An instructional activity to watch a video that describes two different types of bariatric surgeries in order to learn more about these weight-reduction procedures.

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Bariatric surgery is a category of weight-reduction surgical procedures recommended for individuals for whom repeated attempts to lose weight have been unsuccessful, or for those whose obesity poses a direct risk of death. It involves altering the gastrointestinal system to either reduce the volume of food that can be consumed or limit the body's ability to absorb digested food. Studies indicate it is more effective than non-surgical treatments in the short term (two years post-procedure), though long-term studies are still needed.

Bariatric Surgery

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

Gastric banding is a type of bariatric surgery where a band is placed around the upper portion of the stomach, creating a small pouch. This pouch restricts food intake by filling up quickly. Digested food then moves from the esophagus into this small pouch, through the rest of the stomach, and finally into the duodenum.

Gastric Banding Surgery

Analyze the two primary physiological mechanisms by which surgical procedures for significant weight loss alter the gastrointestinal system. For each mechanism, describe how it functions and explain the process through which it leads to a reduction in body weight.

Mechanisms of Surgical Weight Reduction

Based on the patient's post-operative experience described in the case study, which of the two primary mechanisms of weight-reduction surgery was most likely employed? Justify your answer by connecting the patient's outcome to the underlying physiological change.

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