1 This condition is caused by malfunctioning of the stomach muscles; and is treated with medication to stimulate the muscles. 2  Celiac disease or gluten intolerance is another common digestive system disease. 3  It is a type of autoimmune disease that affects the small intestine.ommon Digestive Diseases. As mentioned above, the organs of the digestive system may develop different medical conditions. While some of them affect a particular organ or a part of that organ, some others affect more than one organ of the system.
Fish oil, omega-3: A class of fatty acids found in fish oils, especially from salmon and other cold-water fish, that acts to lower the levels of cholesterol and LDL (low-density lipoproteins) in the blood. Omega-3 fish oil is therefore thought to be a neutraceutical, a food that provides health benefits.
Flaxseed oil contains the essential fatty acid alpha-linolenic acid (ALA), which the body converts into eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), which is the omega-3 fatty acids found in fish oil.Some researchers think flaxseed oil might have some of the same benefits as fish oil.he benefits of ALA, EPA, and DHA are not necessarily the same. Omega-3 fatty acids, usually from fish oil, have been shown to reduce inflammation and help prevent certain chronic diseases, such as heart disease and arthritis. Studies are mixed about whether flaxseed oil is useful for the same conditions.