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Benefits of Vitamin A


Benefits of Vitamin A


Vitamin A is the name for a group of nutrients that are of great importance to health.

 

This group includes retinoids (retinol, retinyl ester, retinal and retinoic acid) and carotenoids.

 

Of the carotenoids, the most important is beta-carotene, a plant pigment that is converted into vitamin A in the body.

 

Due to its extremely good effects on skin health, vitamin A is an indispensable part of cosmetics today.

 

It is especially used as an additive to wrinkle reduction creams and in UV protection products.

 

Medicinal properties of vitamin A.

 

 

Vitamin A is a powerful antioxidant that benefits your overall health in many ways.

 

Like all antioxidants, it is an effective fighter against the harmful effects of free radicals.

 

Contributes to strengthening the immune system and building strong and strong bones.

 

1. Preserves eye health

 

 

Vitamin A is crucial for eye health and vision.

 

Participates in the creation of visual pigment, which is why it is considered an excellent ally in the prevention of night blindness.

 

It is also important in combating senile macular degeneration, glaucoma and cataracts.

 

2. Rejuvenates and heals the skin

 

 

This vitamin can be useful in eliminating many dermatological problems.

 

Helps treat acne, eczema, psoriasis, burns and other skin ailments.

 

It stimulates the production of collagen and thus contributes to the regeneration of damaged tissue, ie faster healing of wounds, whether it is injuries or surgery.

 

It prevents the appearance of hyperpigmentation, nourishes, nourishes and moisturizes the skin and protects it from wrinkles and other signs of premature aging.

 

Due to its positive effect on the skin, it is often contained in creams and other cosmetic preparations.

 

3. Protects against infection

 

 

Vitamin A is a powerful fighter against infections, and is especially useful when used in combination with vitamin C and zinc.

 

It strengthens the immune system, treats respiratory and sinus infections and relieves flu, colds and flu.

 

It is especially useful for children.

 

Studies have shown that regular intake of this vitamin reduces the percentage of children with lung infections.

 

Low levels of vitamin A have been found in children and adults with severe lung disease.

 

After only a few doses of this vitamin, they showed improved lung function.

 

In addition, in children who received sufficient amounts of vitamin A, a much faster recovery from chickenpox was confirmed, as well as a lower percentage of concomitant complications associated with this disease.

 

4. Prevents the progression of AIDS

 

 

Vitamins are known to boost immunity and are therefore considered powerful allies in the fight against infectious diseases, including AIDS.

 

The most extensive scientific research has been conducted on vitamin A because it has shown the greatest benefits in people with AIDS.

 

Low levels of vitamin A in the blood of HIV-infected adults are closely linked to the progression of this disease and the increased risk of mortality, writes the World Health Organization (WHO).

 

Also, increased amounts of this vitamin are believed to be associated with a lower risk of mother-to-child transmission of HIV.

 

5. Helps with digestive and stomach ailments

 

 

Vitamin A has been shown to be an excellent supplement in the treatment of some intestinal diseases.

 

A study conducted at Harvard confirmed its positive effects in colitis, Crohn's disease and duodenal ulcers.

 

The same study confirmed that men who take larger amounts of vitamin A have a reduced risk of developing ulcers by as much as 50%.

 

6. Prevents cancer

 

 

Scientific research has shown that a deficiency of this important nutrient can be linked to the occurrence of some types of cancer, including skin, prostate, colon and certain forms of leukemia.

 

It has been found that people with these types of cancer have far lower blood retinol levels than what is considered optimal.

 

A study recently published in the journal Immunity, conducted at Stanford University School of Medicine in Palo Alto, California, found that retinoic acid may play a role in fighting colon cancer.

 

    "It has been known for years that retinoic acid is an excellent ally in combating intestinal inflammation," said lead author Dr. Edgar Engleman, a professor of pathology and medicine at the same university.

 

Also, according to scientists, vitamin A can slow the recurrence of cancer after surgery.

 

One study studied the effects of vitamin A on 307 patients operated on for lung cancer.

 

After twelve months, the tumor did not recur in most patients taking vitamin A.

 

In a small number of patients, the tumor recurred, but was far smaller than in patients who did not take vitamin A at all.

 

Natural sources and recommended doses

 

 

Vitamin A occurs in the form of retinoids and carotenoids.

 

Of the carotenoids, the most important is beta-carotene, which is present in many types of fruits and vegetables, but mostly in dark green leafy vegetables and yellow or orange vegetables and fruits.

 

Good sources of beta-carotene are:

 

    vegetables: spinach, parsley, cauliflower, kale, lettuce, beans, peas, cabbage, eggplant, carrots, beets, tomatoes, white beans, pumpkin, corn, potatoes.

    

    fruits: peach, apricot, apricot, pear, apple, plum, gooseberry, currant, grape, orange, pineapple, raspberry, strawberry, blueberry, fig.

 

 

The average required amount of vitamin A on a daily basis in adults ranges from 3,000 to 5,000 IU.

 

In certain cases, vitamin A deficiency can occur, which is why its increased intake is necessary, in order to avoid further damage to health.

 

This primarily applies to malnourished people, people with weakened immune systems, and chronic patients.

 

Increased doses of this vitamin are recommended for celiac disease, Crohn's disease and other intestinal diseases.

 

Is it possible to overdose on vitamin A?

 

 

It is almost impossible to overdose on vitamin A because foods contain this vitamin in very small amounts.

 

However, if you are taking vitamins in the form of dietary supplements, you need to be careful not to “overdo” with their doses.

 

Water-soluble vitamins (B vitamins and vitamin C) are quickly eliminated from the body and their increased intake is not so dangerous.

 

In contrast, fat-soluble vitamins (A, D, E, K) are excreted more slowly from the body.

 

Do not take more than 5,000 IU of vitamin A daily.

 

Symptoms that indicate hypervitaminosis A or vitamin A overdose are:

 

    redness of the skin

    itching and peeling of the skin

    dryness of the skin, eyes and mouth

    nausea

    diarrhea

    fatigue

    headache

    insomnia

    pain in muscles and joints

    hair loss



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