Fish Oil

Fish oil is oil derived from the tissues of oily fish. Fish oils contain the omega-3 fatty acidseicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), precursors ofeicosanoids that are known to reduce inflammation throughout the body,[1][2] and are thought to have many health benefits.[3]                                                                                                                                  

Fish do not actually produce omega-3 fatty acids, but instead accumulate them from either consuming microalgae that produce these fatty acids, as is the case with fish, likeherring and sardines, or, as is the case with fatty predatory fish, by eating prey fish that have accumulated omega-3 fatty acids from microalgae. Such fatty predatory fish likesharksword fishtilefish, and albacore tuna may be high in omega-3 fatty acids, but due to their position at the top of the food chain, these species can accumulate toxicsubstances (see biomagnification). For this reason, the U.S. Food and Drug Administration recommends limiting consumption of certain (predatory) fish species (e.g. albacore tunasharkking mackereltilefish and swordfish) due to high levels of toxic contaminants such as mercurydioxinPCBs and chlordane.[4] Fish oil is used as a component inaquaculture feed. More than 50 percent of the world’s fish oil used in aquaculture feed is fed to farmed salmon.[5]

Fish oil has been studied for treating clinical depression,[6][7] anxiety,[8][9] and enhancing the benefits from depression medications.[10] Countries with the highest intake of fish in their diets are correlated with the lowest rates of depression among citizens.[11]

 

{Information courtesy Wikipedia}