Gastric
Bypass Surgery
Gastric bypass
surgery combines reducing the size of the stomach
and also bypassing part of the small intestine.
The reduction in the size of the stomach means thats less
food is consumed and the bypassing of part of the small
intestine results in less food being absorbed into the
body.
After the Gastric bypass operation, weight is lost by
three mechanisms which work in combination with each other:
 The
size of the stomach is reduced which minimises
the size of meals that can be consumed. Persons feel satisfied
after a much smaller meal.
The
stomach usually empties into the top of the small intestine
where digestive enzymes start to digest the food
- After the gastric bypass, the food bypasses the top
part of the intestine to a place further down, reducing
the enzyme activity and thus reducing the number of calories
absorbed.
After
the gastric bypass when a person eats too much sugar,
the body is tricked by the sugar into releasing too much
of a hormone called insulin. This reduces blood sugar
levels, making the person feel light-headed and queasy.
This leads to a genuine distaste for the wrong
types of food and acts as a built-in mechanism to prevent
people over-eating the wrong types of food.
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