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Aspiration therapy is a novel, endoscopic bariatric therapy that allows patients to remove a portion of an ingested meal through a modified percutaneous gastrostomy tube, called an A-Tube. Weight loss results from both fewer calories consumed, and from modifications in lifestyle and mealtime behaviors that patients make as a result of having the device installed. The first commercially available device for aspiration therapy, the AspireAssist (Aspire Bariatrics, King of Prussia, PA), was approved by the Food and Drug Administration in 2016 for weight loss for greater than 6 months duration in patients with a body mass index of 35-55. Multiple studies have demonstrated the effectiveness and safety of aspiration therapy, with low rates of adverse events related to the procedure, including no reported deaths, as well as no evidence of eating disorders developed during therapy. This chapter will describe our experience with aspiration therapy. We will describe how we select appropriate candidates for aspiration therapy, how we perform the procedure including a summary of the equipment used, and how we mitigate and manage complications of the procedure. This article will highlight the effectiveness of aspiration therapy as a novel and safe approach for weight loss in patients in obesity., (Copyright © 2020 Elsevier Inc. All rights reserved.)