It has been proposed that a growing number of diseases are caused by oxidants or radicals. Uncertainty often surrounds the relationship between certain factors and illness, making it hard to discern cause from effect. It is still helpful to learn about the chemicals or enzymes that may block, impede, or prevent radical-initiated processes. Therefore, it is becoming increasingly important to understand which substances can function as antioxidants, where they are in the body, and how they might work. As we age, our bodies become less effective at handling stress, which can lead to serious health issues due to the buildup of damaged proteins and disrupted metal balances that fuel oxidative damage. It has been observed that this stress response is compromised with age. There is compelling evidence that humans’ ability to withstand oxidative stress generally decreases with age. Research has shown that as organisms age, their genetic response to stress changes, often involving increased activity of stress-related genes. As individuals age, their stress response mechanisms seem to intensify in terms of quantity but weaken in efficacy. This disruption throws off the delicate balance between oxidation and reduction in the body’s tissues and blood, resulting in damage to lipids, proteins, and nucleic acids. Such oxidative harm is associated with alterations in the structure and function of vital molecules and contributes to the onset of various health issues, including cancer and cardiovascular disease. By accelerating the recovery of motor function, reducing neuronal impairment, and triggering vascular mechanisms in the central nervous system, regular exercise appears to prevent brain damage in a number of anatomical areas, including the cerebellum, brain stems, motor cortex, and hippocampus regions. There is increasing evidence that “unhealthy” lifestyle choices raise the risk of disease by contributing to an unbalanced antioxidative equilibrium that results in oxidative stress. The specific mechanism by which the most important endogenous and exogenous antioxidants in each class work to prevent or block particular factors that lead to oxidative damage in cells is then covered.