This special investigates further the the diets featured in the first series with new, expert comment (including an interview with Madonna's former chef) about what works and what doesn't. The show kicks off with an entertaining look at the key diet fads of recent years - from cabbage soup to Britney Spears's weight loss lolly pops. There are new interviews with nutritionist Kate Cook and fitness expert James Lamper who will argue that an antioxidant rich diet is the best method to a younger healthier body and that they are willing to put their reputations on the line to prove it. So is there an easier answer? In recent years the market has flooded with gadgets and gimmicks designed to slim us down and turn back the clock - but do they really work? The Truth About Beauty Diet and Fitness Special finds out.