Oxidative stress is a state in which an imbalance exists between the production of reactive oxygen species (ROS) and the body's ability to neutralize them through antioxidant defense mechanisms. It is a specialized skill that requires expertise in several fields, including biochemistry, molecular biology, genetics, and physiology. Understanding oxidative stress is important for developing strategies to prevent and treat various diseases and conditions associated with it, including cancer, cardiovascular disease, neurodegenerative disorders, and aging.