Gillian McKeith, best known as the presenter of Channel 4′s ‘You Are What You Eat’, has reportedly signed up to front another Channel 4 show, Supersize Versus Superskinny.

The show will make obese people swap diets with skinny people and document the effects that these drastic changes cause.

The Mirror newspaper has reported that many professionals in the field have serious concerns about the show, and Dr Ian Campbell, Weight Concern medical adviser, said: “For the sake of entertaining people, this will replace one person’s bad diet with another’s bad diet.”