Oxidative stress is a normal phenomenon in the body, characterized by an imbalance between prooxidants and antioxidants. It has become a significant topic in biological research due to its role in various health issues, including chronic diseases, cancer, and autoimmune disorders. Oxidative stress is caused by an excess of reactive oxygen and nitrogen species (ROS/RNS), which can damage proteins, membranes, and DNA, leading to cellular and tissue damage. Factors such as cold stress, physical exercise, chronic stress, nutritional stress, and hypoxia can all contribute to oxidative stress. The body's ability to maintain redox homeostasis is crucial for health, and disruptions in this balance can lead to disease. Antioxidants, such as vitamins C and E, and enzymes like superoxide dismutase, help neutralize ROS and prevent oxidative damage. Oxidative stress is also linked to immune function, with ROS playing a role in pathogen killing but also causing immunopathology. In autoimmune diseases, oxidative stress can modify self-antigens, leading to immune responses against the body's own tissues. Oxidative stress is also associated with the development of various malignancies, as DNA damage from ROS can lead to mutations and cancer. Additionally, oxidative stress contributes to aging by causing cellular damage and impairing the body's ability to repair itself. The interplay between oxidative stress, prooxidants, and antioxidants is essential for maintaining health and preventing disease. Understanding this relationship is crucial for developing strategies to combat oxidative stress and its associated health problems.Oxidative stress is a normal phenomenon in the body, characterized by an imbalance between prooxidants and antioxidants. It has become a significant topic in biological research due to its role in various health issues, including chronic diseases, cancer, and autoimmune disorders. Oxidative stress is caused by an excess of reactive oxygen and nitrogen species (ROS/RNS), which can damage proteins, membranes, and DNA, leading to cellular and tissue damage. Factors such as cold stress, physical exercise, chronic stress, nutritional stress, and hypoxia can all contribute to oxidative stress. The body's ability to maintain redox homeostasis is crucial for health, and disruptions in this balance can lead to disease. Antioxidants, such as vitamins C and E, and enzymes like superoxide dismutase, help neutralize ROS and prevent oxidative damage. Oxidative stress is also linked to immune function, with ROS playing a role in pathogen killing but also causing immunopathology. In autoimmune diseases, oxidative stress can modify self-antigens, leading to immune responses against the body's own tissues. Oxidative stress is also associated with the development of various malignancies, as DNA damage from ROS can lead to mutations and cancer. Additionally, oxidative stress contributes to aging by causing cellular damage and impairing the body's ability to repair itself. The interplay between oxidative stress, prooxidants, and antioxidants is essential for maintaining health and preventing disease. Understanding this relationship is crucial for developing strategies to combat oxidative stress and its associated health problems.