Vitamin A is one of the water-soluble vitamins and is required for a variety of physiological functions in human beings. The most important function of vitamin A is the regulation of vision, by providing the retinol form (the precursor to active retinal) needed for the retina to sense light. In addition, vitamin A is necessary for skin pigmentation and helps protect against infections as well as being required for a healthy immune system.
In addition to its role in vision, vitamin A also plays an important role in bone growth and development, cell division and differentiation, tooth mineralization and growth, wound healing, reproduction and lactation (1).
Requirements
The recommended daily intake (RDI) for vitamin A is 700 micrograms per day from birth to six months of age; 500 micrograms per day from seven to 12 months; 400 micrograms per day from one to three years; 300 micrograms per day from four to eight years; 300 micrograms per day during pregnancy (1).
Vitamin A, also called retinol, is a fat-soluble vitamin needed for good vision, healthy skin and the immune system.
The human body cannot make vitamin A from other sources. It must get it from foods or supplements.
Vitamin A is found in animal foods such as meat, fish and dairy products. Plants contain beta-carotene, which your body converts to vitamin A.
What is vitamin a good for?
Vitamin A helps maintain the health of your eyes and improves night vision by supporting the retina. It also plays an important role in bone growth and tooth development during childhood, which is why pregnant women are advised to increase their intake of this nutrient during this time of life.
Vitamin A is one of the most important vitamins for good health. It helps maintain healthy eyes and skin, supports immune function and growth, and is needed for normal cell division. Vitamin A also plays an important role in reproductive health.
Vitamin A deficiency can cause night blindness and increased risk of infection. It may also lead to dry skin, rough hair, dry eyes and mouth ulcers.
Vitamin A supplements are available in several forms: retinol, beta-carotene and mixed carotenes. Beta-carotene is converted into vitamin A in the body as needed. Mixed carotenes are a combination of beta-carotene and alpha-carotene, which are both converted into retinol.
Foods high in vitamin A include carrots, sweet potatoes, dark leafy greens (such as kale or spinach), apricots, cantaloupe, mangoes and broccoli.
Vitamin A is an essential nutrient that helps your body maintain good eyesight and a healthy immune system. It also plays a role in bone growth and reproduction. Vegetables are a great source of vitamin A, especially beta-carotene, the plant form of the nutrient.
Here are some vegetables high in vitamin A that you can incorporate into your diet:
Sweet potatoes
Carrots
Spinach
Kale
Vitamin A is a fat-soluble vitamin that’s important for good vision, healthy skin and cell growth. Vitamin A is found in animal products like eggs, milk, fish and liver. Plant foods also contain beta-carotene, which your body converts to vitamin A.
Vitamin A is an essential nutrient that the body can’t produce on its own. It’s essential for growth and development, but it’s also important for maintaining healthy vision and skin.
The recommended daily intake of vitamin A is 600 micrograms for men and women 19 years old or younger, older adults should aim for 700 micrograms each day.
Vitamin A is an essential vitamin for good health. It’s important for growth, eye health, immune function and skin health.
Vitamin A is available in two forms: preformed vitamin A and pro-vitamin A carotenoids. Preformed vitamin A comes from animal sources and is found in foods such as liver, fish oils and dairy products. Pro-vitamin A carotenoids are plant pigments that the body converts into vitamin A — they’re found in orange fruits and vegetables such as carrots, sweet potatoes and squash.
The recommended daily intake (RDI) of vitamin A depends on your age group:
For children over 6 months of age, it’s 400 to 700 micrograms (mcg).
For females ages 19 to 50 years old, it’s 700 mcg for pregnant women or breastfeeding mothers; 700 mcg for non-pregnant/non-breastfeeding women; 900 mcg for lactating women who are not breastfeeding. This applies to both males and females over 18 years old.
For males ages 19 to 50 years old, it’s 900 mcg for pregnant or breastfeeding mothers; 900 mcg for non-pregnant/non-breastfeeding women; 1,300 mcg
Vitamin A is a fat-soluble vitamin that’s important for healthy skin, hair, and eyes. Vitamin A is an antioxidant that can help protect your body against cell damage caused by free radicals, and it supports bone growth.
Vitamin A is found in many foods, including animal products such as eggs, dairy products, and fish. It’s also found in green leafy vegetables and orange fruits and vegetables like carrots, sweet potatoes, cantaloupe, squash (butternut or acorn), mangoes and apricots.
Recommended Daily Intake of Vitamin A
The recommended dietary allowance (RDA) for vitamin A is 900 micrograms per day for men aged 19 years or older. Women aged 19 years or older should get 700 micrograms per day.
Although some people are able to get all the vitamin A they need from food alone, others may need to take a supplement to reach these levels because there’s not enough vitamin A in most diets. If you live in a developing country with poor access to fresh fruits and vegetables — or if you have a condition such as liver disease that makes it difficult for your body to absorb vitamin
Vitamin A is a fat-soluble vitamin that’s important for growth, development, and good vision. It’s also needed for healthy skin, hair, and nails.
The best food sources of vitamin A include carrots, sweet potatoes, kale, spinach and collard greens. Other foods that contain vitamin A include fortified milk and breakfast cereals (check the labels), cantaloupe, mangoes, apricots, peaches, dark green leafy vegetables like spinach and broccoli.
Vitamin A is found in animal products such as liver and fish oils. It can also be taken as a supplement or in multivitamins.
How much should you take?
The recommended daily intake of vitamin A varies depending on your age:
For adults 19 years and older: 3,000 mcg RAE (retinol activity equivalents) per day
For pregnant women: 6,000 mcg RAE per day**
Vitamin A is a fat-soluble vitamin that is essential for good vision, bone growth and teeth formation. Vitamin A also helps regulate the immune system, keeps skin healthy and supports cell growth.
The recommended daily intake (RDI) of vitamin A for adults is 700 micrograms (mcg) per day. The RDI increases to 900 mcg for men who are over age 50 and for women who are over age 70.
Vitamin A supplements can be taken as retinyl palmitate or in the form of beta carotene. If you take vitamin supplements containing beta carotene, make sure you eat foods high in antioxidants to prevent oxidation from occurring in your body.
Some common sources of vitamin A include:
Carrots – 1 cup (raw) = 730 IU
Sweet potato – 1 medium = 880 IU
Winter squash – 1 cup (cooked) = 940 IU
Vitamin A is a fat-soluble vitamin that supports healthy skin, bones and teeth. Vitamin A also helps to maintain healthy mucous membranes in the respiratory tract, urinary tract and gastrointestinal tract.
Vitamin A plays a role in eye health because it’s essential for night vision and the production of rhodopsin, which is necessary for normal vision.
The recommended daily allowance (RDA) for vitamin A is 900 micrograms (mcg) for men and 700 mcg for women per day.
Here are some foods that contain vitamin A:
Cod liver oil – 1 tablespoon provides 2,300 IU of vitamin A
Sweet potato – 1 medium sweet potato provides 778 IU of vitamin A
Butter – 1 tablespoon provides 567 IU of vitamin A
Spinach – 1 cup cooked spinach provides 434 IU of vitamin A.
Vitamin A is an essential vitamin required for vision, bone growth and reproduction. It’s also important for the immune system and skin health.
Vitamin A can be found in many foods, including milk, cheese, eggs and leafy green vegetables. Vitamin A supplements may also be taken to ensure that you get enough of this nutrient.
According to the National Institutes of Health (NIH), recommended daily intakes vary depending on age, gender and whether you’re pregnant or breastfeeding. For example, women who are pregnant or breastfeeding need up to 2,700 micrograms (mcg) of vitamin A per day while men need 900 mcg per day. Children under 4 should have 400 mcg per day while children ages 4-8 should have 500 mcg per day. Adults should get 700 mcg per day for men and 700 mcg for women, regardless of age.