Should the we follow France's lead and ban pro-anorexia (pro-ana) and pro-bulimia (pro-mia) websites, which promote extreme thinness and methods for self-starvation?

Panorama asks why sites like these exist, what purpose they serve and whether or not they should be censored under the proposed web filter.

Reporters Hayley Crane and Nick Toscano.

Audio: 

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ProANA - SYNcast.mp3