Hello there, my sister had gastric bypass surgery about 3 years ago. She lost beautiful weight in the first year. She started gaining weight the next year. She continued to gain weight even though she went to dietitian control and tried various diets. She was already eating less, they tried even smaller portions with the dietician, she gained weight again. She can hardly eat anything now but still continues to gain weight. how is this problem solved? Has anyone had such a problem before, if it happened, and if ze was able to solve it, how could ze solve it?