Intended as a non-technical reference guide, this book contains information for all those concerned about the impact of chemicals - both natural and synthetic - in their foodstuffs, their lives and the environment. It explains in accessible, non-technical language the science behind sugar and artificial sweeteners; cholesterol, animal fats and fibre; painkillers; plastics and PVC; and the risks associated with taking drugs. It also exposes the misinformation and disinformation that surrounds many of the controversial chemicals we meet in daily life.