In this small and compact guide, the author Werner Winkler summarizes 20 years of experience and knowledge about the essential nutrient zinc. In his consulting practice, he has focused intensively on the psychological and mental effects of vitamins and minerals, particularly zinc. What zinc is, what it is good for, how to recognize zinc deficiency, and the effects of zinc on our psyche and immune system are explained clearly and illustrated with case studies. Lack of motivation, irritability, and cravings for chocolate are not always the result of a bad day! "I hope the information about zinc and zinc deficiency, along with the practical tips, will help you maintain or restore your health or that of your family." (Werner Winkler).