The book offers a comprehensive review of current research regarding the influences of environmental factors involved in human health and ageing. Many environmental compounds promote excessive oxidative stress, which is the primary cause of accelerated ageing and which also contributes to the development of human diseases. The basic concepts of ageing theories are discussed, as is the promotion of oxidative stress which has been identified as one of the most important mechanisms responsible for the toxic effects of the majority of environmental pollutants. Antioxidants play an important role in the defence against pollutant-induced toxicity.