Dieters attempt the most hyped and written-about diets on the market today - which diets work best?
Dr Xand van Tulleken and Dr Helen Lawal help the public road test more of the most hyped-up diets out there
Summer sandwich diet; sexy pineapple diet... Xand and Helen help people test summer diets.
Series 5 Episode 5 - Summer Special
Dr Xand investigates bottled waters, from 'protein' to 'skinny', and goes on a Keto diet
Series 5 Episode 4 - From the Fruitarian Diet to the Carnivore Diet
Dr Xand finds out whether our hormones can make us fat, and can we burn calories sat down?
Series 5 Episode 3 - From the Midwife's Diet to the Athlete's Diet
Dr Xand investigates if you can offset office-snacking calories by exercising at work
Series 5 Episode 2 - From the Hallelujah to the Weigh Down Diet
The high-fibre Pritikin diet is tested and one designed by Beyonce's personal trainer
Series 5 Episode 1 - From the Pritikin to the Greenprint Diet