Exploring the dangers of the current obsession with dieting and the pressure to be thin, TV Presenter Louise Redknapp embarks on a month long experiment to lose her trademark curves and slim down to a US Size Zero, finding out in the process what it really takes and the extreme health risks involved. Beginning with a trip to LA to meet 'Bootcamp Barry,' a military-style diet and fitness guru to Hollywood celebrities, Louise undertakes a punishing diet and fitness regime, closely monitored by a nutritionist who highlights the dangers and side effects of crash dieting as Louise*s health begins to deteriorate. Including interviews with people from all walks of life who have been effected by the 'thinspiration' trend the programme reveals the real effects extreme dieting and exercise have on the body.