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Important Facts About Vitamin A

Updated on September 15, 2009


Important  Facts About Vitamin A



Vitamin A is important in promoting growth, preventing blindness, building new tissues and protecting against infection. Vitamin A exists in nature in two forms : a form present in plants , carotene and a form present in animals. Most of the vitamin A  in our diet exist in the carotene form and our bodies convert it to become usable. Vitamin E aids the absorption of Vitamin A.


Vitamin A and Mental Illness


Insomia, fatigue, depression and nerve pains in the extremities  maybe a sign of Vitamin A deficiency. Vitamin A levels decrease under stress, and Vitamin A is important in the manufacture of “antistress” adrenal hormones. Thus, 25,000 IUs of Vitamin A supplement is recommended for patients suffering from anxiety.


In the case of Anorexia Nervosa, one type of mental illness, the betacarotene form of   Vitamin A  is significantly elevated in the bloodstream of the patient. The patient suffering from  Anorexia Nervosa loses his appetite and takes so little food that makes him severely emaciated. Since lack of appetite is a symptom of excessive Vitamin A, the finding of excessive beta-carotene in the blood of patients with Anorexia Nervosa seemingly has a great  significance.



Lowering High Cholesterol with Vitamin A 


One hundred thousand units of Vitamin A acetate for four to six months  lowered cholesterol levels  in person with high cholesterol  and hardening of arteries.



Vitamin A and Cancer


Dr. Michael B. Sporn of the  National Cancer Institue  proposes that  Vitamin A and substances chemically related to Vitamin A can make significant contributions to the prevention of cancer. More than half of all human cancers start in the “epithelial tissue”. Epithelial tissue forms the lining of organs and glands such as mammary glands, skin and passages in the body. The lungs, gut, bladder and reproductive organs are all lined with epithelial tissues.  The epithelial tissue depends on Vitamin A for its normal development. Without adequate Vitamin A, these epithelial cells often undergo precancerous changes.


Laboratory studies reveal  that animals deficient in Vitamin A have increased vulnerability  to cancer-causing chemicals or carcinogens. Vitamin A protects animals given such chemicals from stomach, lung, respiratory, and uterine cancer.


A recent study of over 8000 Norwegian men who  observed a diet sufficient in Vitamin A significantly reduces smokers’s chances of developing lung cancer. In addition,  Vitamin A and some closely related substances can actually reverse precancerous changes  in cell of the prostrate gland.



Sources of Vitamin A  


The plant form of Vitamin A is  richly present  in green leafy vegetables such as spinach, broccoli, and alfalfa, in yellow tubers like carrots and in fruits. One carrot contains 11,000 IU of carotene.


Department of Agriculture recommendation  for daily allowances of Vitamin A are as follows:


                          1500 IUs  for infants


                           3000 IUs for children up to 12


                           6000 IUs   for adults.






Vitamin Secrets published by ROGEN INTERNATIONAL


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    • cristina327 profile image

      Maria Cristina Aquino Santander 8 years ago from Manila

      Hi magdielqr nice to hear from you.Thank s for dropping by. Regards.

    • magdielqr profile image

      magdielqr 8 years ago

      Excellent Hub!This is good stuff. Thanks.

    • cristina327 profile image

      Maria Cristina Aquino Santander 8 years ago from Manila

      Hi jayb23 it is nice to hear from you again. Thank you for dropping by. Best regards.

    • jayb23 profile image

      jayb23 8 years ago from India

      hey cristina..thanks for sharing this info. Vit A is imp for human being at any age. Cheers

    • cristina327 profile image

      Maria Cristina Aquino Santander 8 years ago from Manila

      Hi drpastorcarlotta thank you for appreciating this hub. It is nice to hear from you again. Best regards.

    • drpastorcarlotta profile image

      Pastor Dr. Carlotta Boles 8 years ago from BREAKOUT MINISTRIES, INC. KC

      GREAT HUB!!! I love it! I went to see how much Vit. A I have been taking, 2000 IU's daily 40%. I think I will bump it to 6,000 IU'S!!!! Blessings!!!