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What happens to the lower part of the stomach that is bypassed during gastric bypass surgery?

April 26, 2017bypass bypassed Gastric happens lower Stomach surgery

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What happens to the lower part of the stomach that is bypassed during gastric bypass surgery?

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Typically, the stomach is left in place with intact blood supply. In some cases it may shrink a bit and its lining (the mucosa) may atrophy, but for the most part it remains unchanged. The lower stomach still contributes to the function of the intestines even though it does not receive or process food – it is necessary to absorb Vitamin B12 and contributes to hormone balance and motility of the intestines in ways that are not entirely known.