Vitamins ABCDE, etc., are named according to what

Vitamins, also known as vitamins, are indispensable nutrients for maintaining the normal function and health of the body, and dozens of them have been discovered so far. Before the 50s, due to the relatively small number of vitamins, China used Tiangan (i.e., A, B, C......) to be numbered.

With the development of science, it was not enough to use the heavenly stem number, so like other countries, the English alphabet number was used, called vitamins A, B, C, D, ......Some vitamins are numbered in chronological order, such as vitamin E. Some are not exactly, such as vitamin B2, which was originally called vitamin in the 7th alphabet in the English alphabet, but B2 is not the 7th to be discovered, but in honor of the scientist Goldberg, who has made outstanding contributions to the study of B vitamins, named after the first letter of his name "G".

For example, vitamins K, P, and U should be in alphabetical order. Their name is also not related to the chronological order of their discovery, but to the first letter of their own main pharmacological effect. In addition, in the past, it was considered a single vitamin, and later a number of analogues with similar pharmacological effects and slightly different structures were found one after another, such as B vitamins have been found today There are more than a dozen, so there are Arabic numerals behind vitamin B, such as vitamin B1, B2, B6, etc.

1. Vitamin A

It is necessary to maintain normal vision and the integrity of mucosal epithelial cells. Recent studies have shown that vitamin A has anti-infective effects and can reduce the incidence of respiratory tract infections and diarrhoea. Egg yolks, cream, and animal livers are rich in vitamin A.

The carotene in colored vegetables and tomatoes can be converted into vitamin A after absorption.

2. Vitamin B group.

Including vitamins B1, B2, B6, B12, niacinamide and folic acid, which are necessary for maintaining metabolism and growth in the body. If there is a lack of B vitamins, some will develop "beriberi", which will cause digestive nerve and heart symptoms; Prone to angular cheilitis, glossitis, erythema and herpes, neonatal cramps and trophic giant cell anemia, etc. B vitamins are abundant in legumes, wheat bran, liver, egg yolks, fish, meat and leafy greens.

3. Vitamin C

Vitamin C deficiency makes it easy to bleed, especially gums and nosebleeds. Fresh vegetables and fruits are abundant, but if vegetables are cooked for too long, vitamin C will be destroyed.

4. Vitamin D

Lack of vitamin D will affect the absorption of calcium and phosphorus, affect the growth of bones, and is prone to appear'Osteomalacia'。Breast milk and cow's milk contain less vitamin D, so young children need to be supplemented daily.

5. Vitamin E

It is related to metabolism in the body, and mild anemia, edema and rash may occur when it is deficient. Wheat germ oil is rich in vitamin E. Modern medical research has shown that vitamins have a great impact on children's anti-infection immunity, and it has a very important role in regulating and maintaining the human immune system.

A eye protection, C tooth protection, anti-bleeding, D to help growth, b most of the anti-** disease, e coagulation.