Navigation Links
Excess vitamin E intake not a health concern

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
Oregon State University

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:
(Date:11/11/2015)... , Nov. 11, 2015   MedNet Solutions , ... spectrum of clinical research, is pleased to announce that it ... Clinical Trials (PCT) event, to be held November 17-19 ... able to view live demonstrations of iMedNet ... learn how iMedNet has been able to deliver ...
(Date:11/4/2015)... ALBANY, New York , November 4, 2015 /PRNewswire/ ... According to a new market report published by Transparency ... Size, Share, Growth, Trends and Forecast 2015 - 2022", ... value of US$ 30.3 bn by 2022. The market ... during the forecast period from 2015 to 2022. Rising ...
(Date:10/29/2015)... 2015  Rubicon Genomics, Inc., today announced an ... its DNA library preparation products, including the ThruPLEX ... Plasma-seq kit. ThruPLEX Plasma-seq has been optimized for ... libraries for liquid biopsies--the analysis of cell-free circulating ... in cancer and other conditions. Eurofins Scientific is ...
Breaking Biology News(10 mins):
(Date:11/30/2015)... Partnership includes an MPP ... the u niversity , s Solid Drug Nanoparticle (SDN) ... - up through cost cuts ... , where licensees based anywhere in the world will have the right to make, ... Africa , where licensees based anywhere in the world will have the right ...
(Date:11/30/2015)... ... November 30, 2015 , ... ... touring exhibition Jurassic World: The Exhibition, opening in March 2016 at Melbourne Museum ... a worldwide tour including several North American tour dates. The Exhibition is based ...
(Date:11/30/2015)... , Nov. 30, 2015  Aytu BioScience, Inc. (OTCQB: ... and related conditions, will present at two upcoming investor ... an interactive real-time virtual conference, to be held December ... Conference, to be held December 2 nd & ... and streamed live via webcast. ...
(Date:11/30/2015)... TIKVAH, Israel , Nov. 30, 2015 /PRNewswire/ ... a leading developer of adult stem cell technologies for neurodegenerative ... Ltd., has been awarded an additional grant of approximately $735,000 ... Scientist (OCS). This grant, the second this year, brings the ... approximately $1.8 million (approximately NIS7 million).  ...
Breaking Biology Technology: