The secret to Cate Blanchett’s red carpet ready figure and flawless, porcelain complexion is Nishi Joshi’s detox programme - and good genes of course. Once completed, this former Osteopath’s famous 21-day detox promises to change your metabolism for ever, and help anyone drop a dress size fast. It’s a strict regime though. On the three week non-dairy, wheat free, gluten free diet, alcohol, sugar, caffeine, red meat, potatoes and most fruits except bananas are banned. But as Cate and the rest of Dr Joshi’s long list of A-list followers (half of LA and most of Primrose Hill) prove, a diet of steamed fish, chicken, eggs, grains and mostly raw vegetables really does deliver results. Joshi also prescribes colonic irrigation, acupuncture, reflexology and ayervedic herbal supplements, vitamins and minerals and metabolic detox to curb cravings, enhance the mood, support the kidneys and cleanse the liver.