Smoking, diabetes and obesity are three well known factors for developing cataracts. And Vitamin C and E can reduce the risk of developing them when taken long term.
One study reveals when Vitamin C was taken over ten years the risk of cataracts was reduced by 80-percent and an effect relating to the benefits of antioxidants. To prevent age-related diseases f the eye the best thing to do is to lower oxidative stress by not smoking, reduce excess weight, and to get additional doses of vitamin C 3,000-6,000 m a day broken up throughout the day, and vitamin E 400-1,200 IU of mixed tocoperols and tocotrienols.
Oxygen is necessary for the body but also produces a by-product known as free radicals which can damage the enzymes necessary for cells to operate correctly and for DNA molecules. Antioxidants go out into the body and capture these free radicals and convert them back into molecules that can be used by the body. The body makes some antioxidants on its own but the body can always use an extra dose due to pollutants in the air and toxins we ingest.
Vitamins C and E, selenium and carotenoids; beta-carotene-carrots, lycopene-tomatoes, lutein-spinach and corn, astaxanthin-cruciferous vegetables-red, yellow and orange, are all antioxidants and are also called chemopreventive agents, or anticancer activity. Antioxidants decrease mutagenesis, and thus carcinogenesis by decreasing oxygenated cell division
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