I was diagnosed with GERD last year. I did not want to take pills so I first cut out everything on the "usual trigger" list: alcohol, caffeine, onions, garlic, chocolate, spices, fatty meat, citrus, tomatoes, etc. I also cut out grains and dairy in case it was an intolerance issue. This left me with a very simple diet of lean meat, fruit and vegetables. I ate only small meals, chewing everything to bits. I quit eating in the evening, and got a wedge pillow. Although it wasn't my goal, on this regime I lost 25 pounds in a couple of months. This put me in extremely trim form. However, while the GERD improved, it was not totally gone. So I spent some time testing my reaction to individual foods. People use rotation diets for this - you eat a lot of something one day, then eat it again, by itself, 4-5 days later and see what happens. I was able to add back some of the things I had eliminated, like grains and dairy. I also identified a few foods that really put the hurt on me, and that I would not have suspected if I was just eating them in combination with other foods in the course of a meal. Like banana and green grapes. I also find it very helpful to cook the hell out of some vegetables, like carrots and celery, and to avoid food with hard edges, like popcorn.