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What are the reasons for regaining weight after bariatric surgery?
- Drinking liquid calories (although the stomach limits the volume of food that you eat, it doesn’t prevent you from being able to drink large amounts of calories),
- Not delaying your fluids from your solids (drinking and eating at the same time - only after surgery - appears to result in the rapid transit of the food you eat, in other words it “flushes” the food out of the stomach the same way flushing the toilet with water empties the bowl. This results in an empty stomach and a true physical hunger leading you to eat more. This is often confused with people thinking or feeling as if they have stretched their pouch),
- Grazing/Picking and nibbling (surgery operates on the stomach, not the mind, thus the reasons that may have lead some people to overeat before surgery may remain, such as emotional eating, stress eating, using food as a coping mechanism, etc.
Some other reasons for weight regain that are less common but still possible include:
- An enlarged gastric pouch
- A fistula
- Intestinal adaptation
- New medications that may induce weight gain (i.e. anti-depressants, some forms of chemotherapy, etc)
- A poorly controlled thyroid (synthroid doses need to be adjusted after rapid weight loss).
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