How can we ensure that pregnant women need to supplement vitamin A during pregnancy? You can eat more fresh fruits and vegetables rich in carotene, because carotene can be converted into vitamin A in the human body, and you can also get the folic acid necessary for pregnant women. It helps prevent congenital anencephaly, killing two birds with one stone.
Why does eating animal liver cause fetal teratogenesis? People find this strange. In terms of nutrition, the nutritional value of animal liver is indeed very high. It contains 20% protein, a variety of animal vitamins, calcium, phosphorus, iron, zinc, etc., which are all essential nutrients for the human body. In particular, eating pig liver also has the therapeutic and health-care functions of nourishing blood, protecting liver, nourishing the skin, and preventing night blindness. It can be described as affordable food. However, medical researchers have done a lot of experimental studies and found that if animals are fed large amounts of vitamin A during pregnancy, fetal malformations will occur. For the first time, people learned about the relationship between vitamin A and fetal malformations.
Someone also conducted a survey on more than 20,000 pregnant women. They take a lot of vitamin A during pregnancy. As a result, a proportion of their offspring suffer from cleft lip, cleft palate, ear, eye, and urinary system defects, and rarely central nervous system disease. Or thymus hypoplasia, etc. According to data analysis: During pregnancy, especially in the first 3 months, if the daily intake of vitamin A exceeds 15,000 international units, the risk of fetal teratogenesis will increase. Its sources of vitamin A are mainly foods and medicines made from animal livers. Usually, pregnant women can supplement 3000-5000 international units of vitamin A every day. Pork liver contains 43500 international units of vitamin A per 500 grams. The same amount of vitamin A content in the liver of cattle, sheep, chicken, duck and other animals is higher than that of pig liver. Among them, chicken liver is several times more than pork liver. Therefore, in order to protect the health and safety of the next generation, pregnant women should not eat too much animal liver and its products.
So how can we ensure that pregnant women supplement vitamin A during pregnancy? You can eat more fresh fruits and vegetables rich in carotene, because carotene can be converted into vitamin A in the human body, and you can also get the folic acid necessary for pregnant women. It helps prevent congenital anencephaly, killing two birds with one stone.