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Cod liver oil and fish oil are two different health supplements. They come from different fish sources and have unique benefits. Generally speaking, though, cod liver oil is a specific type of fish oil.

The health benefits of both fish oil and cod liver oil come from their high levels of omega-3 fatty acids. Omega-3 fatty acids support many body systems and may prevent a number of ailments. The human body can’t make its own omega-3 fatty acids, which is why you need to include them in your diet.