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The measurement of metabolic rates is important in many areas of science. Examples range from ecology through a broad spectrum of physiological disciplines to biomedical fields such as genetic screening, obesity, and trauma research. The organisms being measured range in size from bacteria through insects to whales, and many different measurement methodologies have developed over the years, most of which are famously difficult for the novice to master. This book covers a wide range of metabolic measurement techniques, giving background and applications information for each, with enough practical detail to allow for accurate and informed measurements with minimal trial-and-error. Much tribal wisdom, passed down from professors to students and between scientific peers, is included. A broad range of techniques is covered, including Gilson and Warburg respirometry and their modern derivatives; direct calorimetry; stable isotope work; coulometric respirometry; aquatic respirometry; and practically every variation of field and laboratory flow-through respirometry, including complex, computer-driven multi-animal systems. Characteristics of the different varieties of gas analyzers, flow measurement systems, and so on are evaluated in detail. The book brings to the task over two decades of experience in practically every type of respirometry, from laboratory settings to the jungles of Panama and the deserts of Namibia.

Flavour is arguably the most fascinating aspect of eating and drinking. It utilises a complex variety of senses and processes, that incredibly work together to generate a unified, and hopefully pleasurable, experience. The processes involved are not just those involved in tasting at the time of eating, but also memory and learning processes — we obviously shun those foods of which we have a negative memory, and favour those we enjoy. Our understanding of the science of flavour has improved in recent years, benefiting psychology, cuisine, food science, oenology, and dietetics. This book describes what is known about the psychology and biology of flavour. The book is divided into two parts. The first explores what we know about the flavour system; including the role of learning and memory in flavour perception and hedonics; the way in which all the senses that contribute to flavour interact, and our ability to perceive flavour as a whole and as a series of parts. The later chapters examine a range of theoretical issues concerning the flavour system. This includes a look at multisensory processing, and the way in which the mind and brain bind information from discrete sensory systems. It also examines the broader implications of studying flavour for societal problems such as obesity.

Since the 1940s Americans and Britons have come to enjoy an era of rising material abundance. Yet this has been accompanied by a range of social and personal disorders, including family breakdown, addiction, mental instability, crime, obesity, inequality, economic insecurity, and declining trust. This book argues that well-being has lagged behind affluence in these societies, because they present an environment in which consistent choices are difficult to achieve over different time ranges and in which the capacity for personal and social commitment is undermined by the flow of novelty. The book's approach draws on economics and social science, makes use of the latest cognitive research, and provides a detailed and reasoned critique of modern consumer society, especially the assumption that freedom of choice necessarily maximizes individual and social well-being. The book falls into three parts. Part one analyzes the ways in which economic resources map on to human welfare, why choice is so intractable, and how commitment to people and institutions is sustained. It argues that choice is constrained by prior obligation and reciprocity. The second section then applies these conceptual arguments to comparative empirical studies of advertising, of eating and obesity, and of the production and acquisition of appliances and automobiles. Finally, in part three, the book investigates social and personal relations in the USA and Britain, including inter-personal regard, the rewards and reversals of status, the social and psychological costs of inequality, and the challenges posed to heterosexual love and to parenthood by the rise of affluence.

The obesity epidemic and the growing debate about what, if any, public health policy should be adopted is the subject of endless debates within the media and in governments around the world. Whilst much has been written on the subject, this book takes a unique approach by looking at the obesity epidemic from an economic perspective. Written in a language accessible to non-specialists, the authors provide a timely discussion of evolving nutrition policies in both the developing and developed world, discuss the factors influencing supply and demand of food supply, and review the evidence for various factors which may explain recent trends in diets, weight, and health. The traditional economic model assumes people choose to be overweight as part of a utility maximisation process that involves choices about what to eat and drink, how much time to spend on leisure, food preparation, and exercise, and choices about appearance and health. Market and behavioural failures, however, such as time available to a person, education, costs imposed on the health system and economic productivity provide the economic rationale for government intervention. The authors explore various policy measures designed to deal with the epidemic and examine their effectiveness within a cost-benefit analysis framework. While providing a sound economic basis for analysing policy decisions, the book also aims to show the underlying limits of the economic framework in quantifying changes in public well-being.

Here, readers will find an overview of adolescent health issues and step-by-step prevention and intervention guidance. This Concise Companion covers major health issues that affect students' well being — from substance abuse to STDs to obesity — and presents strategies to improve student health by addressing risky behaviors. Each chapter is filled with charts, checklists and cases, organized around What We Know, What We Can Do, Tools and Practice Examples, and Key Points to Remember.

Nutrition has long been considered more the domain of medicine and agriculture than of the biological sciences, yet it touches and shapes all aspects of the natural world. The need for nutrients determines whether wild animals thrive, how populations evolve and decline, and how ecological communities are structured. This is the first book to address nutrition's enormously complex role in biology, both at the level of individual organisms and in their broader ecological interactions. The book provides a comprehensive theoretical approach to the analysis of nutrition—the Geometric Framework. The book shows how it can help us to understand the links between nutrition and the biology of individual animals, including the physiological mechanisms that determine the nutritional interactions of the animal with its environment, and the consequences of these interactions in terms of health, immune responses, and lifespan. The book explains how these effects translate into the collective behavior of groups and societies, and in turn influence food webs and the structure of ecosystems. It then demonstrates how the Geometric Framework can be used to tackle issues in applied nutrition, such as the problem of optimizing diets for livestock and endangered species, and how it can also help to address the epidemic of human obesity and metabolic disease.

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. 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.

What produces emotions? Why do we have emotions? How do we have emotions? Why do emotional states feel like something? What is the relation between emotion, and reward value, and subjective feelings of pleasure? How is the value of a good represented in the brain? Will neuroeconomics replace classical microeconomics? How does the brain implement decision-making? Are gene-defined rewards and emotions in the interests of the genes, and does rational multistep planning enable us to go beyond selfish genes to long-term plans and social contracts in the interests of the individual? This book seeks explanations of emotion and decision-making by considering these questions.

The problem of obesity is of increasing national and international importance. This book, which provides a solid foundation for the social interpretation of obesity, assessing the role of institutions rather than the individual, argues that obesity is a response to stress and that some types of welfare regimes are more stressful than others. International comparisons show that English-speaking market-liberal societies have higher levels of obesity as well as higher levels of labour and product market competition, leading to inequalities that induce uncertainty and anxiety.