Free radicals are by products produced within our bodies when our bodies turn food into energy. These chemicals can severely damage our bodies through a process called oxidation. They also theoretically cause aging. Antioxidants can come from fresh fruits and vegetables that are consumed. Green tea can also help battle these effects. Green tea is rich in antioxidants called flavonoids. Antioxidants are substances that hinder oxidation, especially one used to counter the weakening of stored food products. Flavonoids have many benefits which include fighting viruses, preventing inflammation and helping deal with allergies.