The author thanks Alex Mas, Andre Trindade, Andrea Pozzi, Aureo de Paula, Avi Goldfarb, Aviv Nevo, David Rivers, Erich Battistin, Garrett Johnson, Giovanni Mastrobuoni, Greg Veramendi, Isis Durrmeyer, Janet Currie, Jian-Da Zhu, Kim P. Huynh, Kosuke Uetake, Mario Pagliero, Michael Kummer, Toomas Hinnosaar, and seminar participants at the Collegio Carlo Alberto, Duke University, Institute for Fiscal Studies, London School of Economics and Political Science, Royal Holloway, University of Bristol, University of East Anglia, University of Edinburgh, University of Essex, University of Houston, University of Nottingham, University of Pittsburgh, University of Tennessee, Risky Health Behaviors workshop at Hamburg Center for Health Economics, Economics of Health Behaviours and Health Information workshop in London, International Industrial Organization Conference, European Association for Research in Industrial Economics Annual Conference, Jornadas de Economia Industrial, Econometric Society European Winter Meeting, and Dondena Workshop on Public Policy for helpful comments and suggestions. Earlier versions of the paper were titled “How long do healthy habits last? The role of prices.” Researcher(s) own analyses calculated (or derived) based in part on data from Nielsen Consumer LLC and marketing databases provided through the NielsenIQ Datasets at the Kilts Center for Marketing Data Center at The University of Chicago Booth School of Business. The conclusions drawn from the NielsenIQ data are those of the researcher(s) and do not reflect the views of NielsenIQ. NielsenIQ is not responsible for, had no role in, and was not involved in analyzing and preparing the results reported herein.