Everything we eat, drink and breathe comprises chemicals, both natural and synthetic. How do we navigate this? The first principle of toxicology is that every chemical is toxic if the dose and duration of exposure is high enough. This book sets out assessments of situations when human and animal health is affected by drugs, biocides, food additives and cosmetics, based on the author's work as a toxicologist. Key FeaturesThe term toxic evokes mixture of worry and confusion and this book sets the criteria for the effects of exposure to chemicals in everyday life, including drugs, medical devices and cosmetics. Empowers readers to understand their personal risk of the uses and abuses of chemical uses. Describes in detail various chemical incidents and their aftermath. Explores relationships between scientists and politicians in protecting health. The Author's experience is unique, and he has been researching the effects of toxic chemicals on health for many years.