Successful completion of that survey was a key criteria for an April 2011 Rudd Center study on food addiction.

FORBES: Compliant Media Plays Its Role in Activists' War on Food

TLC's latest offerings include "Freaky Eaters, " about people with bizarre eating disorders and food addiction, and "My Strange Addiction, " which features those who battled obsessive behaviors like eating cleanser and sleeping with a blow-dryer.

CNN: Cover story: Extreme TV pushes the limits

Fixing our food system would be similar to weaning ourselves of our addiction to oil, Roberts says.

CNN: As children starve, world struggles for solution