The X Factor's star graduates need to go easy on dessert, says Dr John Briffa
The Olympic swimmer doesn't win any golds from Dr John Briffa for her diet
The Oscar-nominated screenwriter and director might be overdoing it on high-carb treats says Dr John Briffa
Chuck Palahniuk, author The Fight Club writer can keep his spinach and canned chilli. But bin the cupcakes and KFC, says Dr John Briffa
John Hurt, actor Blackberries and green tea? Good. Chocolate cake and ice cream? Only in small doses, says Dr John Briffa
Joe Calzaghe, champion boxer Achieving your fighting weight is tough when you love food. Cut out the carbs, advises Dr John Briffa
Marco Pierre White's favourite supper is a ham sandwich, but he should lay off the Nutella, says Dr John Briffa
Albert Roux, chef, 73 A bottle of champagne a day, lashings of cream and cheese. But where are the greens, asks Dr John Briffa
Gok Wan, TV presenter, 34
Irvine Welsh, writer, 50
Adele, popstar, 20