Avocados are relatively easy for the body to digest, with a couple of important caveats.
Avocados have a very low glycemic index, in fact one of the lowest among all fruits, and therefore it does not tax the body’s ability to maintain proper blood sugar levels during digestion. This is a very good thing.
Avocados do have a very high monounsaturated fat content, however, with over 80% of their calories coming from fat. The digestive process for fats is longer than carbohydrates, but this leads to the positive effect of keeping the appetites satiated for a long period of time.
Avocados also contain a very high amounts of insoluble fiber, which is not able to be processed by the digestive system. This means that this insoluble fiber must pass through the bowels, and therefore helps to relieve constipation.
Most people do not find avocados difficult to digest, but if you find that you are having difficulty, try eating a smaller portion and gradually increase it as your body becomes acclimated to its high fiber and fat content.