• Chicago won’t be following New York City down the path of soft drink prohibition, according to city Mayor Rahm Emanuel. Mayor Emanuel also said he has no plans like those of his Philadelphia counterpart (and Shake Shack aficionado) Michael Nutter to introduce a soda tax. The evidence that soda taxes will effectively reduce obesity doesn’t exist — three studies predicted daily calorie reductions of less than one percent of daily intake— so there’s quite a bit to cheer in the mayor’s announcements.