A few years ago, vitamin D has become one of the nutrients of hot red. Many international studies have pointed out that vitamin D is a powerful tool to fight the new coronavirus.
vitamin D is a member of fat-soluble vitamins. Other fat-soluble vitamins are vitamins A, E, and K. Last week, water-soluble vitamins B and C were introduced, and this week, the importance of these large fat-soluble vitamins to health.
Vitamin A is closely related to the organs in which the human body is connected to "light". It can help the eyes adjust the light and maintain vision, and at the same time maintain normal functions of the mucosa and skin.
Vitamin A deficiency mostly occurs in developing countries. According to national nutrition survey data, people are deficient in vitamin A. Vitamin A is easy to be taken from diet, such as fish oil and internal foods. If you eat foods rich in β foods such as vegetarian and pumpkin, the human body can also synthesize them by itself.
What are the importance of vitamin A?. Protect vision health
. Maintain skin, hair and mucosa health
. Maintaining immune function
Su Xiuqing, director of the Nutrition Department of the Hospital Affiliated to Taipei Medical University, said that the human vision, genes, reproductive system, immune system, skin, mucosa, etc. all require vitamin A to help maintain functions. If you are in a country with food deficiency, vitamin A deficiency is more likely to occur. In severe cases, night blindness will occur, and the patient's skin will be particularly rough and keratinous, and the immune system will be affected, which will also affect growth and development.
Some children are poor and lack vitamin A when they are born, but children are not able to speak, and they will not express themselves when their eyes are declining or cannot see things in the dark night. Corneal or corneal dryness will begin to appear. Children often rub their eyes and grab their eyes red and tummy. In addition, they will continue to develop photophobia and eye pain, so they are found to have night blindness. It is often too late to catch up from night blindness to nutrient deficiency. Severely, they may lead to blindness.
Vitamin A not only helps the eyes or skin maintain health, but also plays an important role in immune function. According to research, if the body can maintain sufficient vitamin A intake, it can reduce the chance of cancer compared with people who lack vitamin A.
{twenty three} {twenty four}
Daily recommended amount of vitamin A intake?. Taking 100 grams of liver may exceed the recommended daily intake for men and women
According to the recommendations of national nutrition, men recommend 600 micrograms of vitamin A per day and women 500 micrograms of vitamin A per day. There are about 7,000 micrograms of vitamin A per 100 grams of liver. Su Xiuqing said that taking 100 grams of liver may exceed the recommended daily intake for men and women, but it is difficult for some people to eat liver every day, and it is difficult for people to develop vitamin A poisoning from their diet, so people do not have to worry too much.
What problems may occur with excessive vitamin A?. Generally, normal diet will not overdose
. Abnormality occurs only after a short period of high dose or long-term injection
According to past studies, only a single dose of vitamin A or a high dose of vitamin A within a short period of time may lead to acute poisoning. The dose of the dose is about 150,000 micrograms, which may cause it. Su Xiuqing said that if acute vitamin A poisoning occurs, symptoms such as nausea, vomiting, severe headache, head pain, blurred vision, etc., and emergency treatment can almost recover.
However, internationally, people are more worried about "chronic vitamin A poisoning". They eat more than 30,000 micrograms of vitamin A every day for several years, and may experience reactions such as middle-aged neurology, liver, bone abnormalities or skin changes. During or before pregnancy, large amounts of vitamin A may cause fetal malformations. If a baby takes more than 5,500 micrograms of vitamin A supplement every day, it may cause diet, irritability, increased internal pressure, skin disease, skin loss, etc. in just three months. But Su Xiuqing emphasized that it is unlikely that excessive consumption will occur when eating normally.
Su Xiuqing said that vitamin A is an important vitamin for the human body. Some people are worried that if they usually like to eat liver and eat Husband, will vitamin A have an outbreak? She said that if you eat husband every day, your skin will be yellower than it will be so serious.
When taking vitamin A supplements, please pay attention?. It is not recommended to supplement vitamin A through health foods
Suxiu. It is not recommended that the public supplement vitamin A through health foods. She said that vitamin A is very easy to get from diet, and fruits such as mangoes and watermelons contain trace amounts of vitamin A. A portion of mango has 108 micrograms and a portion of watermelon has 58 micrograms. Therefore, in Taiwan, it is easy to get enough vitamin A every day without additional supplementation.
Responsible editor: Gu Zihuan