The aim of the present study was to investigate if rye grain structure influence perceived appetite. A comparison of whole rye kernels and milled rye kernels were done in two study parts. In the first part the rye was served as porridge breakfasts and in the second one milled and whole kernels were included into bread breakfasts. In order to observe potential effects that would arise when the remains of the meal reaches the colon, the period of measurement was set to 8 h after intake of iso-caloric rye bread and rye porridge breakfasts.