the population. Despite their effectiveness, they have drawbacks.

11 Jun 2025

Fighting weight stigma is key to better mental health outcomes after weight loss surgery

New research shows that weight stigma-and not weight itself-has the biggest impact on mental health and healthy behaviors in the years after weight-loss surgery.

5 Jun 2025

Midlife weight loss may lower your long-term risk of diabetes, study finds

This study shows that midlife weight loss, without medical interventions, reduces chronic disease risk and supports longevity, beyond diabetes benefits.

29 May 2025

Trump won’t force Medicaid to cover GLP-1S for obesity. A few states are doing it anyway.

When Page Campbell's doctor recommended she try an injectable prescription drug called Wegovy to lose weight before scheduling bariatric surgery, she readily agreed.

21 May 2025

Study shows cardiovascular benefits of GLP-1RAs in patients following bariatric surgery

Medications like semaglutide and liraglutide may help to reduce the risk for heart attacks, strokes, and other major adverse cardiovascular events (MACE) as well as death in adults with obesity and diabetes following bariatric surgery who did not achieve sufficient weight loss and diabetes control, according to new research being presented at this year's European Congress on Obesity (ECO) in Malaga, Spain.

12 May 2025

GLP-1RAs show added protection against cancer beyond weight reduction

New research being presented at this year's European Congress on Obesity (ECO) in Malaga, Spain (11-14 May) and published in the journal eClinicalMedicine finds that first generation weight-loss medications like liraglutide and exenatide appear to show anti-cancer benefits beyond weight loss.

11 May 2025

Gastric bypass proven most effective for severe obesity in landmark study

Gastric bypass is the most clinically and cost effective form of interventional surgery for people living with severe obesity, reveals landmark research funded and supported by the National Institute for Health and Care Research (NIHR).

1 Apr 2025

Regaining some weight after bariatric surgery still offers health protection

Having lost a great deal of weight appears to offer some protection against ill health even for those who have regained some of their weight loss.

21 Mar 2025

Scientists uncover hints of a potential new cause of stomach cancer

For the first time, scientists have systematically analyzed somatic mutations in stomach lining tissue to unpick mutational processes, some of which can lead to cancer.

19 Mar 2025

Surgery first strategy could lead to better weight loss outcomes

Mass General Brigham researchers found that total weight loss did not increase for patients who took semaglutide before having weight loss surgery, suggesting that a surgery first strategy could lead to better outcomes.

5 Mar 2025

Europe sets new standards for obesity surgery medical tourism

Obesity surgery (also known as bariatric and metabolic surgery) is one of the most common reasons for people to do so called 'medical tourism' – where they travel to another country to have the procedure carried out at usually a much lower price than in their home country.

19 Feb 2025

Study examines how diet impacts gene expression in fat tissue

As many as 40% of Americans are obese, putting them at an increased risk for high blood pressure, diabetes, stroke, heart disease and certain cancers, according to the CDC.

8 Feb 2025