Aerobic oxidative metabolism produces reactive oxygen species (ROS) as a by-product. The hereditary chemical characteristics of hydrogen peroxide (H₂O₂), superoxide anion (O₂−), and hydroxy radicals (OH) can cause harm or modify the pathophysiology of target molecules. ROS constantly admits that its primary mechanism is oxidative stress caused by ROS by-products, which exacerbates the destructive pathologies of macromolecules such as DNA, protein, and lipids. However, during the last two decades, it has been shown that ROS appears to regulate biological and physiological pathways through cellular signaling systems. At the early stages of evolution, ROS is chosen by nature for signal transmission and to allow by-products of physiological signaling release molecules to adhere to ambient nutrients in an oxidative environment. According to research, ROS was directly implicated and triggered transcription factors that adapted to rising stress molecules, with better-documented molecular pathways in prokaryotes than in eukaryotes. RNS and RSS are principally involved in plant metabolism, which includes redox-active compounds. The term “reactive species interactome” (RSI) refers to the reactive oxygen, nitrogen, and sulfur species (RONSS) that occur more often in prokaryotes than in eukaryotes. Furthermore, it contributes to disorders like cancer, diabetes, and chronic inflammation, producing infectious diseases while maintaining homeostatic systems.