Navigation Links
Excess vitamin E intake not a health concern
Date:4/15/2013

CORVALLIS, Ore. Despite concerns that have been expressed about possible health risks from high intake of vitamin E, a new review concludes that biological mechanisms exist to routinely eliminate excess levels of the vitamin, and they make it almost impossible to take a harmful amount.

No level of vitamin E in the diet or from any normal use of supplements should be a concern, according to an expert from the Linus Pauling Institute at Oregon State University. The review was just published in the Journal of Lipid Research.

"I believe that past studies which have alleged adverse consequences from vitamin E have misinterpreted the data," said Maret Traber, an internationally recognized expert on this micronutrient and professor in the OSU College of Public Health and Human Sciences.

"Taking too much vitamin E is not the real concern," Traber said. "A much more important issue is that more than 90 percent of people in the U.S. have inadequate levels of vitamin E in their diet."

Vitamin E is an antioxidant and a very important nutrient for proper function of many organs, nerves and muscles, and is also an anticoagulant that can reduce blood clotting. It can be found in oils, meat and some other foods, but is often consumed at inadequate dietary levels, especially with increasing emphasis on low-fat diets.

In the review of how vitamin E is metabolized, researchers have found that two major systems in the liver work to control the level of vitamin E in the body, and they routinely excrete excessive amounts. Very high intakes achieved with supplementation only succeed in doubling the tissue levels of vitamin E, which is not harmful.

"Toxic levels of vitamin E in the body simply do not occur," Traber said. "Unlike some other fat-soluble vitamins such as vitamins A and D, it's not possible for toxic levels of vitamin E to accumulate in the liver or other tissues."

Vitamin E, because of its interaction with vitamin K, can cause some increase in bleeding, research has shown. But no research has found this poses a health risk.

On the other hand, vitamin E performs many critical roles in optimum health. It protects polyunsaturated fatty acids from oxidizing, may help protect other essential lipids, and has been studied for possible value in many degenerative diseases. Higher than normal intake levels may be needed for some people who have certain health problems, and smoking has also been shown to deplete vitamin E levels.

Traber said she recommends taking a daily multivitamin that has the full RDA of vitamin E, along with consuming a healthy and balanced diet.


'/>"/>

Contact: Maret Traber
maret.traber@oregonstate.edu
541-737-7977
Oregon State University
Source:Eurekalert

Related biology news :

1. International study: Excess dietary salt may drive the development of autoimmune diseases
2. Study associates excess maternal iodine supplementation with congenital hypothyroidism in newborns
3. New study associates excess maternal iodine supplementation with congenital hypothyroidism
4. Hulk smash? Maybe not anymore: scientists block excess aggression in mice
5. Excessive worrying may have co-evolved with intelligence
6. Vitamin P as a potential approach for the treatment of damaged motor neurons
7. Vitamin D benefits breathing in tuberculosis patients
8. Living in a sunny climate does not improve vitamin D levels in hip fracture patients
9. Folate and vitamin B12 reduce disabling schizophrenia symptoms in some patients
10. Organic tomatoes accumulate more vitamin C, sugars than conventionally grown fruit
11. Vitamin C is beneficial against the common cold
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/28/2017)... , February 28, 2017 News solutions for ... ... from 14 to 16 March, Materna will present ... show how seamless travel is a real benefit for passengers. ... biometrics to their passenger touch point solutions to take passengers through ...
(Date:2/22/2017)... -- With the biometrics market to exceed $10 ... that innovative and agile startups must incorporate into ... changing competitive landscape: multifactor authentication (MFA), point-of-sale (PoS), ... "Companies can no longer afford to cut corners ... Pavlakis , Industry Analyst at ABI Research. "Pairing ...
(Date:2/13/2017)... SAN FRANCISCO , Feb. 13, 2017 /PRNewswire/ ... a centralized platform that is designed to enhance ... the latest release in the RSA Fraud & ... to enable organizations to leverage additional insights from ... anti-fraud tools to better protect their customers from ...
Breaking Biology News(10 mins):
(Date:3/29/2017)... TORONTO , March 29, 2017 /PRNewswire/ -  GeneNews Limited ... of BreastSentry™ , a new risk stratification test for ... reference lab, Innovative Diagnostics Laboratory ("IDL"). BreastSentry incorporates a blood-based ... five-year and lifetime risk for developing breast cancer.   ... BreastSentry measures ...
(Date:3/28/2017)... Linda, Ca (PRWEB) , ... March 28, 2017 , ... ... various settings. The utilization of this technology is driven by its potential to perform ... tool, there are also some challenges that must be addressed for it to be ...
(Date:3/28/2017)... LONDON , March 28, 2017 ... to better understand Enzo Biochem and its partnering interests and ... since 2010 report provides an in-depth insight into the partnering ... On demand company reports are prepared upon purchase ... and company data. The report will be delivered ...
(Date:3/28/2017)... , March 28, 2017 Dr. ... life sciences corporation Anpac Bio-Medical Science Company ... new, international record, processing and reporting over 40,000 ... Differentiation Analysis" (CDA) liquid biopsy tests. ... Prize Laureate Summit publications, Anpac Bio,s CDA medical ...
Breaking Biology Technology: