2. Vegetables: Japanese Swertia, Chinese cabbage, shepherd's purse, tomato, eggplant, pumpkin, cucumber and spinach.
Third, plants: mung beans, rice, walnuts.
Animals: pork, chicken, eggs, turtles, crabs and snails.
Vitamin A, including vitamins A 1 and A2 from animal foods, is a substance with retinol biological activity.
Vitamin A 1 mostly exists in the liver of mammals and saltwater fish, and vitamin A2 often exists in the liver of freshwater fish.
Extended data:
The efficacy of vitamin a:
1, enhance vision
Vitamin A can enhance the human eye's self-regulation ability and adaptability to light and dark environment, effectively prevent dry eye and night blindness, and improve the health of retina.
2. Enhance immunity
Vitamin A can moisten mucous membrane, maintain good immunity and enhance the vitality of white blood cells. On the one hand, it can prevent the invasion of external bacteria and viruses, on the other hand, it can cause lymphocyte reaction of disease antigens and protect the body from the inside.
Step 3 improve the skin
Toxins and free radicals in the body can cause damage to the skin, and the intake of vitamin A can greatly reduce this damage. At the same time, vitamin A can promote excess sebum secretion, thus reducing the occurrence of acne and enhancing the overall perception and health of the skin.
4. Accelerate the repair
Vitamin A has obvious protective and repairing effects on bones, especially on dental health. Taking more vitamin A contributes to the formation of dentin. Not only that, vitamin A can also repair damaged skin tissue, improve age spots and fine lines, and is also of great benefit to skin tissue.
Step 5 grow muscles
For teenagers in the developmental stage, muscles will grow rapidly. At this time, it is necessary to supplement a certain amount of vitamin A, which can help teenagers develop better. Many malnourished teenagers are caused by vitamin A deficiency.
Step 6 lower cholesterol
Vitamin A is a kind of fat-soluble vitamin, which has a certain fat-soluble effect and can reduce the cholesterol level of human body to a certain extent.
People's Daily Online-The Efficacy of Vitamin A Foods Rich in Vitamin A
People's Network-What are the functions of vitamin A? How to get it in life
Baidu encyclopedia-vitamin a