Nickel is the most common contact allergen worldwide. The main risk factors for developing a nickel allergy include ear piercing, body piercings, and costume jewelry. Individuals affected by nickel allergy must avoid nickel-containing items such as jewelry, eyeglass frames, or nickel-containing cookware. Some nickel allergy sufferers also react allergically to foods that contain nickel—often without realizing it. This book provides knowledgeable and comprehensive information on the topic of nickel allergy. In the guide section, readers will learn everything about symptoms, diagnostic methods, and the prevalence of the allergen. Practical advice for everyday life and the kitchen makes it easier to choose well-tolerated everyday items. The author thoroughly presents foods that contain particularly high levels of nickel and suggests well-tolerated alternatives. Menu suggestions and dietary tips are also included.