Â Ref. 1 reported reduced risk for lung cancer among people taking vitamin E. Ref. 2 recommends increasing the RDA for vitamin E. Vitamin E does not have the toxic effects seen with radiation treatment (3). But vitamin E is by no means the only substance associated with lower risk for cancer. Some of this research is old (4). However, that does not mean that it isn't valid. Perhaps it has just been ignored. Recent research also supports the role of vitamin E (5).
Â According to Ref. 6, vitamin C slows down cancer.Â Ref.Â 7 reportsÂ the same results in the layman's language.
But What about the Drugs?
Â Ref. 8 is an expose on the drug companies. Ref. 9 by the same doctor also blasts the drug companies. Ref. 9 puts part of the blame on academic medicine for selling out to them.
Â Ref. 10 reports that vitamin B6 reduces the risk of colon cancer. The risk reduction was "moderately strong". Similar results are given in Refs. 11 & 12. Ref. 13 also reports benefit from B6.
Â Where should you do your grocery shopping? Your best bet for cancer prevention is in the produce isle. Fruits and vegetables are your best bets for preventing cancer. They have fiber, which fights against colon cancer. They also have flavonoids and carotenoids. Flavonoids are plant pigments that are only found in plant foods. Carotenoids are also pigments. Beta carotene, which is yellow, is found in milk and butter as well as plant foods such as carrots, sweet potatoes, and orange fruits and vegetables including squash. Pick colorful fruits and vegetables including tomatoes, which contain lycopene. The colorful produce has these pigments. Lutein is considered good for the eyes. It is yellow, and it is in corn.
Â There are also other protective substances that are not completely understood. Some are in cruciferous vegetables. There is a theory that the mineral selenium helps prevent cancer.
Â Colorful berries contain flavonoids, which are thought to fight against cancer.
1.Â Â Mahabir S, Schendel K, Dong YQ, Barrera SL, Spitz MR, Forman MR. Dietary alpha-, beta-, gamma- and delta-tocopherols in lung cancer risk. Int J Cancer. 2008 Sep 1;123(5):1173-80.
2. Doctors say, Raise the RDAs now. Orthomolecular Medicine News Service, October 30, 2007. http://orthomolecular.org/resources/omns/v03n10.shtml
3. Fischer W. [The protective effect of tocopherol against toxic phenomena connected with the roentgen irradiation of mammary carcinoma.] Munch Med Wochenschr. 1959 Sep 4;101:1487-8. German.
4. Telford IR. The influence of alpha tocopherol on lung tumors in strain A mice. Tex Rep Biol Med. 1955;13(3):515-21. Swick RW, Baumann CA, Miller WL Jr, Rumsfeld HW Jr. Tocopherol in tumor tissues and effects of tocopherol on the development of liver tumors. Cancer Res. 1951 Dec;11(12):948-53.
5. Malmberg KJ, Lenkei R, Petersson M et al. A short-term dietary supplementation of high doses of vitamin E increases T helper 1 cytokine production in patients with advanced colorectal cancer. Clin Cancer Res. 2002 Jun; 8(6):1772-8.
6. Chen Q, Espey MG, Sun AY, Pooput C, Kirk KL, Krishna MC, Khosh DB, Drisko J, Levine M. Pharmacologic doses of ascorbate act as a prooxidant and decrease growth of aggressive tumor xenografts in mice. Proc Natl Acad Sci U S A. 2008 Aug 4.
7. BBC NEWS: http://news.bbc.co.uk/go/pr/fr/-/2/hi/health/7540822.stm Published: Aug 4, 2008.
8. Angell M. The Truth about the Drug Companies. NY: Random House, 2004.
9.Â Angell M. Is academic medicine for sale? N Engl J Med. 2000 May 18;342(20):1516-8.
10. Theodoratou E, Farrington SM, Tenesa A et al. Dietary vitamin B6 intake and the risk of colorectal cancer. Cancer Epidemiol Biomarkers Prev. 2008 Jan;17(1):171-82.
11. Matsubara K, Komatsu S, Oka T, Kato N. Vitamin B6-mediated suppression of colon tumorigenesis, cell proliferation, and angiogenesis (review). J Nutr Biochem. 2003 May;14(5):246-50.
12. Komatsu S, Yanaka N, Matsubara K, Kato N. Antitumor effect of vitamin B6 and its mechanisms. Biochim Biophys Acta. 2003 Apr 11;1647(1-2):127-30. "Epidemiological studies have reported an inverse association between vitamin B(6) intake and colon cancer risk." http://www.ncbi.nlm.nih.gov/pubmed/12686121
13. Zhang SM et al. Folate, vitamin B6, multivitamin supplements, and colorectal cancer risk in women. Am J Epidemiol. 2006 January 15; 163(2): 108-115. http://aje.oxfordjournals.org/cgi/content/full/163/2/108 .