There once was a time when indoor smoking was allowed in workplaces all across the United States, when trans fats were ubiquitous, and when fast food restaurants didn't have to post calorie information on their menus. That wasn't so long ago, and it's in large part thanks to the pioneering efforts of Tom Frieden, MD, MPH, Health Commissioner of New York City from 2002 to 2009, that these changes were made. Dr. Frieden’s city-wide initiatives during this time included steps to reduce tobacco u...