Why can't cod liver oil be taken for a long time? What is the difference between cod liver oil and deep sea fish oil?

Cod liver oil is a nutritional supplement. Generally, it can supplement nutrition for infants and the elderly, especially for presbyopia. However, it cannot be taken for a long time. So, why can't cod liver oil be taken for a long time? What is the difference between cod liver oil and deep sea fish oil?

Why can't you take cod liver oil for a long time?

All medicines are poisonous to some extent. Similarly, taking too many nutritional supplements may cause nutritional imbalance in the body and lead to some uncomfortable symptoms, so it is generally recommended to take them intermittently.

The cod liver oil that cannot be taken for a long time refers to the synthetic medicine cod liver oil such as Icoxin and Beteling, because long-term consumption will cause toxic side effects. However, health food cod liver oil such as Hong Kong Yawei cod liver oil can be taken for a long time without causing any side effects.

What is the difference between cod liver oil and deep sea fish oil

Deep-sea fish oil is a very popular health product nowadays. As the name implies, deep-sea fish oil is unsaturated fat extracted from deep-sea fish and contains two components: EPA and DHA. The role of EPA is to help keep blood vessels unobstructed, prevent blood clots, and prevent stroke or myocardial infarction; remove fat accumulated in the blood, prevent arteriosclerosis and prevent the occurrence of peripheral blood vessel blockage. DHA-Brain Health: DHA is an indispensable material basis for the formation, development and operation of brain cells. It can promote and coordinate the conduction of neural circuits to maintain the normal operation of brain cells. Supplementing DHA in the elderly can help activate thinking and prevent Alzheimer's disease.

The main active ingredients of cod liver oil are vitamin A and vitamin D, which help the normal development of bones and teeth and protect healthy eye vision. It is often used to prevent and treat night blindness, rickets, and tetany in children.

The main active ingredients of shark liver oil are squalene and alkoxyglycerol, which help improve the body's tolerance to hypoxia, improve cardiovascular and cerebrovascular function, enhance the activity of the immune system, and also have anti-cancer effects.

There are many fish oil products on the market. When purchasing, you can use the origin, ingredients, and content on the label as a basis to distinguish the different effects of different products and eat for a healthy body.

How to choose cod liver oil

There are two types of cod liver oil preparations. One is an old preparation that has been used for many years. The ratio of vitamin A to D is 10:1, that is, each milliliter of concentrated cod liver oil contains 50,000 units of vitamin A and 5,000 units of vitamin D. Children need 1,000 to 1,500 units of vitamin A and 400 units of vitamin D every day, and the ratio of the two is 3 to 4:1. If this old preparation of concentrated cod liver oil is used to prevent rickets, and the baby is given 3 drops of cod liver oil every day, that is, 400 to 500 units of vitamin D, but 5,000 units of vitamin A, which is 4 to 5 times the required amount of vitamin A, vitamin A poisoning may occur over time. To overcome the drawbacks of this preparation, half a vial of injectable vitamin D3 (150,000 units) can be added to each bottle of cod liver oil, and the ratio of vitamin A to D can be adjusted to 3:1. Taking one drop of this mixed preparation daily can provide 1,600 units of vitamin A and 600 units of vitamin D, which can prevent rickets without causing vitamin A poisoning.

Another type of concentrated cod liver oil is a newly produced new preparation with a vitamin A:D ratio of 3:1. To prevent rickets, feeding the child 4 drops a day is equivalent to taking in 1200 units of vitamin A and 400 units of vitamin D, which can meet the infant's daily vitamin D requirement without causing vitamin A poisoning. Therefore, parents should buy a new preparation with a vitamin A:D ratio of 3:1 for their children.