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. Furthermore, it addresses the impact of specific classes of contaminants, such as heavy metals, pesticides, endocrine disruptors, and emerging pollutants. 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.

Mohd. Salim Reshi is an assistant professor of zoology at Baba Ghulam Shah Badshah University, Rajouri, India. He earned his M.Sc. and Ph.D. from Jiwaji University, Gwalior, India. A recipient of several prestigious awards, Dr Reshi has published in high-impact journals and secured research grants from ICMR and UGC, GOI. He is an active member of scientific organizations and serves on editorial boards of reputed journals. His research is focused on toxicology, pharmacology, nanobiotechnology, and cancer prevention.

Darakhshan Javaid is a Ph.D. scholar working under Dr. Reshi. She completed her B.Sc. from Govt. Degree College for Women, Anantnag, and her M.Sc. from the University of Kashmir, India. She has published extensively and participated in national and international conferences. Her research is focused on green-synthesized silver nanoparticles for breast cancer treatment.

Syed Sanober Qadri is pursuing her Ph.D. under Dr. Reshi. She is an alumna of the University of Kashmir, India, and has published in esteemed journals and actively engages in scientific conferences. Her research is focused on hepatoprotective plant metabolites and metallic nanoparticles.

Neelu Sinha is an assistant professor of biochemistry at Dr Bhimrao Ambedkar University, Agra. She earned her M.Sc. and Ph.D. from Jiwaji University, India. A UGC fellow, Dr Sinha has received multiple research grants and has been trained internationally. Her research is focused on liver protection and toxicology.