I've really got to lose some weight. Friends have told me you can shed several stone quite quickly by going on a "totally fruit" diet. Is this true?

All-fruit diets contain very few calories - so they do lead to rapid weight loss. But it would be insane to live on fruit alone for more than a couple of days because you'd be missing out on vital nutrients.

Why not just go down to your local surgery and get a sensible diet sheet from the practice nurse?