Our expert says:
It is quite a drastic operation. The most obvious effect of the removal of the stomach is the loss of a storage place for food while it is being digested. Since only a small amount of food can be allowed into the small intestine at a time, you will have to eat small amounts of food regularly in order to prevent gastric dumping syndrome (diarrhoea and sweating when eating).
Another major effect is the loss of the intrinsic factor secreting cells in the stomach lining. Intrinsic factor is essential for the uptake of vitamin B12 and without it you will suffer from a vitamin B12 deficiency. This can lead to a type of anemia known as pernicious anemia which severely reduces forming of red-blood cell. This can be treated by direct injections of vitamin B12 on a regular basis.
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