Vitamin A – What is It? How Does It Work?

What is vitamin?

Vitamin is an organic compound and it is an important nutrient that an organism requires. Vitamin A is one of the most vitamin needs come from food.

There are 13 known vitamins.

Vitamins are either water soluble or fat soluble.

Fat-soluble vitamins are easier for the body to store than water soluble.

Vitamins always contain carbon, so they are known as organic.

Types of vitamin

  • Fat soluble vitamin
  • Water-soluble vitamin

The fat-soluble vitamin is stored in your fat cells. Water-soluble vitamins are not stored in your body. Here we discuss fat soluble vitamin which is vitamin A.

Vitamin A

Vitamin A is an organic compound (made up of carbon).it is fat-soluble vitamin naturally present in many foods vitamin A describe as a group of compounds that have include retinol, retinoic acid, number of provitamin A, retinol.

Vitamin A

The Function

Vitamin A is required for new cell growth, healthy skin, hair, and tissue,  vision in dim light .it also helps the heart, lungs, kidneys and other organs work properly.

It acts as an antioxidant which plays a vital role in good health and longevity. it also useful for eyesight, boost immunity, faster cell growth.


Deficiencies are rare in first world countries and are a large problem of developing countries. deficiency of vitamin A can cause impaired vision and increase susceptibility to infectious disease.

Its deficiency causes your body to be more prone to infectious disease, vision problem can emerge. Thyroid dysfunction is another problem associated with severe deficiency.

How to get vitamin A?

It can be sourced from both plants and animals and primarily get by eating a well-balanced diet high in fruits, vegetables, and foods rather than from supplements.

A source from fruits and vegetables

It also comes from orange-colored fruits and vegetables, dark leafy greens like kale, yellow vegetables and yellow fruits such as:

  • Broccoli spinach
  • Turnip green
  • Carrot
  • Squash
  • Sweet potato
  • Pumpkin
  • Apricot

Source from animals

We also get vitamin A from animals by taking cod liver oil, milk, butter, cheese and whole eggs, beef liver.

Importance of vitamin A

It is most important elements in our daily routine. it is responsible for the upkeep and maintenance of your skin, teeth, and soft tissues.

Important for eyesight

It is important for vision when we look at an object, light is reflected from the object and enters the eye, striking a tissue located in the back of the eye. this tissue is known as the retina. when light strikes the retina, retinol converted into retinal which are get by vitamin A?

Regulates Gene

The retinoic acid form of vitamin A helps to regulate the rate of gene transcription.

Immune system

The retinol form of vitamin A is responsible for maintaining the function of the cells that make up these barriers also needed for the formation and activation of white blood cells.

Supports Cell Production

It also supports cell production of all blood cells are developed from stem cells. It facilitates the specialization of the stem into red blood cells also converts the iron into hemoglobin.

Skin Benefits

  • It protects against ultraviolet rays and slows down aging.
  • It produces healthy skin cells.
  • It protects against infection
Excess of vitamin A

Too much vitamin A can result in a problem as well We can get sick or experience changes in skin color and women can bear children with birth defects.


In this topic, we conclude that it is an essential component of our daily life. We must include it in our diet plan. We should always take balance diet to fulfill our requirements.

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