For most people the weight loss slows and stops around 12-24months post op, unless you work to keep it going. The malabsorption lessens over time as your body adapts and you gradually start to eat more as you adapt to your stomach post op. This isn't always at your target weight though, you might need to work to reach that, or reach it quickly and work to stop the weight loss, generally by increasing carbs and snacking.
For some people though, like me, you develop chronic malabsorption which means it is a life long battle to stop the weight loss, as your body doesn't adapt and you continue to absorb very little of what you eat. Early signs of this are reaching target quickly, having no stalls or gains, and sometimes passing target and reaching too low a BMI. It's estimated this affects 20% of bypass patients to some degree. Mine is quite severe, I've not met anyone else this bad. I have to aim for atleast 4000 cals a day to maintain.
Sent from my iPhone using Forum Runner