Surgeon Denis Halmi said in his OMA lecture in 2015 Washington DC that:
30% of patients regain the lost weight by 10 years post bariatric surgery.
Dr Denis Halmi in his lecture, Recidivism after Bariatric Surgery, states:
There are few large studies on revisional surgery results.
They are less effective than the primary surgery.
Some patients lose little weight.
Lap Band conversion to gastric bypass or sleeve gastrectomy has good results because of new hormonal effects.