Diet in GERD/LPR is a quite tricky and complex topic, when you start reading what types of food and drinks should you avoid it can easily overwhelm you, because besides obviously unhealthy stuff there's also a lot of healthy stuff (including many vegatables and fruits) that you should avoid and a lot of "basic" things that many people will find hard to eliminate like chocolate, coffeine, milk, cheese, butter, pepper, mint and many, many more. The thing is that there are certain types of food and drinks that will most definitiely cause acid reflux in anyone with GERD/LPR, but there's also a lot of stuff that possibly could cause acid reflux, but you must check yourself if it's good for you or not. Personally in my diet I have heavily reduced stuff like whole milk, cheese, eggs, pepper, chocolate, onions, lemons, oranges, tomatoes (including ketchup), anything spicy or fried, soft drinks - at first avoiding all that stuff is burdensome, but with time you get used to it.