What is vitamin A?

How does Vitamin A useful for us? What is vitamin A? 

It’s a fat-soluble compound. It is very healthy for humans as it contains very essential nutrients.
what is vitamin A

What is preformed vitamin A and provitamin A

Plants and animals both contain vitamin A. there are two types of vitamins.
Provitamin
Preformed vitamin
Preformed vitamin A is an active form. The body uses this preformed vitamin as it is.
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Where is preformed vitamin is found?

It is found in
meat,
chicken
fish,
dairy products
Provitamin A
It is an inactive form and found mostly in plants.

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Is vitamin A is essential for eyesight?
Vitamin A is essential for eyesight as it converts the light that hits on eyes and then converts into an electrical signal and ultimately send to the brain. Night blindness is also called as nyctalopia. Its also caused due to Vitamin A.

Vitamin A and rhodopsin
Vitamin A is also regarded to be a major pigment of rhodopsin.
Rhodopsin is known that it is located in the retina of your eye and is highly sensitive to light.
People having night blindness have difficulty seeing in darkness.
Is Beta carotene useful?
It is useful for aged people as it is useful for slow down the decline of eyesight.


What is vitamin A? Is it useful for reducing the risk of cancer?

Cancer occurs when abnormal cells grow in an uncontrolled way. Vitamin A reduced the risk of the following types of cancer
  • Hodgkin's lymphoma
  • cervical,
  • lung and bladder cancer
Beta-carotene reduced the risk of cancer. Vitamin A from plants is good as it is the best way to reduce the risk of certain types of cancer.

What is the immune system?

Vitamin A protects our organs. Vitamin A also involves and plays an important role in the production of white blood cells. Therefore it can be said that it is involved in increasing our immune system.

What is acne? How this vitamin A is helpful to get rid of this?

Acne is known as a chronic, inflammatory skin disorder.
It develops painful spots and blackheads on the skin, These spots are located when the sebaceous glands get clogged up with dead skin. These glands are located in the hair follicles and produce sebum. Vitamin A deficiency may increase the risk of developing acne, as it is the cause of the overproduction of the protein keratin in the hair follicles.
Excessive use of vitamin A
The overtaken of this vitamin causes
  • Nausea
  • Dizziness
  • Headaches
  • Pain and even death
But if we get vitamin A through plant sources then it will be good.

Suggested Reading: Vitamin A  full article

Comments

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