how to gain weight with Gerd

Try something with high protein like whey shakes, ensure, boost, slim fast.

Were they chocolate? Chocolate can burn you.

You should experiment with calorie-dense foods to see what works for you. I do very well with oatmeal, rice, chicken, and fish. I have significantly slowed -- but have not entirely eliminated -- my weight loss by eating just enough of those foods to trigger symptoms and stopping there. Like you, I'm still trying to figure out how to gain weight, but I've been able to slow my weight loss quite a bit (from one pound a week to one pound every two or three weeks) with the above diet. I have to start with a bowl of oatmeal first thing when I roll out of bed at 6 and keep eating every two or three hours until 7 at night. Obviously those specific foods may not work for you, but you need to experiment with high calorie foods until you find something that works.

That's impressive. I haven't been brave enough to try butter or french fries. I'm working with the theory that my problem is partially blood-sugar related, so I also haven't tried chocolate or candy.

Edit -- Like you, I'm staying off of gluten. The oatmeal I eat is gluten free. I don't know if it makes a difference. The nutritionist I see thinks that I have a slight wheat sensitivity. I'm a little skeptical myself. It seems too easy to say that any digestive problem can be traced or contributed to by a wheat sensitivity that I've never noticed in all of my 32 years. But I'm wheat free right now just in case.

You have it much worse than I do. My symptoms are not severe, and my weight is OK right now (6'2", 175). My concern is that I've been steadily dropping for nearly two months. I'm fine now, but I can't do this for a year.