Antioxidants are man-made or natural substances that may prevent or delay some types of cell damage. Antioxidants are found in many foods, including fruits and vegetables. They are also available as dietary supplements. Examples of antioxidants include:
Antioxidants can protect against the cell damage that free radicals cause, known as oxidative stress.
Activities and processes that can lead to oxidative stress includeTrusted Source:
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
exposure to chemicals, such as pesticides and drugs, including chemotherapy