What is food ? Functions of food? What are the 6 functions of vitamin A? Vitamin A related disease--Xerophthalmia

 

What is food in short answer?

Food is any nutrient-rich material consumed or absorbed by humans, animals, or plants in order to sustain life and growth. The major sources of food are animals and plants. It is consumed because it provides energy and nourishment and keeps humans and animals healthy.

Functions of food

Function Of Foods

What are benefits of vitamin A? 

Vitamin A is important for normal vision , the immune system, reproduction, and growth and development. Vitamin A also helps your heart, lungs, and other organs work properly. Carotenoids are pigments that give yellow, orange, and red fruits and vegetables their color.

Which foods are rich in vitamin A?

The main food sources of beta-carotene are: yellow, red and green (leafy) vegetables, such as spinach, carrots, sweet potatoes and red peppers. yellow fruit, such as mango, papaya and apricots

What are the 6 functions of vitamin A?

Vitamin A Functions

Vision. Vitamin A is required for the maintenance of normal vision. ...

Immune system. Vitamin A is essential for maintaining healthy immune function and deficiency can lead to an impaired response to infection.

Cell growth. ...

Gene transcription and protein formation. ...

Skin health. ...

How much vitamin A per day?

Toxicity and dosage recommendations. Just as vitamin A deficiency can negatively impact health, getting too much can also be dangerous. The Recommended Dietary Allowance (RDA) for vitamin A is 900 mcg and 700 mcg per day for men and women, respectively

Vitamin A related disease 

• Night blindness. This causes you to have trouble seeing in low light. ...
• Xerophthalmia.

Xerophthalmia

• Xerophthalmia is a serious eye disorder associated with vitamin A deficiency. Because of the potential for permanent blindness, this disorder is best managed by an interprofessional team. The patients with vitamin A deficiency are initially seen by primary care clinicians.

With this condition, the eyes may become very dry and crusted, which may damage the cornea and retina.Infection. It also diminishes the ability to fight infections. Even mild, subclinical deficiency can be a problem, because it may increase children's risk for respiratory and diarrhoeal infections, decrease growth rates, slow bone development and decrease the likelihood of survival from serious illness. Vitamin A deficiency is associated with a variety of infectious diseases, including diarrheal and respiratory disease, measles, and human immunodeficiency virus type 1 (HIV-1)