The two similar names "fish oil" "cod liver oil", though only one word is missing, have thrown many people into a fog, they cannot tell the two things apart, mistakenly believe that they are the same thing.
This is because many people do have enough nutrition knowledge. (Simply put, they don't have careers related to the food industry nutritional sciences; they are completely laymen.) In fact, the two seem to be close relatives, but they are the same person. If you mistakenly eat cod liver oil as fish oil, it may affect your health. First, they come different sources.
Cod liver oil is a lipid extracted the liver of deep-sea fish. The source of fish oil is lipids extracted the fat of fish. It may come only the liver, but also other parts, such as the brain. Although both are fishy, oily liquids, they are equivalent.
Second, they differ in nutrient composition.
The main nutrients of cod liver oil are fat soluble vitamins A D. Fish oil includes three parts: body oil, liver oil brain oil. The main components of fish oil are triglyceride, phosphoglycerol ether, lipids, lipid-soluble vitamins protein degradation products. It is nutritionally different cod liver oil is rich in omega-3 polyunsaturated fatty acids, including eicosapentaenoic acid (EPA) docosahexaenoic acid (DHA). Finally, the price of cod liver oil fish oil also have a big difference, fish oil is known as "liquid gold", the price of fish oil is expensive, but the price of cod liver oil is relatively low.
To sum up, fish oil cod liver oil are fundamentally two different kinds of oil.
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