Harefuah
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100 patients were followed for 6-9 years after Roux-en-Y gastric bypass for morbid obesity. They were randomly selected from 600 patients operated on between 1980-85. ⋯ Longer follow-up of 6-9 years showed weight gain, with 24% having become morbidly obese again, 74% having lost more than 50% of their excess weight and only 7% having lost all their excess weight. We conclude that Roux-en-Y gastric bypass induces long term weight loss and largely prevents return of morbid obesity, as long as 6-9 years after surgery.