Research

Hormonal

Bariatric surgery (specifically Roux-en-Y gastric bypass) is the only current obesity treatment effective for long-term weight loss and resolution of comorbidities, whereas non-surgical lifestyle and pharmacological interventions typically produce modest, poorly sustained weight loss.

If you have severe obesity, lifestyle changes and current medications rarely lead to lasting weight loss. Bariatric surgery is currently the only intervention proven to sustain significant weight loss and resolve related health issues long-term. Discuss surgical options with a specialist if you qualify, as non-surgical methods often fail to maintain results.

StrongSupportsHIGH confidence
bariatric–metabolic surgery is the only current treatment for obesity that is effective in the long term. Lifestyle modification and current pharmacological approaches are generally associated with modest (average 5 kg) weight loss that is poorly sustained in a majority of patients.
Andrés Acosta et al. · Gut · 2014

Why this rating

Supported by large prospective studies (Swedish Obese Subjects Trial) and meta-analyses of 136 studies.

Source

Recent advances in clinical practice challenges and opportunities in the management of obesity

Andrés Acosta et al. · Gut · 2014

DOI 10.1136/gutjnl-2013-306235

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DOI resolved against Crossref · corpus check 2026-06-10

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