Before Harvey Washington Wiley, there was no regular testing of food products. There was no rigorous examination of product claims for what were often “quack” medications, or questions about the safety of food additives. Jarrow’s look at the life and career of Wiley exposes the hidden dangers of some of the products that people ate regularly in the past, not knowing that they were, in some cases, ingesting poison. Wiley’s work included an ongoing study of volunteers known as the “poison eaters” for their willingness to ingest questionable ingredients, but it went far beyond this, and his passion for and commitment to consumer safety helped lead to the formation of the FDA. Wiley’s story also gives contemporary readers an introduction to the sorts of corporate lobbying and profiteering we still see today at the expense of the health and safety of ordinary people. Jarrow’s descriptions of tragic, horrifying, misleading or simply gross ingredients that were once commonplace are both fascinating and alarming. A book incorporating generous visual material, including photographs, documents, advertisements, and political cartoons, concludes with a glossary, timeline, detailed source notes, and recommended websites and books. (Age 11 and older)