Overview of Vitamin A

Hello learners, hope you are doing well. In my 1st article I wrote about very very important functions of vitamin A. Today I want to briefly discuss about vitamin A.

*functional forms:
1. Retinol
2. Retinal
3. Retinoic acid
But still there is an inactive form of vitamin A which is called provitamin A or Beta carotene. Beta carotene is found in plants whereas other functional forms of vitamin A found in animal sources.

*Functions: However I have discussed important functions of vitamin A in this article.
https://read.cash/@Saleh123/functions-of-vitamin-a-8534939b

* Deficiency symptoms:
Now lets talk about deficiency features .
As vitamin A has several important functions in our body less intake of it causes several deficiency symptoms:
These can be devided into 2 groups
1. Ocular maifestation

a. Xeropthalmia
b. Keratomalacia
c. Night blindness
And finally and gradually if symptoms were not treated earlier
d. Full blindness


2. Extra ocular menifestation:
a. Dry and scaly skin
b. Keratinization of epithelial cells of Gastro Intestinal Tract.


* Sources:Lets have a look to the souces of vitamin A so that we dont miss this so important vitamin in our diet.
1. Animal sources: vitamin A is widely distributed in animal sources rather than plant sources.
a. Egg
b. Meat
c. Fish
d. Liver
e. Fish oil (e.g. cod liver oil)

2. Plant sources: Vitamin A is also present in some plant sources as well.
a. Papaya
b. Tomato
c. Green leafy vegetables
d. Carrots

Guys, at last I hope you all will have a healthy diet and lead a healthy life. But to do that all of us must have knowledge about food and nutrition sciences. You can follow me. I am coming to you shortly again.

Thanks all.