While all omega-3 fats possess immune-boosting qualities, omega-3 fats from fish oil, EPA and DHA, are more biologically potent than omega-3 fat ALA, found in plant sources such as flax seeds.
These fats have also been found, by many animal and clinical studies, to have anti-inflammatory properties, indicating that they might be beneficial to managing diseases such as coronary heart disease,depression and cancer. Omega-3 fats many also help with aging.
Clinical trials have also assessed the benefits of supplementing the diet with fish oils and results showed a decrease in diseases including rheumatoid arthritis, Crohn's disease, ulcerative colitis,psoriasis, lupus erythematosus, multiple sclerosis and migraineheadaches.
Journal American College Nutrition December 2002; 21(6):495-505