Such food items are quickly broken down by the digestive system and are then eliminated smoothly. They also enhance the activity of digestive enzymes, thereby helping them to convert the complex molecules to simpler ones which can be excreted easily by your body.
List of Easily Digestible Foods
However, since we are restricting ourselves to the most easily digestible foods, only soluble fibers rich foods are preffered.
Complex ones increase blood glucose level and also take longer time for digestion. E.g. beans, legumes, nuts, and seeds.
Doctors also recommend moderate consumption of poly and monounsaturated fatty acids. Avoid lactose rich foods when you have digestion problems. One more important aspect is the fiber content of foods.