Antioxidants can be obtained from both endogenous and exogenous sources. Endogenous antioxidants are produced within the body and include enzymes like SOD and catalase. Exogenous antioxidants are obtained through diet and include nutrients like vitamins C and E, and plant-derived compounds such as flavonoids and carotenoids. Consuming a balanced diet rich in fruits and vegetables can enhance the body’s antioxidant capacity and provide a defense against toxicological insults.