A UK TV programme this week tended to support Narakmak on this one. The surgery was shown being performed on a boy of 18 or so who was over 300 lbs in weight.
The doctors seemed to have little hesitation in going ahead fitting a gastric band once they had confirmed that all his other attempted weight loss methods had failed. Surgery was of the keyhole variety and it seemed a quite straightforward technique. A typical "meal" thereafter was about 3 teaspoons in volume!
Weirdly, though, when the cameras went back to look at the boy after a few months, it was hard to detect any obvious weight loss ( I think they said it was about 30 lbs, which seems comparatively little after only existing on a few teaspoons of food a day).
"The fruits of peace and tranquility... are the greatest goods... while those of its opposite, strife, are unbearable evils. Hence we ought to wish for peace, to seek it if we do not already have it, to conserve it once it is attained, and to repel with all our strength the strife which is opposed to it. To this end individual[s]... and in even greater degree groups and communities are obliged to help one another... from the bond or law of human society." [Marsilio dei Mainardini (c.1275-1342), Defensor Pacis]