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  • Q&A with Australian Health Practitioners

    How do weight loss surgeries work?


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    Dr Steven Leibman

    Bariatric (Obesity) Surgeon, General Surgeon, Laparoscopic Surgeon, Upper GI Surgeon (Abdominal)

    Dr Leibman is a general, upper gastrointestinal and bariatric (weight loss) surgeon. Dr Leibman's surgical interests include surgery for gallstone disease, hernias, gastro-oesophageal reflux disease, … View Profile

    All weight loss operations essentially attempt to address a combination of food choices and portion size and are designed to work in conjunction with lifestyle changes. Portion size is altered by restrictive operations that either artificially (gastric band) or actually (sleeve or bypass) reduce the capacity of the stomach. The food choice and hunger components are biologically driven due to change in hormonal communications between the gastrointestinal tract, the stored fat and muscle cells, the brain, and the digestive organs such as the liver and pancreas.

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