Cook To Be Thin

Flicking through the TV channels whilst waiting for my new phone not to arrive, I happened upon 'Cook to be Thin' with Gizzi Erskine. Essentially it's a low-fat 'The Delicious Miss Dahl'. 

I don't for one second believe that they are advocating a dangerously unhealthy diet in their programme but isn't the title a bit much? Aren't they really saying Cook to be Underweight? Cook to Be Skin and Bones? Cook Yourself Into a State of Being Medically At Risk of a Number of Unpleasant Conditions? Because that's what thin really means isn't it? 

I'm sure Cook to be Nice and Slim would have sufficed.