Redox signaling refers to the process by which cells communicate and regulate their functions through the transfer of electrons. This process involves the balance between oxidation (loss of electrons) and reduction (gain of electrons), which is crucial for maintaining cellular health. Reactive oxygen species (ROS) play a significant role in this signaling, acting as signaling molecules that can influence various cellular pathways. In biological systems, redox signaling is essential for processes such as cell growth, immune response, and apoptosis (programmed cell death). Disruptions in redox signaling can lead to various diseases, including cancer and neurodegenerative disorders. Understanding this signaling mechanism is vital for developing potential therapeutic strategies.