Live Long and Starve Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Calorie restrictive diets may extend your lifespan, but eating even half a cheeseburger a day would overstep the caloric limits. ( Flickr user Vanessa Pike Russell (cc: by-nc-nd) ) Produced by PRI and WNYC