Foodconsumer.org

 
USCards.com Bookmark Us
All Food, Diet and Health News 
 
 Misc. News
 Must-Read News
 Letter to Editor
 Featured Products
 Recalls & Alerts
 Consumer Affair
 Non-food Things
 Health Tips
 Interesting Sites
 
 Diet & Health
 Heart & Blood
 Cancer
 Body Weight
 Children & Women
 General Health
 Nutrition
 
 Food & Health
 Food Chemicals
 Biological Agents
 Cooking & Packing
 Technologies
 Agri. & Environ.
 Laws & Politics
 
 General Health
 Drug News
 Diseases
 Mental Health
 Infectious Disease
 Environment
 Lifestyle
 Government
 Other News
 
 Food Consumer
 FC News & Others
Search





Search Foodconsumer & Others


Add to Google
Add to My Yahoo
Newsfeed

foodconsumer.org news feed
Su bmit news[release]



More than 100 credit cards available at uscards.com from uscards.com, you can pick more than 100 credit cards


Food & Health : Food Chemicals Last Updated: Apr 20, 2011 - 9:38:09 AM


Selenium in Brazil nuts highly bioavailable
By David Liu, Ph. D.
Feb 16, 2008 - 2:54:22 PM

E.mail t.his a.rticle
 P.rinter f.riendly p.age
Get n.ewsletter
 
   
SATURDAY FEB 16, 2008 (foodconsumer.org) -- Brazil nuts are known to have high levels of selenium. Selenium in Brazil nuts is now found highly bioavailable, suggesting the food is a good source of this essential mineral, according to a study led by researchers in New Zealand.

The study in this month's American Journal of Clinical Nutrition showed Brazil nuts boosted serum levels of selenium and glutathione peroxidase (GPx) - an antioxidant enzyme at least as effectively as selenium supplements.

Two Brazil nuts a day raised blood selenium levels in study subjects by about 65 percent, showed the study by Christine Thomson from the University of Otago and colleagues.

In some countries where the soil does not contain much selenium, the mineral is fortified and supplemented in food to increase intake of the mineral, which is believed to be important as an antioxidant agent.

The researchers assigned two Brazil nuts containing actually 53 micrograms of selenium, a supplement with 100 mcg of selenomethionine and a placebo to 59 New Zealanders during the 12-week study. They tested blood samples from the participants.

At the end of study, Thomson and colleagues found blood levels of selenium increased 64.2, 61.0 and 7.6 percent in subjects using the Brazil nuts, selenomethionine and placebo respectively.

Brazil nuts and selenomethionine boosted blood levels of glutathione peroxidase by 8.3 percent and 3.4 percent respectively, compared to 1.2 percent for the individuals using the placebo.

Selenium is involved in many enzymes.  Deficiency of selenium can cause Keshan disease - a cardiomyopathy and Kashin-Beck disease - a disease characterized by the degeneration of particular cartilage between joints (osteoarthritis).

Sufficiency of selenium can boost the immune system and help fight against infections and cancers although studies are inconsistent.  Selenium may also have something to do with cardiovascular disease and type 2 diabetes.

In addition to Brazil nuts, which contain highest levels of natural selenium, the mineral is also found abundant in shrimp, crab meat, salmon, halibut, pork, chicken and whole wheat bread.

The recommended daily allowance for selenium is 40 mcg per day for children age 9 to 13 and 55 mcg for those aged 14 or older.   The RDA is 20 mcg per day for children aged 1 to 3 and 30 mcg per day for those aged 4 to 8.  Gender does not make a difference.  Pregnant women need 60 mcg per day while breastfeeding mothers need 70 mcg per day.





© 2004-2008 by foodconsumer.org unless otherwise specified

Top of Page




Google
 
Web foodconsumer.org

Search Consumer-friendly Health Sites












We have moved to Food Consumer . Org



disclaimer | advertising | jobs | privacy | about us | newsletter | Submit news/articles
link partners: | Buy Viagra | MarketAmerica.com |
Buy a home | Auto Insurance | Mortgage refinancing | DaytonaCPA.com | Take Your Blog to a Higher Level
© Copyright 2004 - 2008 foodconsumer.org All rights reserved

Disclaimer: What's published on this website should be considered opinions of respective writers only and foodconsumer.org which has no political agenda nor commercial ambition may or may not endorse any opinion of any writer. No accuracy is guaranteed although writers are doing their best to provide accurate information only. The information on this website should not be construed as medical advice and should not be used to replace professional services provided by qualified or licensed health care workers. The site serves only as a platform for writers and readers to share knowledge, experience, and information from the scientific community, organizations, government agencies and individuals. Foodconsumer.org encourages readers who have had medical conditions to consult with licensed health care providers - conventional and or alternative medical practitioners.