Understanding the public health implication of fiscal policies is crucial to combat recently increasing overweight and obesity rates in many low-and-middle income countries (LMICs). This study examines the implication of food policies, mainly tariff rates on “unhealthy” foods, including sugar and confectionery products as well as fats and oils, and governments’ subsidies on individuals’ body weight outcomes. We compile several macro- and micro-level datasets that provide for several LMICs macro-level information on food policies and micro-level anthropometric data. We exploit temporal dynamics in tariff rates on “unhealthy” foods and governments’ spending on subsidies to estimate fixed effects models characterizing the evolution of body weight outcomes. We find that temporal dynamics in tariff rates on unhealthy and energy-dense foods are significantly and negatively associated with body weight. Conditional on several observable and time-invariant unobservable factors, a decrease in tariff rates on sugar and confectionary foods or fats and oils is associated with an increase in overweight and obesity rates. On the other hand, an increase in subsidy rates, as a share of government expenditure, is significantly associated with higher overweight and obesity rates. Interestingly, we find that the implications of these food policies are more pronounced among poorer individuals. This is intuitive because relatively poorer households are more likely to spend a larger share of their income on food consumption or unhealthy foods, and these types of households are beneficiaries of government subsidies in many LMICs. These findings have important implications for informing public health policies in LMICs, which are experiencing an unprecedented rise in overweight and obesity rates.

Understanding the relationship between energy balance and obesity is essential to develop effective prevention programs and policies. The International Agency for Research on Cancer convened a Working Group of world-leading experts in December 2015 to review the evidence regarding energy balance and obesity, with a focus on low- and middle-income countries, and to consider the following scientific questions: (i) Are the drivers of the obesity epidemic related only to energy excess and/or do specific foods or nutrients play a major role in this epidemic? (ii) What are the factors that modulate these associations? (iii) Which types of data and/or studies will further improve our understanding? This book provides summaries of the evidence from the literature as well as the Working Group's conclusions and recommendations to tackle the global epidemic of obesity.

Considering the detrimental environmental impact of current food systems, and the concerns raised about their sustainability, there is an urgent need to promote diets that are healthy and have low environmental impacts. These diets also need to be socio-culturally acceptable and economically accessible for all. Acknowledging the existence of diverging views on the concepts of sustainable diets and healthy diets, countries have requested guidance from the Food and Agriculture Organization of the United Nations (FAO) and the World Health Organization (WHO) on what constitutes sustainable healthy diets. These guiding principles take a holistic approach to diets; they consider international nutrition recommendations; the environmental cost of food production and consumption; and the adaptability to local social, cultural and economic contexts. This publication aims to support the efforts of countries as they work to transform food systems to deliver on sustainable healthy diets, contributing to the achievement of the SDGs at country level, especially Goals 1 (No Poverty), 2 (Zero Hunger), 3 (Good Health and Well-Being), 4 (Quality Education), 5 (Gender Equality) and 12 (Responsible Consumption and Production) and 13 (Climate Action).

New evidence this year corroborates the rise in world hunger observed in this report last year, sending a warning that more action is needed if we aspire to end world hunger and malnutrition in all its forms by 2030. Updated estimates show the number of people who suffer from hunger has been growing over the past three years, returning to prevailing levels from almost a decade ago. Although progress continues to be made in reducing child stunting, over 22 percent of children under five years of age are still affected. Other forms of malnutrition are also growing: adult obesity continues to increase in countries irrespective of their income levels, and many countries are coping with multiple forms of malnutrition at the same time – overweight and obesity, as well as anaemia in women, and child stunting and wasting.

Cardiovascular, respiratory, and related conditions cause more than 40 percent of all deaths globally, and their substantial burden is rising, particularly in low- and middle-income countries (LMICs). Their burden extends well beyond health effects to include significant economic and societal consequences. Most of these conditions are related, share risk factors, and have common control measures at the clinical, population, and policy levels. Lives can be extended and improved when these diseases are prevented, detected, and managed. This volume summarizes current knowledge and presents evidence-based interventions that are effective, cost-effective, and scalable in LMICs.

The increasing prevalence and burden of obesity transcends borders, straining populations worldwide. Data shows that 50 million girls, 74 million boys, 390 million women, and 281 million men were estimated to have obesity in 2016 (NCD-RisC, 2017). The National Academies of Sciences, Engineering, and Medicine convened a workshop on October 9, 2018 to address the status of the global obesity pandemic and discuss diverse approaches to manage this problem. Speakers examined the collective prevalence, costs, and drivers of obesity around the world using cross-cultural comparisons. Panels and group discussions emphasized the need to reduce disparities in prevention and treatment efforts and to generate new policy and system initiatives related to nutrition and physical activity worldwide. This publication summarizes the presentations and discussions from the workshop.

This publication addresses the global challenges of food and water security in a rapidly changing and complex world. The essays highlight the links between bio-physical and socio-cultural processes, making connections between local and global scales, and focusing on the everyday practices of eating and drinking, essential for human survival. Written by international experts, each contribution is research-based but accessible to the general public.