VITAMIN A

Johanna Hartan 9K 20/02/2014

HISTORY AND DISCOVERY

Vitamin a was discovered in the early 1900

USES IN THE BODY

Vitamin a is very good for night vision.

DISORDERS

Vitamin A deficiency is a very serious problem.

DIAGNOSIS

Vitamin a deficiency can be diagnosed with a blood test or an eye exam.

SYMPTOMS

Night blindness is a common symptom of VAD

INCIDENCE OF DISORDER

The disorder is very uncommon in developed countries but is very widespread in underdeveloped ones.

Use of vitamin supplements in the U.S

TREATMENT

A healthy, vitamin A rich diet is the best treatment and prevention.

CURRENT REASERCH

A lot of effort is being put into helping women and children who suffer from VAD

Retinol is a form of vitamin a found in animal products, while carotene is found in plants. Carotenes are called pro-vitamin

a because when they are absorbed the body turns them to vitamin a

Plant sources of vitamin a include orange and dark green fruits such as sweet potato, mango, spinach and apricots

Vitamin a is essential for normal cell growth although it has not been proven to prevent cancer.

Vitamin a also prevents infertility

Massive overdoses of vitamin a can cause rough skin dry hair and an enlarged liver.

5 FACTS

ORGANIZATION

Child info http://www.childinfo.org/vitamina_progress.html

FAOhttp://www.fao.org/docrep/w0078e/w0078e09.htm

WHOhttp://www.who.int/publications/cra/chapters/volume1/0211-0256.pdf

"Micronutrient deficiencies." WHO. N.p., n.d. Web. 14 Feb. 2014. <http://www.who.int/nutrition/topics/vad/en/>.

"Patient.co.uk - Trusted medical information and support." Patient.co.uk. N.p., n.d. Web. 17 Feb. 2014. <http://www.patient.co.uk/doctor/Vitamin-A-

Deficiency.htm>.

"VITAMIN A PROPERTIES." Properties of vitamin A. N.p., n.d. Web. 17 Feb. 2014. <http://www.botanical-online.com/vitamin_A_properties.htm>.

"VITAMIN A PROPERTIES." Properties of vitamin A. N.p., n.d. Web. 17 Feb. 2014. <http://www.botanical-online.com/vitamin_A_properties.htm>.

"Vitamin A." — QuickFacts. N.p., n.d. Web. 14 Feb. 2014. <http://ods.od.nih.gov/factsheets/VitaminA-QuickFacts/>.

"Vitamin A: MedlinePlus Medical Encyclopedia." U.S National Library of Medicine. U.S. National Library of Medicine, n.d. Web. 17 Feb. 2014.

<http://www.nlm.nih.gov/medlineplus/ency/article/002400.htm>.

"Vitamins All." Vitamins All. N.p., n.d. Web. 15 Feb. 2014. <http://www.vitaminsall.com/vitamin-a-deficiency-symptoms-causes-and-

treatment/>.

"what is vitamin a?what does vitamin a do?." Medical News Today. MediLexicon International, n.d. Web. 17 Feb. 2014.

<http://www.medicalnewstoday.com/articles/219492.php>.

WORKS CITED

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