Scienza dell'alimentazione

In this Very Short Introduction, Prof Lord John Krebs provides a brief history of human food, from our remote ancestors 3 million years ago to the present day. By looking at the four great transitions in human food - cooking, agriculture, processing, and preservation - he considers a variety of questions, including why people like some kinds of foods and not others; how your senses contribute to flavour; the role of genetics in our likes and dislikes; and the differences in learning and culture around the world. In turn he considers aspects of diet, nutrition, and health, and the disparity between malnutrition in some places and overconsumption in others. Finally, he considers some of the big issues - the obesity crisis, sustainable agriculture, the role of new technologies such as genetic modification of crops, and ends by posing the question: how will it be possible to feed a population of 9 billion in 2050, without destroying our natural environment? ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.

"Nutrigenetics: Applying the Science of Personal Nutrition" provides a fully referenced, readable guide to understanding the rationale and importance of nutrigenetic applications and explains why single nutrition recommendations will not fit everybody or even a majority of modern humans. This books explains how genetic variation shapes individual nutrition requirements and sensitivities, presents questions to ask about reported gene-nutrient interactions, and what needs to be done before putting nutrigenetic tests to practical use. This book blends key concepts from the fields of genetics, biochemistry, epidemiology, public health, and clinical medicine to give a rich perspective on the genetically diverse nutritional needs and sensitivities of individuals in health and disease. A steadily increasing number of people order genetic tests to find out what they should eat for better health, well being and performance, and an even greater number asks their healthcare providers about such tests. Most of the currently offered tests are not grounded in current knowledge, often absurdly so, but few professionals can explain why they are misguided. On the other hand, there are more evidence-supported genetic variants that can guide nutrition decisions, but again most healthcare providers know little about them, much less use them in their daily practice. There is a great need for a solidly evidence-based yet accessible book that explains the science of nutrigenetics and provides the tools to evaluate new nutrigenetic tests. It includes comprehensive coverage of the emerging science of nutritional genetics and its promise for individually tailored nutrition guidance. It presents practical examples to enhance comprehension and spur additional research. It offers a logical progression from what nutrigenetics is, to its possibilities in enhancing health.

For over half a century, food policy has mapped a path for progress based upon a belief that the right mix of investment, scientific input, and human skills could unleash a surge in productive capacity which would resolve humanity's food-related health and welfare problems. It assumed that more food would yield greater health and happiness by driving down prices, increasing availability, and feeding more mouths. In the 21st century, this policy mix is quietly becoming unstuck. In a world marred by obesity alongside malnutrition, climate change alongside fuel and energy crises, water stress alongside more mouths to feed, and social inequalities alongside unprecedented accumulation of wealth, the old rubric of food policy needs re-evaluation. This book explores the enormity of what the new policy mix must address, taking the approach that food policy must be inextricably linked with public health, environmental damage, and social inequalities to be effective. Written by three authors with differing backgrounds, one in political science, another in environmental health and health promotion, and the third in social psychology, this book reflects the myriad of perspectives essential to a comprehensive view of modern food policy. It attempts to make sense of what is meant by food policy; explores whether the term has any currency in current policy discourse; assesses whether current policies help or hinder what happens; judges whether consensus can triumph in the face of competing bids for understanding; looks at all levels of governance, across the range of actors in the food system, from companies and the state to civil society and science; considers what direction food policies are taking, not just in the UK but internationally; assesses who (and what) gains or loses in the making of these food policies; and identifies a modern framework for judging how good or limited processes of policy-making are. This book provides a major comprehensive review of current and past food policy, thinking and proposing the need for what the authors call an ecological public health approach to food policy. Nothing less will be fit for the 21st century.