Here s the unusual fat-shredding diet David Haye and Adele swear by joe.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from joe.co.uk Daily Mail and Mail on Sunday newspapers.
Fans of the Sirtfood diet claim you can lose 7 pounds in 7 days. But is it safe and does it actually work? We looked at the research and talked to experts.