Weight Loss Procedures.?

What is a surical technique for weightloss? What digestive system structures are involved? How is the digestive system changed? Finally how are eating habbits and robustness of the subject is effected and what results can be expected?
Ive be searching for days but I cant seem to be to get these. If you are competent to answer, it would be greatly appreciated.Weight Loss Procedures.?
I'm not going to cut and paste an article I didn't write, so I'm attaching this connect:
http://www.mayoclinic.com/health/gastric...
It's not only a reliable source, it will probably answer basically about every put somebody through the mill you have.
Just my judgment... There's got to be a better method.
A metal band is put around the start of the stomach, reducing the amount of food that it can hold, this mechanism you must eat small portions, and discern full sooner.
It does work, but carries risks as adjectives surgeries do.
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