I was 63 at time of my bypass surgery 3 years ago last May. I lost 150 pounds in about 18 months. I have regained 30. But have leveled off. I am restarting my liquid diet to restart weight loss. I feel great most days however I still have an occasional dumping.
All in all I would have it done again if I knew all of this. Wish I had it done decades earlier though.