It''s a little past five years since I've had a total Gastrectomy and at times I still suffer with dumping syndrome and reflux. Before the operation I was a healthy 140lbs weight, now I'm less than 126lbs. I've always lived a fit lifestyle and am presently running half an hour early each morning. I'll be 84 next month and I feel it's important I keep in good shape both mentally and physically as I live alone. I would like to gain some weight and understand why it is I have these unexpected bouts of burning in the day and nights.