Hidden Hunger is an increasing problem even in developed countries, whose potential negative consequences on long-term health are often overlooked and underestimated. Chronic malnutrition is at the core of the global hunger challenge facing science, politics, and economics. In plain language and with moving examples, Hans K. Biesalski describes how hidden hunger affects human health long before malnutrition becomes obvious. Worldwide, over one third of deaths among children under 5 years of age is associated with malnutrition. As poverty is the main reason for hidden hunger, addressing this dire challenge requires long-term policies. Land grabbing and climate change seriously counteract a lot of efforts to overcome hidden hunger. This book is a highly impressive call to action. Investment in agriculture and in particular in small-scale farmers to improve subsistence farming are among the approaches suggested to reach a sustainable solution. The author is head of the department of biochemistry and nutrition and managing director of the Food Security Center at the University of Hohenheim, Germany. He is a member of numerous advisory and expert groups for the World Health Organization (WHO), the Food and Agriculture Organization (FAO) and the Global Forum on Food Security and Nutrition.