by Andrew W. Saul, Editor
(OMNS Jan 31, 2014) Yet another media hatchet job on vitamin E is, predictably, getting lots of attention. This particular attack is just one more in an embarrassingly long series. It is based on a recent study proclaiming that vitamin E promotes cancer. (Sayin et al. Antioxidants accelerate lung cancer progression in mice. Sci Transl Med 29 January 2014: 6: 221 http://stm.sciencemag.org/content/6/221/221ra15 )
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Well, with a highfalutin’ study like that, they might at least have used real vitamin E. They didn’t.
I have searched the original paper. They mention “vitamin E” over and over and over again. However, the words “d-alpha tocopherol,” or “mixed natural tocopherols,” do not appear in the paper, at all, except in one reference citation. Why? Because that is what natural vitamin E is called. If the researchers had taken the trouble to use natural vitamin E, it would likely have reduced cancer. For example:
- Taking 300 IU of natural vitamin E per day reduces lung cancer by 61%. (Mahabir S, Schendel K, Dong YQ et al. Dietary alpha-, beta-, gamma- and delta-tocopherols in lung cancer risk. Int J Cancer. 2008 Sep 1;123(5):1173-80.) http://www.ncbi.nlm.nih.gov/pubmed/18546288
Of Course Synthetic Vitamin E is Less Effective
With a careful search through a lot of jargon, you will discover that the negative study used DL-a-tocopheryl acetate, a synthetic pseudo-vitamin E. However, real “vitamin E” is actually eight different biochemical forms, alpha-, beta-, delta- and gamma tocopherols, and alpha-, beta-, delta-, and gamma-tocotrienols. The much-touted “vitamin-E-causes-lung-cancer” study ignores this. I believe that the authors were so embarrassed that they selected synthetic vitamin E, which almost anyone knows to be inferior, that they quietly stated only once, in their entire paper, what kind of “E” they used. If I am wrong, let them prove otherwise. OMNS invites and will publish their rebuttal to this editorial.
And, the authors utterly ignored tocotrienols. Look for that word in their study condemning vitamin E. Look really hard. It is not there. The word tocotrienol does not appear in the paper. Not once.
Why? Because gamma tocotrienol is known to destroy cancer stem cells.
- Research published in the International Journal of Cancer has shown that gamma-tocotrienol, a cofactor found in natural vitamin E preparations, actually kills prostate cancer stem cells. These are the very cells from which prostate cancer develops. They are or quickly become chemotherapy-resistant. And yet natural vitamin E complex contains the very thing to kill them. Mice given gamma-tocotrienol orally had an astonishing 75% decrease in tumor formation. (Sze Ue Luk1, Wei Ney Yap, Yung-Tuen Chiu et al. Gamma-tocotrienol as an effective agent in targeting prostate cancer stem cell-like population. International Journal of Cancer, 2011. Vol 128, No 9, p 2182-2191. http://onlinelibrary.wiley.com/doi/10.1002/ijc.25546/abstract )
- Gamma-tocotrienol also is effective against existing prostate tumors. (Nesaretnam K, Teoh HK, Selvaduray KR, Bruno RS, Ho E. Modulation of cell growth and apoptosis response in human prostate cancer cells supplemented with tocotrienols. Eur. J. Lipid Sci. Technol. 2008, 110, 23-31. http://onlinelibrary.wiley.com/doi/10.1002/ejlt.200700068/abstract. And: Conte C, Floridi A, Aisa C et al. Gamma-tocotrienol metabolism and antiproliferative effect in prostate cancer cells. Annals of the New York Academy of Sciences, 2004. 1031: 391-4. http://www.ncbi.nlm.nih.gov/pubmed/15753178?dopt=AbstractPlus