Free radicals are molecules able to oxidize other molecules, and they can damage the cell membrane and the DNA. Although free radicals are results of normal metabolism, they can be taken in through different routes such as air or water pollutions and inappropriate diets. Free radicals can result in accelerated telomere shortening and can induce apoptosis. Although body has several antioxidant system, oxidative stress can be reduced by good habits like exercise and proper breathing techniques and exposure to clean environments and an appropriate diet. Various studies have demonstrated the role of antioxidants in prevention of different diseases such as diabetes, cataract, malignancies, rheumatoid arthritis, Alzheimer’s disease, Parkinson’s, cardiovascular diseases, and many other age-related disorders.
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