Vitamin E may prevent some tumors
Earlier studies have found vitamin E prevents some tumors by protecting cells and DNA from free-radical damage through its antioxidant effects. Free radicals occur when polyunsaturated fatty acids react with oxygen in lipid cell membranes, a process that may be essential to developing tumors, doctors said. This review of 10 studies measured vitamin E in the diets of 2,976 people with pancreatic cancer and in 253,431 others without.

Overall, those who got the highest amounts of vitamin E through diet and supplements were 19 percent less likely to have developed pancreatic cancer over the various study periods. Vitamin E stimulates superoxide dismutase, an antioxidant enzyme in every cell of the body, and may protect against tumors by boosting the immune response and suppressing the activity of cancer-growth pathways.

Reference: Med Sci Monit. 2015 May 1;21: 1249-55.
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