Here in Finland everybody eats Rye-bread, nations favourite bread is dark rye bread. It is not necessarily whole grain but 50-100% made of rye. Anyways, I do eat it too. When I had severe blockage symptoms I avoided eating much, and even when I am doing fine I eat no more than 3-4 slices (normally just two) per day and only bread with no seeds or anything like that on it, no full-grain stuff! Grinded grain but made of rye. Make sure you dont eat too fresh rye bread it makes things worse. (Well I have never seen similar bread that what we have here so its hard to tell how processed or full of preservatives the bread is, ours is not) But I feel it keeps my stomach in better condition, much better than eating just white bread! Rye bread and oatmeal, thats my recommendation to start the day. I notice problems when I am traveling and forced to eat white bread, its not as good for me.