With relatively cheap, highly refined, very convenient, pre-packed food, fast food and take-aways on every corner, obesity is running rampant. Some experts say we are bang, smack in the middle of a full blown obesity epidemic. It's no wonder then, that every magazine, newspaper, TV channel and yes, even internet site, is full of all sorts of diets. The question that often remains unanswered though is, do they work and even more importantly are they safe?