Cod Liver Oil FAQ: Answering 5 Questions about Cod Liver Oil

Publish DateAug 10, 2021

There is a lot to learn when exploring cod liver oil for the first time, so here is a list of FAQs to guide you in your decision-making.

What is Cod liver oil?

Cod liver oil, a buzzword in dietary supplements of the 22nd century, comes from the Atlantic – Liver of Atlantic cod.

What is the fundamental difference between cod liver oil and fish oil?

Cod liver oil comes from the fish’s liver, whereas fish oil comes from the fish’s skin. 

What is the nutritional profile of cod liver oil?

According to the United States Department of Agriculture (USDA), one teaspoon of cod liver oil (4.5 g) contains:




41 calories

Vitamin A

4,500 international units (IU)


Vitamin D

450 IU


Saturated fatty acids

1.017 g


Monounsaturated fatty acids

2.102 g

Polyunsaturated fatty acids

1.014 g



26 milligrams (mg)



What are the benefits of cod liver oil?               

A healthy heart

The omega-3 fatty acids available in cod liver oil helps in maintaining a healthy heart.

A group of studies has indicated its potential to reduce triglycerides, increase healthier HDL cholesterol, and manage blood pressure. Control of these components naturally reduces the risk of heart disease.


Further investigation of the preventive function of this might be needed. However, most diets recommend intake of this to prevent heart disease. 

A happy mind

Omega 3 is also a wonder nutrient when it comes to elevating your mood. In today’s hectic world, as we spiral in the whirlpool of work burden, depression as a topic has gained visibility due to frequent occurrences or may be due to the decrease in stigma. Whatever the reasons, the cod liver has proved to control anxiety in various clinical trials conducted over a short period. As the previous benefit, here too, more evidence is desired because the results of few other studies nullify this claim. 

A sharp memory

Several studies suggest a positive association between cod liver oil and cognition abilities. The omega-3 fatty acids in fish oil nourish brain health, improving cognition abilities.

Certain extensive cohort studies published by international journals such as the American Journal of Epidemiology reveals a lack of memory decline over time.

Are cod liver oil tablets good for you?

Many prefer capsules over a spoonful of cod liver oil due to its sheer convenience. You can also avoid the fishy after-taste with this.


Intake of cod liver oil in capsules has increased. Northern countries like Norway and Iceland are storehouses of cod liver oil.


Interesting fact: The use of cod liver for medicinal purposes has existed since 1789, and gradually, by 1930, it was common practice to prescribe this to children suffering from rickets or Vitamin D deficiency.

Author: Somrita Ganchoudhuri 

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