This book educates, informs, and empowers the readers about the impact of toxic substances on living organisms and the environment by comprehensively exploring their effects. From its engaging introduction to the core concepts of toxicology to its detailed exploration of key principles, the book takes readers on an enlightening journey through the field. It explains the basic concepts of toxicity and how various toxins interact with biological systems and disrupt normal physiological processes. It throws light on improving safety and regulatory measures and raises awareness about potential toxic hazards. It is a valuable resource for students, researchers, and anyone curious about the impact of chemicals on human health and the environment because it bridges the gap between scientific jargon and layman's terms. The book is a vital resource in the field as it provides a comprehensive foundation for understanding the interactions between environmental contaminants and biological systems. It integrates interdisciplinary concepts, making it essential for students, educators, researchers, and policymakers. The book aids in the design of studies, informs science-based regulations, and raises awareness about the impacts of pollutants. With real-world applications, emerging contaminant insights, and guidance on risk assessment and management, it equips readers to address environmental challenges and protect ecosystems and human health effectively.