Supplementation of omega-3 fatty acids is very effective in reducing oxidative stress through the improvement of antioxidant enzymes activities . Fish and flaxseed oils are nutritional supplements have a high concentration of omega-3 fatty acids.Flax seed oil is rich in alpha linolenic acid (ALA) while fish oil is rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). In this study we aimed to compare the effects of flaxseed and fish oils in reducing oxidative stress especially in attenuating DNA damage through the evaluation of urinary 8-hydroxyguanosine (8-OHdG) in experimental...