Vitamin A is a fat-soluble vitamin necessary for a variety of biological processes. This vitamin is vital for growth and development, as well as maintaining strong vision and a healthy immune system. This blog (Vitamin A: Function, Deficiency Symptoms, and Richness in Foods) deals overview of Vitamin A.

Retinol, retinoic acid, retinal, and several provitamins A carotenoids such as beta-carotene are all classified as vitamin A. The retinyl group is a beta-ionone ring with an isoprenoid chain connected that is found in all kinds of vitamin A. Vitamin action necessitates both structures.

The function of Vitamin A

Vitamin A’s Purpose

Vitamin A is a boon to us because it has so many health benefits. It is necessary for the proper functioning of our bodies. It boosts cell growth and development, enhances our immune system, and aids in the treatment of eye issues.

Vitamin A is mostly using to improve eyesight and alleviate night blindness, which is a condition in which the eyes are unable to sense anything in the dull or inadequate source of light.

Vitamin A’s most potential advantage is its ability to prevent and treat Xeropthalmia, a disorder in which the eyes fail to create tears, leading the conjunctiva to dry up and cause dry eye syndrome. If left untreated, it can result in corneal injury and visual loss.

Vitamin A, in addition to treating visual problems, helps to strengthen and remodel bones, prevent osteoporosis, and maintain overall bone health.

It is also important for reproduction and baby development, as well as enhancing male and female fertility.

Vitamin A is critical for our body’s immune system to function properly. It aids in the formation of white blood cells, which operate as a barrier to protect our bodies from illnesses and bacteria.

Vitamin A’s most potential advantage has recently been discovered in the treatment of breast, lung, and prostate cancer. People with a family history of cancer have been demonstrated to have a lower cancer risk when they consume Vitamin A regularly.

Vitamin A is necessary for cell control since it is a powerful antioxidant. According to studies, it regulates the release of insulin from the cell into the bloodstream, giving it an advantage in diabetes management.

Vitamin A also ensures gorgeous mane and glowing skin by controlling the production and secretion of oil in the skin and hair tissue.

Vitamin A Deficiency Symptoms

The severity of vitamin A deficient symptom varies. There may be more serious consequences for some people than for others. The following (Vitamin A: Function, Deficiency Symptoms, and Richness in Foods) are some of the signs and symptoms you may be experiencing:

  1. Night blindness: This makes it difficult for you to see in dim light. It will eventually result in nighttime blindness.
  2. Xerophthalmia: The eyes may become excessively dry and crusty as a result of this illness, causing damage to the cornea and retina.
  3. Infection: People with such vitamin A deficiencies may have greater health problems since they are unable to fight infections as effectively.
  4. Bitot spots: An accumulation of keratin in the eyes causes cloudy vision in this disorder.
  5. Irritation of the skin: Skin problems such as dryness, itching, and scaling may occur in those who are deficient in vitamin A.
  6. Keratomalacia: This is an eye condition in which the cornea — the transparent layer in front of the iris and pupil — dries out and becomes cloudy.
  7. Keratinisation: In the urinary, gastrointestinal, and respiratory tracts, cells become loaded with keratin protein, die, and form tough resistant structures.
  8. Growth has slowed: Vitamin A deficiency can cause growth delays, as well as sluggish bone growth and reduced growth in children.
  9. Fertility: Vitamin A deficiency can make it difficult to conceive a child, and in some situations, it can lead to infertility.

Vitamin A Rich Foods


Carrots are high in antioxidants and have numerous health advantages. They are beneficial to your eyes. This is without a doubt the most well-known carrot superpower. Carrots are high in beta-carotene, a nutrient that your body processes into vitamin A and helps keep your eyes healthy. Furthermore, beta-carotene protects your eyes from the sun and reduces the risk of cataracts and other eye diseases. Yellow carrots contain lutein, an antioxidant that is also beneficial to your eyes.


Cod liver oil

Cod liver oil is extremely nutritious, supplying 90 percent of your daily vitamin A requirement of just one teaspoon.

Cod liver oil

Sweet Potato

Beta-carotene, a potent antioxidant, is abundant in sweet potatoes. This is a plant pigment that serves as an antioxidant in the human body. Beta-carotene is a provitamin as well. The body converts it to the active form of vitamin A.

Sweet Potato

Butternut Squash

Because of its high vitamin A concentration, butternut squash can help to improve hair and skin. Sebum production, which keeps hair hydrated, requires vitamin A.

Vitamin A is essential for the development of all human tissues, including skin and hair.


Leafy Green Veggies

More vitamin A-rich foods include spinach, collard greens, kale, and lettuce greens.



Broccoli is abundant in protein, fiber, iron, calcium, potassium, selenium, and magnesium, as well as vitamin A.



The bright orange color of pumpkin originates from an abundance of beta-carotene, which is converted to vitamin A in the body. Vitamin A is necessary for eye health because it aids in the absorption and processing of light by the retina. A single cup of pumpkin has more than 200 percent of the necessary daily vitamin A consumption with most people, making it an excellent choice for eye health.



Animal livers (Chicken and mutton) are one of the most abundant sources of vitamin A. Because animals, like humans, store vitamin A in their livers, this is the case.

Parsley, Basil, Coriander, and Thyme

Vitamin A is rich in parsley, basil, coriander, and thyme.



Vitamin A is found in 112 micrograms per cup of whole milk. That’s 16 percent of the 700 micrograms per day needed for women and 12 percent of the 900 micrograms per day suggested for males. One cup of 2 percent milk has 134 micrograms of calcium, while one cup of 1 percent milk has 142 micrograms. Skim milk, which contains 149 micrograms of vitamin A per 1-cup dose, is the best source.



Vitamin A, B-complex vitamins, and vitamin D are all found naturally in fish (especially oily fish). B-complex vitamins have been linked to healthy nervous system development. Vitamin A is required for good vision and skin, whereas vitamin D is required for bone formation.



Tomato-based meals provide a substantial supply of vitamin A activity due to beta- and gamma-provitamin carotene A activity, low quantities in tomato products, and widespread intake.


Red Bell Peppers

Red peppers are high in vitamin A and beta-carotene, which are helpful for better vision and eye health. Vitamin A also aids in the support of skin cells, the healing of wounds, and the formation of white blood cells.

Red bell pepper


Papaya contains a significant amount of this antioxidant, making it an excellent addition to an immune-boosting diet. Vitamin A is another crucial vitamin for a healthy and efficient immune system, and papaya is a good source of it.


This article (Vitamin A: Function, Deficiency Symptoms, and Richness in Foods) explained more details about vitamin A. If you need to read more health-related blogs CLICK here.

%d bloggers like this: