Gastric Bypass Surgery Support Group
Gastric bypass (GBP) is any of a group of similar operative procedures used to treat morbid obesity, a condition which arises from severe accumulation of excess weight in the form of fatty tissue, and the health problems ("co-morbidities") which result. If you are considering gastric bypass or have had it, join the community where we share our experiences and find support.
Anyhow, right now you're guessing at what you need. Normally, I'd say the hunger is because you're eating too many carbs. But I know from the meeting with my son, that runners need carbs. So I think it would be worth your time to sit down with someone who can help you plan things out. Obviously, you can stick to a plan. You just need a new plan.
Good luck!