. >> lynnette trotman decided to have weight loss surgery after being diagnosed with blood pressure.> i with us so happy when i go to the doctor that the scale would be able to tell me my weight. >> reporter: she chose a procedure called gastric banding. doctors put an adjustable band around a apartment of the stomach. trotman thought banding was the safest option but three years later after complaining to her doctor, she had the band removed. >> i told her like, what is going on, you know. i'm not losing any weight, i'm gaining weight still. >> reporter: trotman's experience is not unusual. more than half who chose gastric banding were still obese after six years according to a new study in the archives of surgery. patients also had more long-term complications following surgery where doctors use staples to create a new pouch the study found those who had it lost weight more quickly and kept it off longer than those who had a band. the doctor says there's a reason why patients may have better results. >> when we remove parts of the stomach, we change the hunger that controls hunger

. >> reporter: lynette trotman decided to have weight loss surgery after being diagnosed with high blood >>> i was so heavy no scale could tell me my weight. >> reporter: she chose gastric banding doctors put a band around part of the somic limiting how much she could eat. she thought it was the safest option but three years later after complaining to her doctor she had the band removed. >> i told her, like what is going on you know, i am not losing any weight i am gaining weight still. >> reporter: her experience is not unusual, nearly half of patients who chose gastric banding were still obese after six years according to a new study in archives of surgery. patients had more long term complications and follow up operations than those with gastric bypass where doctors use staples to create a small stomach pouch. the study found those who had gastric by hass lost weight more quickly and kept it off longer than the bands. there is a reason bypass patients may have better results. >> when we remove parts of the stomach we change hormones that control hunger and fullness and really change p