Dr. David Katz talks about why we're so obese and how to create a healthier food supply. Join the conversation at Big Think.
Big Think: Expert nutritionist Dr. David Katz
The Yale researcher discusses why society has created high-calorie cravings and how to normalize our diets
By Salon Staff
Published August 10, 2009 10:08AM (EDT)
![](https://mediaproxy.salon.com/width/1200/https://media2.salon.com/2009/08/big_think_expert_nutritionist_dr_david_katz.jpg)
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