Kate Quilton investigates the junk-food diets of children who are fussy eaters, visiting one of the largest studies into childhood eating habits in the world to find out what is reasonable to categorise as normal behaviour and when parents should seek help. She learns about a newly discovered eating disorder that has so far been largely undiagnosed and could be behind thousands of cases of fussy eating in the UK.

Kate Quilton exposes the murky world of `miracle" diet supplements and looks at how social media is being used to sell them to teenagers desperate to lose weight. She uncovers the truth behind the science and takes on the big internet corporations making large profits, and meets the mother of a young woman whose death may have been linked to extreme dieting.

Kate Quilton exposes the murky world of `miracle" diet supplements and looks at how social media is being used to sell them to teenagers desperate to lose weight. She uncovers the truth behind the science and takes on the big internet corporations making big profits, and meets the mother of a young woman whose death may have been linked to extreme dieting.

Kate begins by investigating the world of severe food allergies, enlisting the help of a team of sufferers to report undercover at a host of different London eateries to see how they are treated.