Vitamin A by: Ayrn driggers
Vitamin A is essential to growth, the protection of epithelial tissue, and the prevention of night blindness.
Vitamin A is very important for immune system of the human body. Skin, lining the digestive and urinary tracks, contains Retinol. Vitamin A are essential for the formation of white blood cell, which are important fir fighting different infectious materials, hence strengthening the immune system. Red blood cells help in absorption of oxygen. These cells are formed from the stem cells which themselves are formed by the help of retinoids. Different studies suggest that Vitamin A is helpful in reducing growth of cancer in different parts of human body for example: liver, breast, colon, and skin.
The top 10 vitamin A foods are... 1. beef liver 2. carrots 3. sweet potato 4. kale 5. spinach 6. apricots 7. broccoli 7. butter 9. eggs and 10. winter squash
Vitamin A is included in most multivitamin, and the U.S. recommended dietary allowance for adults is as follows: 900 micrograms daily or men and 700 micrograms daily for women.
If you consume too much of vitamin A... it can be very harmful. Getting too much can cause dizziness, nausea, headaches, coma, and even death. High intakes of performed vitamin A in pregnant women can also cause birth defects in their babies.
If you consume too little of vitamin A...you hill have dry eyes and night blindness. Vitamin A deficiency may exacerbate low iron status, which can lead to anemia. Other symptoms of vitamin A deficiency include dry skin, bumpy skin, hair loss, and increased severity and morality risk of diarrhea and measles.
Sources: dictionary.com, https://draxe.com/top-10-vitamin-foods/ , http://www.news-medical.net/health/Vitamin-A-Functions.aspx