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cod liver oil when to eat the best? efficacy and role of cod liver oil

2020-08-27 source:internet [ typeface:big medium small ]

Cod liver oil usually contains unsaturated fatty acid glycerides and saturated fatty acid glycerides. In addition, it contains cholesterol, vitamins A and D. It also contains nonadecanol, 21-alcohol, isoctadecane, etc. Indications of cod liver oil: used for night blindness, keratitis, rickets, vitamin A and D deficiencies, malnutrition and the recovery period of diseases.

When is the best time to take cod liver oil? The efficacy and functions of cod liver oil

Cod liver oil mainly contains vitamins A and D.

The main function of vitamin A is to maintain the body's normal growth, reproduction, vision, epithelial tissue health and anti-infection immune function. Vitamin A deficiency can cause: delayed skeletal development in children; affecting the development of tooth enamel cells, resulting in imperfect teeth; damage to the epithelial tissue structure; and low immune function that can easily cause various infections of the respiratory tract, digestive tract and urinary tract.

The main function of vitamin D is to promote the absorption of calcium and phosphorus by the small intestinal mucosa and to promote the reabsorption of calcium and phosphorus by the renal tubules. Vitamin D deficiency can cause: reduced intestinal absorption of calcium and phosphorus, bone-like tissue calcification disorders; rickets, manifested by irritability, sweating, irritability and bone changes.

Vitamins A and D are both fat-soluble vitamins. Vitamin A is found in the livers of animals, especially fish livers, followed by milk and eggs. The other is found in food in the form of carotene, such as carrots, tomatoes, beans and green leafy vegetables. The carotene is converted into vitamin A in the liver.

Vitamin D is mainly found in the liver of animals, especially in the liver of marine fish. In addition, 7-dehydrocholesterol in the skin can also be converted into vitamin D under the action of ultraviolet rays. The human body absorbs vitamin D from sunlight exposure and from food.

It can be seen that cod liver oil is not the only source of vitamins A and D for children.

When is the best time to take cod liver oil? The efficacy and functions of cod liver oil

【1】Under what circumstances is it necessary to supplement cod liver oil?

Cod liver oil supplementation is required in the following situations:

If the baby does not have enough breast milk or does not add egg yolks, animal livers and other foods rich in vitamins A and D, as well as vegetables, fruits and other foods rich in carotene in time after weaning; or if the baby suffers from chronic diarrhea, liver and gallbladder diseases, etc., which affects the absorption of vitamins A and D. ; Or suffering from chronic wasting disease, which increases the consumption of vitamins A and D; or lack of sunshine; and excessive growth, which increases the demand, and other factors can cause vitamin A and or D deficiency.

The content of vitamin A in milk is higher than that in cow's milk. If the nursing mother has adequate nutrition and a balanced diet, most of the vitamin A in milk can meet the needs of the baby. There is less vitamin D in breast milk and cow's milk, so babies fed with human milk or cow's milk must take a daily preventive dose of 400 units of vitamin D starting from 2-3 weeks after birth, for 2-3 weeks. 3 years, especially for premature infants, twins and children with the above-mentioned factors causing vitamin A and D deficiency, additional vitamin A and D supplementation is needed.

【2】After the age of 3, children’s growth rate slows down and their diet and outdoor activities increase. Generally, there is no need to supplement cod liver oil.

When is the best time to take cod liver oil? The efficacy and functions of cod liver oil

【3】Is it better to supplement with cod liver oil?

The recommended daily intake of vitamin A and vitamin D is 2500-5000 units and 400-800 units respectively. If a large dose is taken in a short period of time, or excessive daily intake of vitamins A and D for a long time can cause poisoning. Symptoms include loss of appetite, failure to gain weight, irritability, sweating, headache, vomiting, lethargy, joint pain, muscle pain, etc. Commercially available concentrated vitamin AD drops (concentrated cod liver oil drops) contain 50,000 units of vitamins A and 5,000 units of D per gram, respectively. There are about 30 drops in 1 gram, so 3-5 drops per day are enough.

We often see some parents saying that they have added various vitamins to their children, but why do their children still have a bad appetite? Not gaining weight? After carefully questioning the baby's feeding situation, it turned out that the baby was fed with formula milk, plus cod liver oil, or multivitamin syrup. The result was that although it was not a toxic dose, it was an overdose. After stopping taking cod liver oil, the appetite improved significantly.

Therefore, when we feed various infant formulas and fortified foods, we must carefully read the content of vitamins A and D in the formula. We should pay attention to the total daily intake of the baby, including from various vitamin-fortified foods, and avoid overdosing. Large enough to cause poisoning.

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