Fish oil has an important application in the animal feed industry (poultry & aquaculture) where it is known to enhance growth, feed conservation rate (FCR) and increased resistance to diseases. Fish oil has been studied for treating clinical depression, anxiety, and enhancing the benefits from depression medications. We must be careful to see that we take in only natural fish oil vitamins instead of synthetic ones to guard against vitamin toxicity. Taking a balanced diet with just the right amount of fish oil vitamins will keep our bodies fit.