Join Now!      Login

Whole Person Wellness Program
 
healthy.net Wellness Model
Skip Navigation Links
 
 
FREE NEWSLETTER
   
   
   
 
Health Centers
Key Services
 
Vitamin D Poll
Are you currently taking a Vitamin D supplement?
Yes
No



 
 
 Vitamins: Vitamin A -- Betacarotene 
 

The only problem that may arise from high amounts of beta-carotene, as can occur with a high intake of yellow and orange fruits and vegetables and the leafy greens, is an orange-yellow discoloring of the skin. This occurs occasionally when people drink large amounts of carrot juice daily over time. It is of no real consequence and will clear when there is a reduction in carotene intake. Carotenosis can be differentiated from jaundice somewhat by the color and also by the fact that the white parts of the eyes do not turn color as they do with jaundice.

Too much vitamin A intake, however, can lead to slight swelling of the brain and resulting pressure headaches, which may be described as the feeling of a tight band around the forehead. Nausea and vomiting may also occur, as can irritability, dizziness, abdominal pain, and hair loss. Itchy, flaky, or dry skin can also result from too much vitamin A. Anorexia (loss of appetite) and resulting weight loss, liver enlargement, menstrual problems, bone abnormalities or stunted growth, and dry or bleeding lips may also occur. There may be an increased risk of birth defects in pregnant women taking high amounts of vitamin A, say over 400 IUs per pound of body weight. (To be safe, I suggest that pregnant women limit their preformed vitamin A to 15,000 IUs, with additional amounts taken only as beta-carotene.) Children have lower requirements, and toxicity has been seen in babies given adult doses of vitamin A, 20,000–30,000 IUs per day.


RDAS for Vitamin A (in IUs)

InfantsUnder 1 year1,500–2,000
Children1–3 years2,000–2,500
4–6 years2,500–3,000
7–10 years3,000–3,500
Males11 years & up5,000–6,000
Females11 years & up4,000–5,000
Pregnant5,000–6,000
Lactating6,000–7,000

Requirements: The Recommended Daily Allowance (RDA)—that is, the minimum dietary or supplemental amount to prevent vitamin A deficiency—is approximately 5,000 IUs per day for the adult. About 10,000–15,000 IUs of beta-carotene will probably convert to about 5,000 IUs of vitamin A in the body. Approximately two medium-sized carrots will give us that daily amount. Since this vitamin is fat soluble and stored in the body, daily sources are not absolutely necessary. Requirements, however, depend on body weight, so larger people need more A. Vitamin A needs are also increased with illness, infection, trauma, anxiety or stress, pregnancy, lactation, and alcohol use or smoking.

(Excerpted from Staying Healthy with Nutrition ISBN: 1587611791)
CONTINUED      Previous   1  2  3  4  5  6  Next   
 Comments Add your comment 

 About The Author
Elson Haas MDElson M. Haas, MD is founder & Director of the Preventive Medical Center of Marin (since 1984), an Integrated Health Care Facility in San Rafael, CA and author of many books on Health and Nutrition, including ...more
 
 From Our Friends
 
 
 
Popular & Related Products
 
Popular & Featured Events
Integrative Healthcare Symposium 2015
     February 19-21, 2015
     New York, NY USA
 
Wellness Inventory Certification Training (Level I)
     February 24-May 26, 2015
     Teleclass, CA USA
 
Additional Calendar Links
 
Stevia Products & Info
 
Dimensions of Wellness
Wellness, Finding Meaning, dimension!

Home       Wellness       Health A-Z       Alternative Therapies       Find a Practitioner       Healthy Products       Bookstore       Wellness Inventory
Healthy Kitchen       Healthy Woman       Healthy Man       Healthy Child       Healthy Aging       Wellness Center       Nutrition Center       Fitness Center
Free Newsletter      What Doctor's Don't Tell You      Stevia.com      Discount Lab Tests      First Aid      Global Health Calendar      Privacy Policy     Contact Us
Disclaimer: The information provided on HealthWorld Online is for educational purposes only and IS NOT intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek professional medical advice from your physician or other qualified healthcare provider with any questions you may have regarding a medical condition.
Are you ready to embark on a personal wellness journey with our whole person approach?
Learn More/Subscribe
Are you looking to create or enhance a culture of wellness in your organization?
Learn More
Do you want to become a wellness coach?
Learn More
Free Webinar