TY - JOUR AU - Cutler,David AU - Glaeser,Edward AU - Shapiro,Jesse TI - Why Have Americans Become More Obese? JF - National Bureau of Economic Research Working Paper Series VL - No. 9446 PY - 2003 Y2 - January 2003 UR - http://www.nber.org/papers/w9446 L1 - http://www.nber.org/papers/w9446.pdf N1 - Author contact info: David M. Cutler Department of Economics Harvard University 1875 Cambridge Street Cambridge, MA 02138 Tel: 617/496-5216 Fax: 617/496-8951 E-Mail: dcutler@harvard.edu Edward L. Glaeser Department of Economics 315A Littauer Center Harvard University Cambridge, MA 02138 Tel: 617/495-0575 Fax: 617/495-7730 E-Mail: eglaeser@harvard.edu Jesse M. Shapiro University of Chicago Booth School of Business 5807 S. Woodlawn Avenue Chicago, IL 60637 Tel: 773/834-2688 Fax: 773-753-0563 E-Mail: jmshapir@uchicago.edu AB - Americans have become considerably more obese over the past 25 years. This increase is primarily the result of consuming more calories. The increase in food consumption is itself the result of technological innovations which made it possible for food to be mass prepared far from the point of consumption, and consumed with lower time costs of preparation and cleaning. Price changes are normally beneficial, but may not be if people have self-control problems. This applies to some population. ER -