Vitamin A is an essential fat-soluble vitamin. This article unveiling the power of Vitamin A. It supports the development of the fetus as well as your immune system, vision, and reproductive system. While getting enough is important, taking too much can be harmful. Your body needs vitamin A to function properly. In addition to being found naturally in food, it can also be taken as supplements.
This article discusses vitamin A, including its benefits, sources, and recommended intake, toxic and deficiency consequences.
Overview:
Vitamin A is a fat-soluble vitamin, and retinoids are a common name for its various forms, like retinol, retinal, retinoic acid, and retinyl ester. The eyes, skin, immune system, and many other body parts require vitamin A for healthy development and operation. It can be found in a wide variety of foods, such as omega 3 fatty acids, vegetables, and fruits.
What is vitamin A and what does it do?
Vitamin A is stored in body tissue for future use because it is a fat-soluble vitamin. The majority of the vitamin A in your body is stored as retinyl esters in your liver. Following their breakdown, these esters become all-trans-retinol, which interacts with retinol-binding protein. Once it has entered your bloodstream, your body can use it. The body uses vitamin A, a fat-soluble vitamin, for a number of crucial processes. It is necessary for healthy vision and aids in the process of cellular differentiation, which allows cells to reproduce normally. Poor night vision is frequently the initial indicator of a vitamin A deficiency.
It also supporting immune function, maintaining healthy skin, and aiding in the growth and development of various tissues and organs in the body. While vitamin A is necessary for health, excessive amounts of it can be toxic. Never exceed the daily recommended dose without first consulting your doctor.
What are functions of vitamin A in your body?
You need vitamin A for good health. It aids in cell development, immune system operation, fetal development, and vision. Vision and eye health are arguably two of vitamin A’s most well-known uses. Rhodopsin, a molecule required for color vision and low light vision, is created when the protein opsin and retina, the active form of vitamin A, combine. The conjunctiva, a thin membrane that covers the surface of your eye and the inside of your eyelids, as well as the cornea, are also protected and kept in good condition by it.
Moreover, vitamin A supports the health of your skin, intestines, lungs, bladder, and inner ear surface tissues.
What are health benefits of vitamin A?
Vitamin A is an important nutrient that benefits health in many ways.
1. Potent antioxidant
Provitamin A carotenoids, which are precursors to vitamin A and have antioxidant properties, protect your body from free radicals, highly reactive molecules that can harm it by causing oxidative stress. As oxidative stress has been linked to a number of chronic conditions, including diabetes, cancer, heart disease, and cognitive decline.
2. Vital for eye health
For healthy vision, your diet must contain an adequate amount of vitamin A. According to research, those who consume more foods high in vitamin A have a lower risk of developing age-related macular degeneration (AMD), and had a lower risk of developing cataracts.
3. May protect against certain cancers
Fruits and vegetables with high carotenoid content may offer some cancer protection because of their antioxidant properties. Some research suggests that a healthy diet rich in beta-carotene and other carotenoids from fruits and vegetables appears to reduce the risk of developing certain cancers, including Breast cancer, Colon Cancer, Esophageal cancer, Cervical cancer and Melanoma.
4. Energetic for fertility and fetal development
Vitamin A is necessary for both male and female reproduction, because it is essential for the development of sperm and eggs. Moreover, it is vital for the growth, development, and maintenance of fetal tissue. Vitamin A help to keep healthy women who are pregnant, the development of their unborn children, and those who are trying to get pregnant.
5. Boosts your immune system
Vitamin A has an impact on immune health by activating responses that shield your body from illnesses and infections. Certain cells, such as B cells and T cells, which are important to immune responses that fight disease, are created as a result of vitamin A.
6. Acne, psoriasis, and other skin disorders
Retinoids, a synthetic form of vitamin A, are found in prescription creams and pills that are used to treat severe acne and psoriasis. They have also confirmed promise in the treatment of other skin conditions, warts, and sun-induced premature aging.
7. Measles
In children who lack vitamin A, are more likely to get illnesses like the measles, and supplements may reduce the severity and side effects of the measles. Though it doesn’t seem to be beneficial unless a child is vitamin A deficient, however never give a child vitamin A supplements without their doctor’s consent.
Uses & Effectiveness
Possibly Effective for:
- Skin aging. When vitamin A (retinol) is applied topically, it helps people with aging skin’s wrinkles, flexibility, and skin tone.
- Bronchopulmonary dysplasia, a lung condition that affects newborns. Infants born with low birth weight appear to be at lower risk of developing this lung disease when given a shot of vitamin A.
- Vomiting. Diarrhea appears to be avoided when young children who are at risk of vitamin A deficiency are given vitamin A orally.
- The capacity for vision in dim lighting. In adults who are malnourished, taking vitamin A orally during pregnancy appears to reduce night blindness by 37%. When combined with zinc, vitamin A may treat this condition more effectively.
- Issues that arise following childbirth. In adults who are malnourished, taking vitamin A orally before, during, and after pregnancy lowers the risk of diarrhea and maternal death.
- Ulcerative colitis, a type of inflammatory bowel disease. Adults with ulcerative colitis may experience fewer symptoms after taking vitamin A orally every day for two months.
- Sun damage-related skin wrinkles. Women with sun-damaged skin can reduce wrinkles and improve skin smoothness by using over-the-counter vitamin A (retinol) serum.
Possibly Ineffective for:
- Allergic reactions and allergies are prone (atopic disease). Infants receiving a single oral dose of vitamin A do not appear to be protected from developing atopy.
- The miscarriage or premature birth of a child. Infant mortality in the first year of life does not appear to be prevented by oral vitamin A intake before, during, or after pregnancy.
- Melanoma, the most dangerous form of skin cancer. High oral vitamin A doses don’t appear to increase melanoma patients’ chances of survival.
- An abortion. The risk of miscarriage or stillbirth is not decreased by oral administration of vitamin A, either alone or in combination with other vitamins, before or during early pregnancy.
- Sepsis, a blood infection. Sepsis does not appear to be prevented by giving vitamin A to premature infants.
- Tuberculosis. Oral vitamin A supplementation doesn’t appear to lessen mortality risk or improve symptoms in those with this condition.
What are the symptoms of vitamin A deficiency?
Although vitamin A deficiency is common in underdeveloped nations where people may have less access to preformed vitamin A and provitamin a carotenoids in their diets. Serious medical issues can result from a vitamin A deficiency, which may include:
- The severity and risk of death from illnesses like the measles and diarrhea are both worsened.
- A negative effect on the fetus by slowing growth and development and increases the risk of anemia and death in pregnant women.
- Acne on the skin are less severe signs, and dry or rough skin.
- Night blindness,
- Increased susceptibility to infections, and
- Poor wound healing,
What are the dietary sources of the power of vitamin A?
Both preformed vitamin A and provitamin A carotenoids can be obtained through a variety of dietary sources. Your body can absorb and use preformed vitamin A more easily than it can provitamin A carotenoids from plants.
Foods highest in preformed vitamin A include:
- Butter
- Cod liver oil
- King mackerel
- Liver sausage
- Chicken liver
- Salmon
- Cheddar cheese
- Egg yolks
- Beef liver
- Liverwurst Trout
Foods high in provitamin A carotenoids like beta carotene include:
- Sweet potatoes
- Winter squash
- Cantaloupe
- Papaya
- Pumpkin
- Carrots
- Kale
- Red peppers
- Spinach
- Dandelion greens Collard greens
Getting too much vitamin A can be harmful, just as getting too little can have negative effects on health. Although it is possible to consume excessive amounts of preformed vitamin A from animal sources like liver, toxicity is typically associated with taking too many supplements and being treated with certain drugs, like isotretinoin. Since vitamin A is a fat-soluble vitamin, it is stored in your body and over time, can accumulate to unhealthy levels.
If you consume extremely high doses of vitamin A, it may be fatal or cause serious side effects. The most common side effects of chronic vitamin A toxicity — often referred to as hypervitaminosis A — are:
- Jaundice
- Delayed growth
- Decreased appetite
- Joint and bone pain
- Poor appetite
- Nausea and vomiting
- Sunlight sensitivity
- Hair loss
- Headache
- Confusion
- Itchy skin
- Vision disturbances
- Dry skin
- Liver damage
- Since too much vitamin A can be harmful, consult a healthcare professional before taking vitamin A supplements.
Precautions to be taken:
You should only take dietary supplements under the guidance of a skilled healthcare professional due to the possibility of side effects and drug interactions. When pregnant, taking too much vitamin A can lead to serious birth defects. You shouldn’t take a separate vitamin A supplement because all prenatal vitamins contain some vitamin A. Birth defects may be caused by synthetic vitamin A. This form of vitamin A should not be consumed by pregnant or trying women.
Possible Interactions with other medications:
You shouldn’t take vitamin A if you are taking any of the following medications without first consulting your doctor or other healthcare professional:
- Skin condition medications – Some skin condition medications are made from vitamin A. Combining vitamin A with these medicines may have toxic effects.
- Antibiotics (Tetracycline antibiotics) – If you are taking antibiotics, avoid taking large amounts of vitamin A.
- Drugs that can damage the liver
- Warfarin (Coumadin) – This medication is used to prevent blood clots. Vitamin A in large doses can also slow blood clotting.
Conclusion:
Vitamin A is an essential fat-soluble nutrient with a number of advantages for general health is vitamin A. It significantly supports vision, fosters skin health, supports immune system function, and aids in body growth and development. To avoid toxicity, it’s crucial to take vitamin A in the recommended doses.
It is wise to seek personalized guidance from a healthcare professional before making any dietary or supplement decisions. Your body can get a safe amount of this important nutrient from a healthy, and a balanced diet.
FAQ
What are the benefits of vitamin A for skin health?
Vitamin A supports collagen production, hence encourages cell turnover, maintains the integrity of skin tissues, and helps smooth out wrinkles and fine lines.
How much vitamin A should I consume daily?
The recommended daily intake of vitamin A varies depending on age and gender, but generally ranges from 700 to 900 micrograms (mcg) for adults.
Can vitamin A supplements help improve vision?
Supplementing with vitamin A can help with vision, especially in cases of vitamin A deficiency or conditions that affect night vision. To determine the proper dosage and rule out any underlying eye conditions, it is crucial to speak with a healthcare provider before beginning any supplementation.
Are there any risks or side effects associated with vitamin A supplementation?
Toxic effects of excessive vitamin A supplementation include nausea, headaches, dizziness, pain in the bones and joints, hair loss, and in severe cases, liver damage. Before taking vitamin A supplements, it’s crucial to follow the recommended dosage guidelines and speak with a healthcare provider.
Can vitamin A help boost the immune system?
By enhancing the integrity of mucosal barriers, promoting the growth and function of immune cells, and assisting in the production of antibodies, vitamin A is essential for maintaining a healthy immune system. While vitamin A is crucial for immune system health, it should not be used as a stand-alone treatment and instead be a part of a balanced diet and way of life that also includes other necessary nutrients and beneficial practices.
Reference Used:
https://www.healthline.com/nutrition/vitamin-a#bottom-line
https://www.mountsinai.org/health-library/supplement/vitamin-a-retinol
