Antioxidants can protect against the cell damage that free radicals cause, known as oxidative stress.
Activities and processes that can lead to oxidative stress includes: mitochondrial activity, excessive exercise, tissue trauma, due to inflammation and injury, ischemia and reperfusion damage, consumption of certain foods, especially refined and processed foods, trans fats, artificial sweeteners, and certain dyes and additives, smoking, environmental pollution, radiation, exposure to chemicals, such as pesticides and drugs, including chemotherapy, industrial solvents, ozone etc
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