Fads in Fad Diets

Over at Jullia Belluz had a post last week showing trends in google searches for different diets from 2005 to 2015.

Scroll through the following graphic.  I knew the gluten-free diet was trendy, but I hadn't appreciated the extent to which it had fully and completely overtaken all the other fad diets.  Back in 2006 and 2007, organic diets seemed to be most popular in many locations, by 2009 it seemed to be gone and replaced by a rise in vegan and gluten-free diets.  We're all gluten free now.  What's next?