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.

Diet After Bariatric Surgery

Bariatric Surgery Types

Metabolic Syndrome and Bariatric Surgery

Weight Loss After Bariatric Surgery

Bariatric Surgery Side Effects

Taste Changes Following Bariatric Surgery

Bariatric Surgery Research

Latest Bariatric Surgery News and Research

Patients face vitamin deficiencies years after bariatric surgery

A review reveals dangerous vitamin deficiencies post-bariatric surgery, highlighting the need for improved follow-up to prevent life-threatening complications.

30 Jul 2025

Canadian scientists trap gut microbe fuel to improve blood sugar and liver health

A team of Canadian scientists has discovered a surprising new way to improve blood sugar levels and reduce liver damage: by trapping a little-known fuel made by gut bacteria before they wreak havoc on the body.

30 Jul 2025

What happens to your weight after quitting GLP-1 anti-obesity drugs?

Stopping anti-obesity medications leads to significant weight regain, starting as early as eight weeks and stabilizing by six months. Despite this rebound, most patients maintain some weight loss compared to baseline a year after discontinuation.

23 Jul 2025

Chinese study shows lasting weight loss after tirzepatide treatment

Obesity has become a global epidemic, contributing to a host of chronic health conditions such as type 2 diabetes, hypertension, and cardiovascular disease.

23 Jul 2025

Polygenic scores show promise for early obesity prevention

New genetic research reveals polygenic scores can predict obesity risk, offering early prevention insights while raising ethical healthcare access concerns.

23 Jul 2025

Weight regain observed in patients after ending obesity drug treatment

Patients prescribed drugs to help them lose weight may experience a rebound in weight gain after halting their prescription, finds a meta-analysis published in BMC Medicine.

22 Jul 2025

Experts highlight urgent need to regulate bariatric and metabolic surgery medical tourism

Medical tourism for bariatric and weight reduction surgery needs urgent regulation to protect recipients' health, especially as the data show that tourist numbers are increasing despite the advent of weight loss drugs, say experts in a commentary published online in BMJ Global Health.

16 Jul 2025

Extracellular vesicle RNA reveals clues about obesity and metabolic disease

Our study examines how RNA in extracellular vesicles (EVs) can provide insights into metabolic phenotypes related to obesity. By using functional genomics approaches, we found a high representation of genes and regulatory elements previously associated with obesity and type 2 diabetes represented by the RNA cargo within these EVs.

15 Jul 2025

Weight loss drugs can boost testosterone in men with obesity or diabetes

Anti-obesity medications can significantly raise testosterone levels and improve health outcomes for men with obesity or type 2 diabetes, according to a new study being presented Monday at ENDO 2025, the Endocrine Society's annual meeting in San Francisco, Calif.

14 Jul 2025

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