Too much of Vitamin A is called as toxicity. It can cause:
Vitamin A toxicity can lead to:
The maximum amount of vitamin A that can be consumed is given below. This does not include the amount prescribed by a doctor for a medical condition.
|Stages of Life||Maximum limit (IU)|
|From Birth to 1 year||2000|
|1 to 3 years||2000|
|4 to 8 years||3000|
|9 to 13 years||5667|
|14 to 18 years||9333|
Vitamin A can be found naturally in many foods and also added to some, like milk and cereal. Eating variety of food can give the required dose of Vitamin A. Like:
Primary Vitamin A deficiency:
Secondary conditions, symptoms and other diseases caused by Vitamin A deficiency are the complications related to the deficiency.
Diseases associated with the complications are:
This is done for people who have:
Vitamin A blood test:
Deficiency: Less than 50 mcg/dL
Excess: More than 200mcg/dL
Serum retinol levels:
Deficiency: Less than 28µg/dL
There are a variety of factors that affect the cost of conducting diagnostic tests for Vitamin A deficiency or toxicity. It depends on the type of test, the city or even the hospital or diagnostic centre for the tests. To get a comprehensive list of the rates of doing tests in your city, click HERE.
Early diagnosis of the deficiency is very essential before the state has worsened. Only then can it be treated:
It is an ocular (related to the eye) condition due to serious Vitamin A deficiency. The deficiency may be dietary or because of malabsorption of nutrients.
At first, Bitot's Spots may appear on the eye (refer Question No.7).
If it is still not treated, then the corneas might soften, leading to its infection and then rupture. The final stage is blindness.
In some developing countries Keratomalacia is the primary reason of childhood blindness.
In developed countries, such malnutrition is rare. It occurs as a secondary condition associated with defects in :
Prognosis is good if the treatment is done in the early stages of the deficiency. In later stages it might be fatal. Some conditions like keratopathy (appearance of calcium on the cornea), keratomalacia (refer question No. 14) and rupture of the cornea, are irreversible.
Hypervitaminosis A also called as Vitamin A toxicity, is a condition when there is too much Vitamin A in the body.The condition can be acute or chronic:
Provide us with your name and phone number to get an instant callback from one of our healthcare consultants.