One in three adults has engaged in binge drinking at least once in the previous month, and one in five teenagers has experienced drunkenness by age 15. Harmful patterns of alcohol consumption have far-reaching consequences for individuals, society and the economy. Using microsimulation modelling, this book analyses the cost of alcohol consumption in 52 countries (including OECD, European Union and G20 countries), showing how alcohol-related diseases reduce life expectancy, increase health care costs, decrease workers’ productivity and lower GDP. While recognising the importance of the alcohol industry in many countries, the report makes a strong economic case for enhancing policies to tackle harmful alcohol consumption.