So what exactly are the effects and side effects of vitamin A?
1, the efficacy of vitamin A is mainly to prevent night blindness and vision loss, help the treatment of a variety of eye diseases; anti-respiratory infections; help the immune system function normally; sick can be an early recovery; can maintain the health of the surface layer of tissues or organs; help to get rid of age spots; to promote the development of strong bones, maintenance of the health of the skin, hair, teeth, gums; topical help to acne, abscesses, boils, and so on. , pustules, boils, and ulcers on the surface of the skin; helps in the treatment of emphysema and hyperthyroidism.
2, vitamin A side effects of excessive intake of vitamin A can cause toxic reactions, toxic reactions are divided into acute, chronic and teratogenic. Symptoms of acute poisoning are nausea, vomiting, headache, dizziness, blurred vision, infants can cause chimney bulge. Chronic poisoning is more common and symptoms include headache, bone and joint pain, fatigue, irritability, poor appetite, dry, itchy skin, cracked lips, hair loss and hepatomegaly. Excessive intake of vitamin A by pregnant women can affect the development of fetal bone skeleton, will make the fetus teratogenic medicine. Small recommended: vitamin A is to prevent hair loss or will lead to hair loss
Deficiency of vitamin A can cause dry eye, night blindness. Chronic malabsorption of fat often leads to vitamin A deficiency, which often occurs in children under 5 years old, mainly due to inadequate dietary intake.
Through the above introduction, we have a general understanding of the efficacy and side effects of vitamin A, and we should pay more attention to the use of it in the future. Vitamin A can be supplemented through supplements and food.
What are the foods that contain vitamin A?
1, fruits: pears, apples, loquats, cherries, bananas, cinnamon, apricots, lychee, watermelon, melon. In addition to apricots, most yellow fruits a serving of vitamin A content is less than 400 units.
2, vegetables: horseradish, cabbage, capers, tomatoes, eggplant, pumpkin, cucumber, peppers, spinach, alfalfa, pea shoots, sweet potatoes, carrots and so on. A serving of snap peas, broccoli, carrots, yellow squash, apricots, sweet potatoes, or yams provides 5,000 units of vitamin A, which is exactly the amount an adult needs in a day. One caveat: This vitamin is missing from vegetables that have lost their original color or never turned green.
3, cod liver oil: Cod liver oil is the richest source of vitamin A commercially available. The vitamin A contained in animal liver depends on the food consumed and the age of the animal. The livers of adult cattle and sheep are much richer in vitamin A than the livers of calves and lambs.
4, animal: pork, chicken, eggs, turtle, crab, snail. This category is able to be directly utilized by the body of vitamin A, mainly in animal liver, milk and milk products (unskimmed milk) and poultry eggs. Animal liver is extremely rich in vitamin A, and high amounts are found in animal kidneys and hash.
Reference answer source source website: [Baidu Thumb Doctor] What is the role of vitamin A? Vitamin A has a variety of physiological functions and is necessary for vision, growth, epithelial tissue and bone development, spermatogenesis and fetal growth and development. Vitamin A is also a nutrient for important endocrine hormones such as thalamus and pituitary gland. Vitamin A can prevent night blindness and vision loss, help the treatment of a variety of eye diseases (vitamin A can promote the formation of photoreceptor pigments in the eye); anti-respiratory infections as well as contributing to the normal function of the immune system; can maintain the health of tissues or the surface layer of the organ; help to get rid of age spots; to promote the development of strong bones, maintenance of the health of the skin, hair, teeth, dental bed; topical use to help on acne, pustules, boils, and ulcers on the surface of the skin; helps in the treatment of emphysema and hyperthyroidism.
Source website: [39Health.com] Vitamin A's role and function Vitamin A can prevent night blindness and vision loss, and help in the treatment of a variety of eye diseases (vitamin A can promote the formation of photoreceptor pigmentation of the eye); there is a respiratory system to fight infections, as well as to help normalize the function of the immune system.
Source website: [39 health network] vitamin a role and function of vitamin a role and function of vitamin a, to maintain all epithelial tissue is necessary for the sound, the lack of epithelial tissue dryness, hyperplasia, hyperkeratosis, resistance to microbial infections reduce the ability, such as epithelial secretion of the lachrymal gland stops, can make the cornea, the conjunctiva is dry, inflammation, or even softening perforation, sebaceous glands and sweat glands keratinization, skin dryness, easy to follicular pimples. dry, easy to occur follicular papules and hair loss.
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