What are examples of vitamin A?
Green leafy vegetables and other green, orange, and yellow vegetables, such as broccoli, carrots, and squash. Fruits, including cantaloupe, apricots, and mangos. Dairy products, which are among the major sources of vitamin A for Americans.
What is the main deficiency symptoms of vitamin A?
Symptoms of a Vitamin A Deficiency
- Night blindness. This causes you to have trouble seeing in low light.
- Xerophthalmia. With this condition, the eyes may become very dry and crusted, which may damage the cornea and retina.
- Infection.
- Bitot spots.
- Skin irritation.
- Keratomalacia.
- Keratinisation.
- Stunted growth.
Where is vitamin A deficiency most common?
The World Health Organization has classified vitamin A deficiency as a public health problem affecting about one third of children aged 6 to 59 months in 2013, with the highest rates in sub-Saharan Africa (48 per cent) and South Asia (44 per cent).
What are the 5 major functions of vitamin A?
Vitamin A Toxicity It’s rare, but may have serious health effects. Its main causes are excessive doses of vitamin A from supplements, liver or fish liver oil. In contrast, high intake of provitamin A does not cause hypervitaminosis.
What are some examples of vitamins?
Vitamins are substances that our bodies need to develop and function normally. They include vitamins A, C, D, E, and K, choline, and the B vitamins (thiamin, riboflavin, niacin, pantothenic acid, biotin, vitamin B6, vitamin B12, and folate/folic acid).
Which diseases are caused due to deficiency of vitamins?
List of Deficiency Diseases
| Types of Vitamins | Deficiency Diseases |
|---|---|
| B12 (Cyanocobalamin) | Anaemia |
| C (Ascorbic acid) | Scurvy |
| D (Calciferol) | Rickets |
| K (Phylloquinone) | Excessive bleeding due to injury |
Why is vitamin A deficiency common?
Vitamin A deficiency is unusual in high income countries. However, it is very common in low income countries where it often develops because of intestinal infections and worms, and protein-energy malnutrition. Vitamin A deficiency is the biggest cause of preventable blindness in children worldwide.
Which vitamin deficiencies are most likely to cause serious health problems?
While vitamin B-12 is important for the production of red blood cells, it’s also important for a healthy nervous system. Untreated, vitamin B-12 deficiency can lead to neurological problems, such as persistent tingling in your hands and feet or problems with balance.