Bariatric surgery is a surgical methodology and a significant area of clinical research concerned with procedures designed to induce substantial weight loss and ameliorate metabolic dysfunction in individuals affected by severe obesity. This academic concept encompasses the investigation of diverse surgical techniques, their physiological impacts on energy balance and metabolism, clinical outcomes, long-term complications, and the multidisciplinary management strategies associated with these interventions, representing a critical field in the treatment of obesity and related comorbidities.